/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:21:27,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:21:27,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:21:27,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:21:27,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:21:27,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:21:27,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:21:27,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:21:27,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:21:27,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:21:27,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:21:27,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:21:27,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:21:27,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:21:27,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:21:27,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:21:27,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:21:27,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:21:27,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:21:27,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:21:27,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:21:27,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:21:27,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:21:27,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:21:27,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 13:21:27,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 13:21:27,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 13:21:27,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 13:21:27,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 13:21:27,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 13:21:27,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 13:21:27,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 13:21:27,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 13:21:27,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 13:21:27,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 13:21:27,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 13:21:27,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 13:21:27,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 13:21:27,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:21:27,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:21:27,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:21:27,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 13:21:27,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:21:27,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:21:27,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:21:27,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:21:27,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:21:27,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:21:27,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:21:27,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:21:27,750 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:21:27,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:21:27,750 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:21:27,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:21:27,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:21:27,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:21:27,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:21:27,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:21:27,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:21:27,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:21:27,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:21:27,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:21:27,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:21:27,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:21:27,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:21:27,753 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:21:27,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:21:27,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:21:27,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:21:27,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:21:27,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:21:27,951 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:21:27,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-01-18 13:21:27,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9118da0/bea16cb2c4ac4acca413c805cd8d5377/FLAG5d5b95d82 [2022-01-18 13:21:28,279 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:21:28,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-01-18 13:21:28,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9118da0/bea16cb2c4ac4acca413c805cd8d5377/FLAG5d5b95d82 [2022-01-18 13:21:28,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9118da0/bea16cb2c4ac4acca413c805cd8d5377 [2022-01-18 13:21:28,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:21:28,717 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:21:28,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:21:28,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:21:28,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:21:28,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12353f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28, skipping insertion in model container [2022-01-18 13:21:28,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:21:28,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:21:28,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-01-18 13:21:28,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:21:28,895 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:21:28,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-01-18 13:21:28,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:21:28,922 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:21:28,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28 WrapperNode [2022-01-18 13:21:28,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:21:28,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:21:28,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:21:28,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:21:28,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,955 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-01-18 13:21:28,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:21:28,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:21:28,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:21:28,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:21:28,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:21:28,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:21:28,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:21:28,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:21:28,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (1/1) ... [2022-01-18 13:21:28,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:21:28,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:21:29,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 13:21:29,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 13:21:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 13:21:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 13:21:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 13:21:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 13:21:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 13:21:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 13:21:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:21:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:21:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 13:21:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 13:21:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:21:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:21:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 13:21:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:21:29,044 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 13:21:29,103 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:21:29,104 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:21:29,323 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:21:29,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:21:29,328 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 13:21:29,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:21:29 BoogieIcfgContainer [2022-01-18 13:21:29,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:21:29,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:21:29,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:21:29,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:21:29,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:21:28" (1/3) ... [2022-01-18 13:21:29,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8ab84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:21:29, skipping insertion in model container [2022-01-18 13:21:29,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:21:28" (2/3) ... [2022-01-18 13:21:29,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8ab84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:21:29, skipping insertion in model container [2022-01-18 13:21:29,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:21:29" (3/3) ... [2022-01-18 13:21:29,338 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-01-18 13:21:29,341 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:21:29,341 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:21:29,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 13:21:29,341 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:21:29,379 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,380 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,380 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,380 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,380 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,380 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,381 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,381 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,381 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,381 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,381 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,386 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,387 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,387 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,392 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,392 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,394 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,395 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,396 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,396 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,396 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:21:29,398 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 13:21:29,438 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:21:29,442 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 13:21:29,442 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 13:21:29,454 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-01-18 13:21:29,511 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:29,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:29,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:29,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:29,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:29,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1367960911, now seen corresponding path program 1 times [2022-01-18 13:21:29,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:29,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409574365] [2022-01-18 13:21:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:29,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:29,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:29,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409574365] [2022-01-18 13:21:29,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409574365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:29,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:29,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:21:29,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584286151] [2022-01-18 13:21:29,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:29,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:21:29,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:29,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:21:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:21:29,700 INFO L87 Difference]: Start difference. First operand has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:29,729 INFO L93 Difference]: Finished difference Result 530 states and 1320 transitions. [2022-01-18 13:21:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:21:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:29,762 INFO L225 Difference]: With dead ends: 530 [2022-01-18 13:21:29,762 INFO L226 Difference]: Without dead ends: 528 [2022-01-18 13:21:29,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:21:29,765 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:29,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:21:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-01-18 13:21:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-01-18 13:21:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.5009487666034156) internal successors, (1318), 527 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1318 transitions. [2022-01-18 13:21:29,831 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1318 transitions. Word has length 62 [2022-01-18 13:21:29,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:29,831 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1318 transitions. [2022-01-18 13:21:29,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1318 transitions. [2022-01-18 13:21:29,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:29,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:29,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:29,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 13:21:29,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1425985199, now seen corresponding path program 1 times [2022-01-18 13:21:29,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:29,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112506548] [2022-01-18 13:21:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:29,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:30,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:30,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112506548] [2022-01-18 13:21:30,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112506548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:30,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:30,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:30,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823126934] [2022-01-18 13:21:30,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:30,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:30,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:30,246 INFO L87 Difference]: Start difference. First operand 528 states and 1318 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:30,471 INFO L93 Difference]: Finished difference Result 830 states and 2079 transitions. [2022-01-18 13:21:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:30,475 INFO L225 Difference]: With dead ends: 830 [2022-01-18 13:21:30,475 INFO L226 Difference]: Without dead ends: 764 [2022-01-18 13:21:30,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:21:30,476 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 138 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:30,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 908 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-18 13:21:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 619. [2022-01-18 13:21:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 2.483818770226537) internal successors, (1535), 618 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1535 transitions. [2022-01-18 13:21:30,490 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1535 transitions. Word has length 62 [2022-01-18 13:21:30,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:30,490 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 1535 transitions. [2022-01-18 13:21:30,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1535 transitions. [2022-01-18 13:21:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:30,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:30,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:30,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 13:21:30,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2050221647, now seen corresponding path program 2 times [2022-01-18 13:21:30,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:30,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765092075] [2022-01-18 13:21:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:30,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:30,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:30,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765092075] [2022-01-18 13:21:30,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765092075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:30,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:30,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:30,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847114873] [2022-01-18 13:21:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:30,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:30,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:30,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:30,703 INFO L87 Difference]: Start difference. First operand 619 states and 1535 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:31,023 INFO L93 Difference]: Finished difference Result 738 states and 1846 transitions. [2022-01-18 13:21:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:31,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:31,031 INFO L225 Difference]: With dead ends: 738 [2022-01-18 13:21:31,031 INFO L226 Difference]: Without dead ends: 675 [2022-01-18 13:21:31,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:31,047 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 123 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:31,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 868 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:21:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-01-18 13:21:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 627. [2022-01-18 13:21:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 2.487220447284345) internal successors, (1557), 626 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1557 transitions. [2022-01-18 13:21:31,060 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1557 transitions. Word has length 62 [2022-01-18 13:21:31,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:31,061 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1557 transitions. [2022-01-18 13:21:31,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:31,061 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1557 transitions. [2022-01-18 13:21:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:31,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:31,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:31,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 13:21:31,062 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1996637171, now seen corresponding path program 3 times [2022-01-18 13:21:31,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:31,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646343405] [2022-01-18 13:21:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:31,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:31,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:31,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646343405] [2022-01-18 13:21:31,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646343405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:31,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:31,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:31,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634142505] [2022-01-18 13:21:31,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:31,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:31,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:31,288 INFO L87 Difference]: Start difference. First operand 627 states and 1557 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:32,236 INFO L93 Difference]: Finished difference Result 741 states and 1848 transitions. [2022-01-18 13:21:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:32,236 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:32,239 INFO L225 Difference]: With dead ends: 741 [2022-01-18 13:21:32,239 INFO L226 Difference]: Without dead ends: 671 [2022-01-18 13:21:32,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:32,240 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 126 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:32,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 819 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:21:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-01-18 13:21:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 623. [2022-01-18 13:21:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.485530546623794) internal successors, (1546), 622 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-01-18 13:21:32,278 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-01-18 13:21:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:32,285 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-01-18 13:21:32,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-01-18 13:21:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:32,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:32,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:32,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 13:21:32,288 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:32,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1798753555, now seen corresponding path program 4 times [2022-01-18 13:21:32,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:32,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353139293] [2022-01-18 13:21:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:32,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:33,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:33,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353139293] [2022-01-18 13:21:33,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353139293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:33,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:33,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:33,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746606168] [2022-01-18 13:21:33,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:33,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:33,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:33,486 INFO L87 Difference]: Start difference. First operand 623 states and 1546 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:33,661 INFO L93 Difference]: Finished difference Result 782 states and 1957 transitions. [2022-01-18 13:21:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:33,662 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:33,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:33,664 INFO L225 Difference]: With dead ends: 782 [2022-01-18 13:21:33,664 INFO L226 Difference]: Without dead ends: 716 [2022-01-18 13:21:33,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:33,665 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 132 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:33,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 968 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-01-18 13:21:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 623. [2022-01-18 13:21:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.485530546623794) internal successors, (1546), 622 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-01-18 13:21:33,681 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-01-18 13:21:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:33,681 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-01-18 13:21:33,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-01-18 13:21:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:33,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:33,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:33,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 13:21:33,684 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash -21741301, now seen corresponding path program 5 times [2022-01-18 13:21:33,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:33,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871691305] [2022-01-18 13:21:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:33,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:33,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:33,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871691305] [2022-01-18 13:21:33,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871691305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:33,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:33,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:33,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043405253] [2022-01-18 13:21:33,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:33,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:33,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:33,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:33,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:33,825 INFO L87 Difference]: Start difference. First operand 623 states and 1546 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:34,005 INFO L93 Difference]: Finished difference Result 838 states and 2145 transitions. [2022-01-18 13:21:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:34,005 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:34,008 INFO L225 Difference]: With dead ends: 838 [2022-01-18 13:21:34,008 INFO L226 Difference]: Without dead ends: 775 [2022-01-18 13:21:34,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:21:34,009 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 89 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:34,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 855 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-01-18 13:21:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 643. [2022-01-18 13:21:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5062305295950154) internal successors, (1609), 642 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1609 transitions. [2022-01-18 13:21:34,020 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1609 transitions. Word has length 62 [2022-01-18 13:21:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:34,021 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1609 transitions. [2022-01-18 13:21:34,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1609 transitions. [2022-01-18 13:21:34,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:34,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:34,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:34,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 13:21:34,022 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:34,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash -742951413, now seen corresponding path program 6 times [2022-01-18 13:21:34,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:34,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863560768] [2022-01-18 13:21:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:34,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:34,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:34,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863560768] [2022-01-18 13:21:34,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863560768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:34,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:34,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:34,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686663026] [2022-01-18 13:21:34,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:34,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:34,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:34,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:34,141 INFO L87 Difference]: Start difference. First operand 643 states and 1609 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:34,301 INFO L93 Difference]: Finished difference Result 806 states and 2057 transitions. [2022-01-18 13:21:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:34,301 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:34,304 INFO L225 Difference]: With dead ends: 806 [2022-01-18 13:21:34,304 INFO L226 Difference]: Without dead ends: 743 [2022-01-18 13:21:34,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:21:34,305 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 116 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:34,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 615 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:34,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-01-18 13:21:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-01-18 13:21:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.501547987616099) internal successors, (1616), 646 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-01-18 13:21:34,316 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-01-18 13:21:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:34,316 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-01-18 13:21:34,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-01-18 13:21:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:34,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:34,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:34,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 13:21:34,318 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:34,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1967045189, now seen corresponding path program 7 times [2022-01-18 13:21:34,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:34,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456003476] [2022-01-18 13:21:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:34,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:34,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:34,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456003476] [2022-01-18 13:21:34,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456003476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:34,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:34,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:34,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649757134] [2022-01-18 13:21:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:34,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:34,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:34,434 INFO L87 Difference]: Start difference. First operand 647 states and 1616 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:34,623 INFO L93 Difference]: Finished difference Result 809 states and 2059 transitions. [2022-01-18 13:21:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:34,624 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:34,626 INFO L225 Difference]: With dead ends: 809 [2022-01-18 13:21:34,626 INFO L226 Difference]: Without dead ends: 739 [2022-01-18 13:21:34,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:34,627 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 87 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:34,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 836 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:34,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-01-18 13:21:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 643. [2022-01-18 13:21:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5) internal successors, (1605), 642 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-01-18 13:21:34,638 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-01-18 13:21:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:34,638 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-01-18 13:21:34,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-01-18 13:21:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:34,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:34,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:34,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 13:21:34,640 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:34,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1153891209, now seen corresponding path program 8 times [2022-01-18 13:21:34,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:34,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929736206] [2022-01-18 13:21:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:34,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:34,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:34,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929736206] [2022-01-18 13:21:34,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929736206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:34,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:34,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:34,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549536764] [2022-01-18 13:21:34,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:34,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:34,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:34,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:34,771 INFO L87 Difference]: Start difference. First operand 643 states and 1605 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:35,006 INFO L93 Difference]: Finished difference Result 810 states and 2064 transitions. [2022-01-18 13:21:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:35,008 INFO L225 Difference]: With dead ends: 810 [2022-01-18 13:21:35,009 INFO L226 Difference]: Without dead ends: 747 [2022-01-18 13:21:35,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:21:35,009 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 164 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:35,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 757 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-01-18 13:21:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 651. [2022-01-18 13:21:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 2.503076923076923) internal successors, (1627), 650 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1627 transitions. [2022-01-18 13:21:35,034 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1627 transitions. Word has length 62 [2022-01-18 13:21:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:35,035 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 1627 transitions. [2022-01-18 13:21:35,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1627 transitions. [2022-01-18 13:21:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:35,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:35,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:35,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 13:21:35,036 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:35,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:35,037 INFO L85 PathProgramCache]: Analyzing trace with hash -431079485, now seen corresponding path program 9 times [2022-01-18 13:21:35,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:35,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363830669] [2022-01-18 13:21:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:35,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:35,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:35,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363830669] [2022-01-18 13:21:35,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363830669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:35,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:35,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:35,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801529005] [2022-01-18 13:21:35,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:35,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:35,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:35,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:35,233 INFO L87 Difference]: Start difference. First operand 651 states and 1627 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:35,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:35,756 INFO L93 Difference]: Finished difference Result 813 states and 2066 transitions. [2022-01-18 13:21:35,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:35,757 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:35,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:35,760 INFO L225 Difference]: With dead ends: 813 [2022-01-18 13:21:35,761 INFO L226 Difference]: Without dead ends: 743 [2022-01-18 13:21:35,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:21:35,762 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 95 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:35,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 942 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:21:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-01-18 13:21:35,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-01-18 13:21:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.501547987616099) internal successors, (1616), 646 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-01-18 13:21:35,790 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-01-18 13:21:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:35,790 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-01-18 13:21:35,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-01-18 13:21:35,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:35,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:35,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:35,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 13:21:35,792 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:35,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1717688431, now seen corresponding path program 10 times [2022-01-18 13:21:35,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:35,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597307959] [2022-01-18 13:21:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:35,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:35,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:35,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597307959] [2022-01-18 13:21:35,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597307959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:35,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:35,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:35,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091880330] [2022-01-18 13:21:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:35,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:35,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:35,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:35,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:35,985 INFO L87 Difference]: Start difference. First operand 647 states and 1616 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:36,474 INFO L93 Difference]: Finished difference Result 854 states and 2175 transitions. [2022-01-18 13:21:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:36,475 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:36,478 INFO L225 Difference]: With dead ends: 854 [2022-01-18 13:21:36,478 INFO L226 Difference]: Without dead ends: 788 [2022-01-18 13:21:36,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:21:36,479 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 126 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:36,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 898 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:21:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-01-18 13:21:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 643. [2022-01-18 13:21:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5) internal successors, (1605), 642 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-01-18 13:21:36,502 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-01-18 13:21:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:36,503 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-01-18 13:21:36,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:36,503 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-01-18 13:21:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:36,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:36,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:36,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 13:21:36,504 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:36,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1996739535, now seen corresponding path program 11 times [2022-01-18 13:21:36,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:36,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553580688] [2022-01-18 13:21:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:36,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:36,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:36,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553580688] [2022-01-18 13:21:36,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553580688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:36,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:36,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:36,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143473061] [2022-01-18 13:21:36,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:36,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:36,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:36,664 INFO L87 Difference]: Start difference. First operand 643 states and 1605 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:36,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:36,861 INFO L93 Difference]: Finished difference Result 882 states and 2234 transitions. [2022-01-18 13:21:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:36,862 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:36,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:36,864 INFO L225 Difference]: With dead ends: 882 [2022-01-18 13:21:36,865 INFO L226 Difference]: Without dead ends: 819 [2022-01-18 13:21:36,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:36,865 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 116 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:36,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 945 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-01-18 13:21:36,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 683. [2022-01-18 13:21:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-01-18 13:21:36,886 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-01-18 13:21:36,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:36,886 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-01-18 13:21:36,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-01-18 13:21:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:36,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:36,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:36,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 13:21:36,888 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:36,888 INFO L85 PathProgramCache]: Analyzing trace with hash -931759, now seen corresponding path program 12 times [2022-01-18 13:21:36,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:36,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022168429] [2022-01-18 13:21:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:36,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:37,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:37,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022168429] [2022-01-18 13:21:37,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022168429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:37,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:37,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:37,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673337576] [2022-01-18 13:21:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:37,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:37,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:37,034 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:37,245 INFO L93 Difference]: Finished difference Result 850 states and 2154 transitions. [2022-01-18 13:21:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:37,248 INFO L225 Difference]: With dead ends: 850 [2022-01-18 13:21:37,248 INFO L226 Difference]: Without dead ends: 787 [2022-01-18 13:21:37,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:37,248 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 161 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:37,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 801 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:37,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-01-18 13:21:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 687. [2022-01-18 13:21:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.521865889212828) internal successors, (1730), 686 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1730 transitions. [2022-01-18 13:21:37,260 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1730 transitions. Word has length 62 [2022-01-18 13:21:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:37,260 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1730 transitions. [2022-01-18 13:21:37,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1730 transitions. [2022-01-18 13:21:37,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:37,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:37,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:37,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 13:21:37,261 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:37,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash -722141871, now seen corresponding path program 13 times [2022-01-18 13:21:37,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:37,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927719538] [2022-01-18 13:21:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:37,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:37,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:37,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927719538] [2022-01-18 13:21:37,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927719538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:37,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:37,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:37,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113848166] [2022-01-18 13:21:37,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:37,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:37,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:37,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:37,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:37,463 INFO L87 Difference]: Start difference. First operand 687 states and 1730 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:37,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:37,734 INFO L93 Difference]: Finished difference Result 802 states and 2026 transitions. [2022-01-18 13:21:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:37,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:37,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:37,737 INFO L225 Difference]: With dead ends: 802 [2022-01-18 13:21:37,737 INFO L226 Difference]: Without dead ends: 739 [2022-01-18 13:21:37,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:37,738 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 152 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:37,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 790 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:21:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-01-18 13:21:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 691. [2022-01-18 13:21:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.517391304347826) internal successors, (1737), 690 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1737 transitions. [2022-01-18 13:21:37,748 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1737 transitions. Word has length 62 [2022-01-18 13:21:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:37,749 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1737 transitions. [2022-01-18 13:21:37,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1737 transitions. [2022-01-18 13:21:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:37,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:37,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:37,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 13:21:37,750 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1987854731, now seen corresponding path program 14 times [2022-01-18 13:21:37,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:37,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358772715] [2022-01-18 13:21:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:37,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:37,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:37,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358772715] [2022-01-18 13:21:37,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358772715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:37,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:37,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:37,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38680202] [2022-01-18 13:21:37,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:37,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:37,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:37,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:37,929 INFO L87 Difference]: Start difference. First operand 691 states and 1737 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:38,141 INFO L93 Difference]: Finished difference Result 805 states and 2028 transitions. [2022-01-18 13:21:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:38,141 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:38,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:38,143 INFO L225 Difference]: With dead ends: 805 [2022-01-18 13:21:38,143 INFO L226 Difference]: Without dead ends: 735 [2022-01-18 13:21:38,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:38,144 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 159 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:38,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 767 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:38,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-01-18 13:21:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 683. [2022-01-18 13:21:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-01-18 13:21:38,154 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-01-18 13:21:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:38,155 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-01-18 13:21:38,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-01-18 13:21:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:38,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:38,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:38,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 13:21:38,156 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash -127774901, now seen corresponding path program 15 times [2022-01-18 13:21:38,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:38,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741177548] [2022-01-18 13:21:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:38,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:38,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:38,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741177548] [2022-01-18 13:21:38,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741177548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:38,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:38,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:38,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086475481] [2022-01-18 13:21:38,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:38,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:38,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:38,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:38,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:38,345 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:38,561 INFO L93 Difference]: Finished difference Result 910 states and 2347 transitions. [2022-01-18 13:21:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:38,561 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:38,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:38,564 INFO L225 Difference]: With dead ends: 910 [2022-01-18 13:21:38,564 INFO L226 Difference]: Without dead ends: 847 [2022-01-18 13:21:38,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:21:38,565 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 108 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:38,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 869 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-01-18 13:21:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 691. [2022-01-18 13:21:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.534782608695652) internal successors, (1749), 690 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1749 transitions. [2022-01-18 13:21:38,579 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1749 transitions. Word has length 62 [2022-01-18 13:21:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:38,579 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1749 transitions. [2022-01-18 13:21:38,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:38,579 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1749 transitions. [2022-01-18 13:21:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:38,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:38,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:38,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 13:21:38,581 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:38,582 INFO L85 PathProgramCache]: Analyzing trace with hash -848985013, now seen corresponding path program 16 times [2022-01-18 13:21:38,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:38,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376565059] [2022-01-18 13:21:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:38,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:38,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:38,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376565059] [2022-01-18 13:21:38,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376565059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:38,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:38,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:38,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433213104] [2022-01-18 13:21:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:38,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:38,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:38,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:38,716 INFO L87 Difference]: Start difference. First operand 691 states and 1749 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:38,955 INFO L93 Difference]: Finished difference Result 866 states and 2230 transitions. [2022-01-18 13:21:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:38,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:38,974 INFO L225 Difference]: With dead ends: 866 [2022-01-18 13:21:38,974 INFO L226 Difference]: Without dead ends: 803 [2022-01-18 13:21:38,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:21:38,975 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 137 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:38,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 593 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-01-18 13:21:39,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 695. [2022-01-18 13:21:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.5302593659942363) internal successors, (1756), 694 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-01-18 13:21:39,009 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-01-18 13:21:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:39,009 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-01-18 13:21:39,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-01-18 13:21:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:39,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:39,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:39,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 13:21:39,012 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1861011589, now seen corresponding path program 17 times [2022-01-18 13:21:39,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:39,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553063556] [2022-01-18 13:21:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:39,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:39,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:39,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553063556] [2022-01-18 13:21:39,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553063556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:39,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:39,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:39,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784900670] [2022-01-18 13:21:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:39,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:39,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:39,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:39,235 INFO L87 Difference]: Start difference. First operand 695 states and 1756 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:39,427 INFO L93 Difference]: Finished difference Result 869 states and 2232 transitions. [2022-01-18 13:21:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:39,427 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:39,430 INFO L225 Difference]: With dead ends: 869 [2022-01-18 13:21:39,430 INFO L226 Difference]: Without dead ends: 799 [2022-01-18 13:21:39,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:21:39,431 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 123 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:39,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 721 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-01-18 13:21:39,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 687. [2022-01-18 13:21:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.5276967930029155) internal successors, (1734), 686 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1734 transitions. [2022-01-18 13:21:39,441 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1734 transitions. Word has length 62 [2022-01-18 13:21:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:39,441 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1734 transitions. [2022-01-18 13:21:39,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1734 transitions. [2022-01-18 13:21:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:39,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:39,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:39,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 13:21:39,442 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:39,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:39,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1047857609, now seen corresponding path program 18 times [2022-01-18 13:21:39,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:39,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92060315] [2022-01-18 13:21:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:39,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:39,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92060315] [2022-01-18 13:21:39,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92060315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:39,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:39,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:39,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274893144] [2022-01-18 13:21:39,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:39,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:39,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:39,611 INFO L87 Difference]: Start difference. First operand 687 states and 1734 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:39,849 INFO L93 Difference]: Finished difference Result 850 states and 2182 transitions. [2022-01-18 13:21:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:39,849 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:39,852 INFO L225 Difference]: With dead ends: 850 [2022-01-18 13:21:39,852 INFO L226 Difference]: Without dead ends: 787 [2022-01-18 13:21:39,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:21:39,852 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 137 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:39,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 763 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:21:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-01-18 13:21:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 695. [2022-01-18 13:21:39,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.5302593659942363) internal successors, (1756), 694 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-01-18 13:21:39,862 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-01-18 13:21:39,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:39,862 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-01-18 13:21:39,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-01-18 13:21:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:39,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:39,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:39,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 13:21:39,864 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash -537113085, now seen corresponding path program 19 times [2022-01-18 13:21:39,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:39,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803190504] [2022-01-18 13:21:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:39,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:40,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:40,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803190504] [2022-01-18 13:21:40,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803190504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:40,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:40,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:40,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121270080] [2022-01-18 13:21:40,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:40,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:40,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:40,090 INFO L87 Difference]: Start difference. First operand 695 states and 1756 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:40,413 INFO L93 Difference]: Finished difference Result 853 states and 2184 transitions. [2022-01-18 13:21:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:40,414 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:40,416 INFO L225 Difference]: With dead ends: 853 [2022-01-18 13:21:40,416 INFO L226 Difference]: Without dead ends: 783 [2022-01-18 13:21:40,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:21:40,417 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 106 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:40,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 793 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:21:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-01-18 13:21:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 691. [2022-01-18 13:21:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.528985507246377) internal successors, (1745), 690 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1745 transitions. [2022-01-18 13:21:40,448 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1745 transitions. Word has length 62 [2022-01-18 13:21:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:40,448 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1745 transitions. [2022-01-18 13:21:40,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1745 transitions. [2022-01-18 13:21:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 13:21:40,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:40,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:40,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 13:21:40,449 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:40,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1823722031, now seen corresponding path program 20 times [2022-01-18 13:21:40,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:40,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731455075] [2022-01-18 13:21:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:40,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:40,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:40,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731455075] [2022-01-18 13:21:40,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731455075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:40,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:40,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 13:21:40,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615037770] [2022-01-18 13:21:40,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:40,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 13:21:40,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:40,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 13:21:40,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:21:40,647 INFO L87 Difference]: Start difference. First operand 691 states and 1745 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:40,854 INFO L93 Difference]: Finished difference Result 894 states and 2293 transitions. [2022-01-18 13:21:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 13:21:40,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 13:21:40,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:40,857 INFO L225 Difference]: With dead ends: 894 [2022-01-18 13:21:40,857 INFO L226 Difference]: Without dead ends: 828 [2022-01-18 13:21:40,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:21:40,858 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 130 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:40,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 968 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-01-18 13:21:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 683. [2022-01-18 13:21:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-01-18 13:21:40,869 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-01-18 13:21:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:40,869 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-01-18 13:21:40,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,869 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-01-18 13:21:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:40,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:40,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:40,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 13:21:40,870 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1062789427, now seen corresponding path program 1 times [2022-01-18 13:21:40,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:40,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301641175] [2022-01-18 13:21:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:40,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:40,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:40,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301641175] [2022-01-18 13:21:40,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301641175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:40,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:40,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:40,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990740994] [2022-01-18 13:21:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:40,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:40,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:40,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:40,895 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:40,965 INFO L93 Difference]: Finished difference Result 987 states and 2483 transitions. [2022-01-18 13:21:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 13:21:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:40,969 INFO L225 Difference]: With dead ends: 987 [2022-01-18 13:21:40,969 INFO L226 Difference]: Without dead ends: 906 [2022-01-18 13:21:40,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 13:21:40,971 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 99 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:40,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 330 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-01-18 13:21:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 621. [2022-01-18 13:21:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.5274193548387096) internal successors, (1567), 620 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-01-18 13:21:40,984 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-01-18 13:21:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:40,985 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-01-18 13:21:40,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-01-18 13:21:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:40,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:40,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:40,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 13:21:40,987 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash -80553619, now seen corresponding path program 1 times [2022-01-18 13:21:40,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:40,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436331705] [2022-01-18 13:21:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:40,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:41,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:41,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436331705] [2022-01-18 13:21:41,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436331705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:41,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:41,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:41,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480945219] [2022-01-18 13:21:41,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:41,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:41,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:41,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:41,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:41,029 INFO L87 Difference]: Start difference. First operand 621 states and 1567 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:41,097 INFO L93 Difference]: Finished difference Result 949 states and 2424 transitions. [2022-01-18 13:21:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:21:41,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:41,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:41,115 INFO L225 Difference]: With dead ends: 949 [2022-01-18 13:21:41,115 INFO L226 Difference]: Without dead ends: 949 [2022-01-18 13:21:41,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:41,115 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 128 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:41,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 334 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:21:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-01-18 13:21:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 637. [2022-01-18 13:21:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.539308176100629) internal successors, (1615), 636 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1615 transitions. [2022-01-18 13:21:41,125 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1615 transitions. Word has length 66 [2022-01-18 13:21:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:41,126 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1615 transitions. [2022-01-18 13:21:41,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,126 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1615 transitions. [2022-01-18 13:21:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:41,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:41,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:41,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 13:21:41,151 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:41,152 INFO L85 PathProgramCache]: Analyzing trace with hash 626763185, now seen corresponding path program 2 times [2022-01-18 13:21:41,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:41,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159169585] [2022-01-18 13:21:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:41,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:41,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:41,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159169585] [2022-01-18 13:21:41,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159169585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:41,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:41,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:41,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69078785] [2022-01-18 13:21:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:41,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:41,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:41,173 INFO L87 Difference]: Start difference. First operand 637 states and 1615 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:41,243 INFO L93 Difference]: Finished difference Result 1128 states and 2881 transitions. [2022-01-18 13:21:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:21:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:41,246 INFO L225 Difference]: With dead ends: 1128 [2022-01-18 13:21:41,246 INFO L226 Difference]: Without dead ends: 1112 [2022-01-18 13:21:41,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:41,247 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 133 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:41,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 317 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:21:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-01-18 13:21:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 641. [2022-01-18 13:21:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.546875) internal successors, (1630), 640 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1630 transitions. [2022-01-18 13:21:41,267 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1630 transitions. Word has length 66 [2022-01-18 13:21:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:41,268 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1630 transitions. [2022-01-18 13:21:41,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1630 transitions. [2022-01-18 13:21:41,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:41,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:41,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:41,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 13:21:41,269 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:41,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:41,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1732914939, now seen corresponding path program 2 times [2022-01-18 13:21:41,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:41,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871432798] [2022-01-18 13:21:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:41,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:41,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:41,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871432798] [2022-01-18 13:21:41,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871432798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:41,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:41,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:41,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97422516] [2022-01-18 13:21:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:41,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:41,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:41,300 INFO L87 Difference]: Start difference. First operand 641 states and 1630 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:41,411 INFO L93 Difference]: Finished difference Result 1299 states and 3298 transitions. [2022-01-18 13:21:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:21:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:41,413 INFO L225 Difference]: With dead ends: 1299 [2022-01-18 13:21:41,413 INFO L226 Difference]: Without dead ends: 1299 [2022-01-18 13:21:41,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:41,414 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 146 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:41,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 356 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-01-18 13:21:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 657. [2022-01-18 13:21:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.557926829268293) internal successors, (1678), 656 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1678 transitions. [2022-01-18 13:21:41,427 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1678 transitions. Word has length 66 [2022-01-18 13:21:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:41,427 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1678 transitions. [2022-01-18 13:21:41,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,427 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1678 transitions. [2022-01-18 13:21:41,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:41,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:41,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:41,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 13:21:41,429 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:41,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:41,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2046949573, now seen corresponding path program 3 times [2022-01-18 13:21:41,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:41,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324217231] [2022-01-18 13:21:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:41,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:41,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:41,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324217231] [2022-01-18 13:21:41,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324217231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:41,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:41,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:41,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296397978] [2022-01-18 13:21:41,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:41,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:41,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:41,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:41,465 INFO L87 Difference]: Start difference. First operand 657 states and 1678 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:41,555 INFO L93 Difference]: Finished difference Result 1084 states and 2770 transitions. [2022-01-18 13:21:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:21:41,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:41,558 INFO L225 Difference]: With dead ends: 1084 [2022-01-18 13:21:41,558 INFO L226 Difference]: Without dead ends: 1065 [2022-01-18 13:21:41,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:41,558 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 104 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:41,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 321 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-01-18 13:21:41,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 657. [2022-01-18 13:21:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.551829268292683) internal successors, (1674), 656 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-01-18 13:21:41,587 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-01-18 13:21:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:41,587 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-01-18 13:21:41,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-01-18 13:21:41,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:41,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:41,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:41,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 13:21:41,588 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:41,613 INFO L85 PathProgramCache]: Analyzing trace with hash 236497677, now seen corresponding path program 3 times [2022-01-18 13:21:41,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:41,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265977118] [2022-01-18 13:21:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:41,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:41,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:41,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265977118] [2022-01-18 13:21:41,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265977118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:41,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:41,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:41,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128945371] [2022-01-18 13:21:41,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:41,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:41,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:41,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:41,655 INFO L87 Difference]: Start difference. First operand 657 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:41,747 INFO L93 Difference]: Finished difference Result 1112 states and 2849 transitions. [2022-01-18 13:21:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:21:41,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:41,750 INFO L225 Difference]: With dead ends: 1112 [2022-01-18 13:21:41,750 INFO L226 Difference]: Without dead ends: 1112 [2022-01-18 13:21:41,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:41,752 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 96 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:41,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 338 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-01-18 13:21:41,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 657. [2022-01-18 13:21:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.551829268292683) internal successors, (1674), 656 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-01-18 13:21:41,781 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-01-18 13:21:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:41,781 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-01-18 13:21:41,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-01-18 13:21:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:41,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:41,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:41,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 13:21:41,783 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash -228837771, now seen corresponding path program 4 times [2022-01-18 13:21:41,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:41,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482927608] [2022-01-18 13:21:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:41,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:41,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:41,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482927608] [2022-01-18 13:21:41,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482927608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:41,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:41,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:41,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593369777] [2022-01-18 13:21:41,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:41,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:41,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:41,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:41,825 INFO L87 Difference]: Start difference. First operand 657 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:41,897 INFO L93 Difference]: Finished difference Result 967 states and 2471 transitions. [2022-01-18 13:21:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 13:21:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:41,899 INFO L225 Difference]: With dead ends: 967 [2022-01-18 13:21:41,899 INFO L226 Difference]: Without dead ends: 919 [2022-01-18 13:21:41,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 13:21:41,900 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 102 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:41,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 308 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-01-18 13:21:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 625. [2022-01-18 13:21:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5416666666666665) internal successors, (1586), 624 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-01-18 13:21:41,910 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-01-18 13:21:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:41,911 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-01-18 13:21:41,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-01-18 13:21:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:41,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:41,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:41,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 13:21:41,912 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:41,912 INFO L85 PathProgramCache]: Analyzing trace with hash -583910423, now seen corresponding path program 4 times [2022-01-18 13:21:41,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:41,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246902152] [2022-01-18 13:21:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:41,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:41,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246902152] [2022-01-18 13:21:41,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246902152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:41,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:41,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:41,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813033513] [2022-01-18 13:21:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:41,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:41,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:41,935 INFO L87 Difference]: Start difference. First operand 625 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:42,004 INFO L93 Difference]: Finished difference Result 959 states and 2469 transitions. [2022-01-18 13:21:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:21:42,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:42,006 INFO L225 Difference]: With dead ends: 959 [2022-01-18 13:21:42,007 INFO L226 Difference]: Without dead ends: 959 [2022-01-18 13:21:42,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:42,020 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 111 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:42,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 342 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:21:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-01-18 13:21:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 625. [2022-01-18 13:21:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5416666666666665) internal successors, (1586), 624 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-01-18 13:21:42,031 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-01-18 13:21:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:42,031 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-01-18 13:21:42,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-01-18 13:21:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:42,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:42,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:42,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 13:21:42,033 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1624806385, now seen corresponding path program 5 times [2022-01-18 13:21:42,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:42,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742900444] [2022-01-18 13:21:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:42,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:42,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:42,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742900444] [2022-01-18 13:21:42,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742900444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:42,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:42,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:42,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925479517] [2022-01-18 13:21:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:42,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:42,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:42,065 INFO L87 Difference]: Start difference. First operand 625 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:42,220 INFO L93 Difference]: Finished difference Result 1086 states and 2779 transitions. [2022-01-18 13:21:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:21:42,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:42,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:42,222 INFO L225 Difference]: With dead ends: 1086 [2022-01-18 13:21:42,222 INFO L226 Difference]: Without dead ends: 1070 [2022-01-18 13:21:42,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:42,223 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 116 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:42,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 311 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-01-18 13:21:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 625. [2022-01-18 13:21:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.53525641025641) internal successors, (1582), 624 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-01-18 13:21:42,232 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-01-18 13:21:42,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:42,232 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-01-18 13:21:42,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-01-18 13:21:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:42,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:42,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:42,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 13:21:42,234 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:42,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:42,234 INFO L85 PathProgramCache]: Analyzing trace with hash -734871739, now seen corresponding path program 5 times [2022-01-18 13:21:42,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:42,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482261679] [2022-01-18 13:21:42,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:42,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:42,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:42,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482261679] [2022-01-18 13:21:42,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482261679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:42,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:42,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:42,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687208154] [2022-01-18 13:21:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:42,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:42,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:42,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:42,274 INFO L87 Difference]: Start difference. First operand 625 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:42,350 INFO L93 Difference]: Finished difference Result 1257 states and 3196 transitions. [2022-01-18 13:21:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:21:42,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:42,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:42,353 INFO L225 Difference]: With dead ends: 1257 [2022-01-18 13:21:42,353 INFO L226 Difference]: Without dead ends: 1257 [2022-01-18 13:21:42,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:42,354 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 132 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:42,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 333 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:21:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-01-18 13:21:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 625. [2022-01-18 13:21:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.53525641025641) internal successors, (1582), 624 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-01-18 13:21:42,364 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-01-18 13:21:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:42,364 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-01-18 13:21:42,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-01-18 13:21:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:42,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:42,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:42,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 13:21:42,366 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1249974523, now seen corresponding path program 6 times [2022-01-18 13:21:42,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:42,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173987990] [2022-01-18 13:21:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:42,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:42,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:42,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173987990] [2022-01-18 13:21:42,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173987990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:42,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:42,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:42,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511783298] [2022-01-18 13:21:42,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:42,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:42,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:42,389 INFO L87 Difference]: Start difference. First operand 625 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:42,460 INFO L93 Difference]: Finished difference Result 1018 states and 2598 transitions. [2022-01-18 13:21:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:21:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:42,463 INFO L225 Difference]: With dead ends: 1018 [2022-01-18 13:21:42,464 INFO L226 Difference]: Without dead ends: 999 [2022-01-18 13:21:42,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:42,465 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 124 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:42,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 302 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:21:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-01-18 13:21:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 625. [2022-01-18 13:21:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5288461538461537) internal successors, (1578), 624 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1578 transitions. [2022-01-18 13:21:42,476 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1578 transitions. Word has length 66 [2022-01-18 13:21:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:42,476 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1578 transitions. [2022-01-18 13:21:42,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1578 transitions. [2022-01-18 13:21:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-18 13:21:42,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:42,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:42,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 13:21:42,477 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:42,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1234540877, now seen corresponding path program 6 times [2022-01-18 13:21:42,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:42,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738934954] [2022-01-18 13:21:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:42,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:42,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:42,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738934954] [2022-01-18 13:21:42,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738934954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:21:42,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:21:42,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:21:42,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698667788] [2022-01-18 13:21:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:21:42,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:21:42,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:42,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:21:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:21:42,496 INFO L87 Difference]: Start difference. First operand 625 states and 1578 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:42,559 INFO L93 Difference]: Finished difference Result 862 states and 2198 transitions. [2022-01-18 13:21:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:21:42,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-18 13:21:42,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:42,561 INFO L225 Difference]: With dead ends: 862 [2022-01-18 13:21:42,561 INFO L226 Difference]: Without dead ends: 862 [2022-01-18 13:21:42,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:21:42,561 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 87 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:42,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 312 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:21:42,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-01-18 13:21:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 621. [2022-01-18 13:21:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.5274193548387096) internal successors, (1567), 620 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-01-18 13:21:42,570 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-01-18 13:21:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:42,570 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-01-18 13:21:42,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-01-18 13:21:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:21:42,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:42,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:42,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 13:21:42,572 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:42,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1550680847, now seen corresponding path program 1 times [2022-01-18 13:21:42,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:42,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981438580] [2022-01-18 13:21:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:42,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:42,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:42,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981438580] [2022-01-18 13:21:42,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981438580] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:21:42,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233547405] [2022-01-18 13:21:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:42,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:21:42,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:21:42,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:21:42,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 13:21:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:42,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:21:42,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:21:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:43,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:21:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:44,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233547405] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:21:44,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:21:44,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:21:44,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468792201] [2022-01-18 13:21:44,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:21:44,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:21:44,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:21:44,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:21:44,514 INFO L87 Difference]: Start difference. First operand 621 states and 1567 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:45,881 INFO L93 Difference]: Finished difference Result 1332 states and 3500 transitions. [2022-01-18 13:21:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:21:45,881 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:21:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:45,883 INFO L225 Difference]: With dead ends: 1332 [2022-01-18 13:21:45,883 INFO L226 Difference]: Without dead ends: 1257 [2022-01-18 13:21:45,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 13:21:45,885 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 545 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:45,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 2215 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:21:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-01-18 13:21:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 809. [2022-01-18 13:21:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.573019801980198) internal successors, (2079), 808 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2079 transitions. [2022-01-18 13:21:45,898 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2079 transitions. Word has length 70 [2022-01-18 13:21:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:45,898 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2079 transitions. [2022-01-18 13:21:45,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2079 transitions. [2022-01-18 13:21:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:21:45,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:45,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:45,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 13:21:46,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 13:21:46,115 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1707982699, now seen corresponding path program 2 times [2022-01-18 13:21:46,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:46,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791779894] [2022-01-18 13:21:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:46,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:46,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:46,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791779894] [2022-01-18 13:21:46,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791779894] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:21:46,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583540210] [2022-01-18 13:21:46,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:21:46,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:21:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:21:46,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:21:46,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 13:21:46,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:21:46,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:21:46,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:21:46,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:21:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:46,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:21:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:47,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583540210] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:21:47,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:21:47,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:21:47,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208708993] [2022-01-18 13:21:47,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:21:47,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:21:47,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:47,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:21:47,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:21:47,400 INFO L87 Difference]: Start difference. First operand 809 states and 2079 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:49,591 INFO L93 Difference]: Finished difference Result 1555 states and 4131 transitions. [2022-01-18 13:21:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 13:21:49,591 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:21:49,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:49,594 INFO L225 Difference]: With dead ends: 1555 [2022-01-18 13:21:49,594 INFO L226 Difference]: Without dead ends: 1480 [2022-01-18 13:21:49,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1151, Invalid=7039, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 13:21:49,596 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 574 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:49,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2938 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:21:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-01-18 13:21:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 837. [2022-01-18 13:21:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.588516746411483) internal successors, (2164), 836 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2164 transitions. [2022-01-18 13:21:49,608 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2164 transitions. Word has length 70 [2022-01-18 13:21:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:49,608 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2164 transitions. [2022-01-18 13:21:49,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2164 transitions. [2022-01-18 13:21:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:21:49,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:49,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:49,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 13:21:49,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 13:21:49,826 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:49,826 INFO L85 PathProgramCache]: Analyzing trace with hash -4106897, now seen corresponding path program 3 times [2022-01-18 13:21:49,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:49,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046389600] [2022-01-18 13:21:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:49,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:49,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:49,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046389600] [2022-01-18 13:21:49,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046389600] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:21:49,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007949708] [2022-01-18 13:21:49,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:21:49,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:21:49,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:21:49,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:21:49,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 13:21:50,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:21:50,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:21:50,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:21:50,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:21:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:50,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:21:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:50,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007949708] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:21:50,896 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:21:50,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:21:50,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527737271] [2022-01-18 13:21:50,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:21:50,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:21:50,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:50,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:21:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:21:50,897 INFO L87 Difference]: Start difference. First operand 837 states and 2164 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:52,633 INFO L93 Difference]: Finished difference Result 1564 states and 4070 transitions. [2022-01-18 13:21:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 13:21:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:21:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:52,636 INFO L225 Difference]: With dead ends: 1564 [2022-01-18 13:21:52,636 INFO L226 Difference]: Without dead ends: 1438 [2022-01-18 13:21:52,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=915, Invalid=5727, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 13:21:52,638 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 529 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:52,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2432 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:21:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-01-18 13:21:52,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 849. [2022-01-18 13:21:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.5908018867924527) internal successors, (2197), 848 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:52,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2197 transitions. [2022-01-18 13:21:52,654 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2197 transitions. Word has length 70 [2022-01-18 13:21:52,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:52,654 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2197 transitions. [2022-01-18 13:21:52,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2197 transitions. [2022-01-18 13:21:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:21:52,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:52,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:52,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-18 13:21:52,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:21:52,871 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1589077591, now seen corresponding path program 4 times [2022-01-18 13:21:52,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:52,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067526007] [2022-01-18 13:21:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:52,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:52,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:52,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067526007] [2022-01-18 13:21:52,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067526007] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:21:52,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761243332] [2022-01-18 13:21:52,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:21:52,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:21:52,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:21:52,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:21:52,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 13:21:53,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:21:53,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:21:53,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 13:21:53,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:21:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:53,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:21:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:53,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761243332] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:21:53,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:21:53,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-01-18 13:21:53,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581276625] [2022-01-18 13:21:53,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:21:53,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 13:21:53,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:53,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 13:21:53,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:21:53,687 INFO L87 Difference]: Start difference. First operand 849 states and 2197 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:54,881 INFO L93 Difference]: Finished difference Result 1357 states and 3523 transitions. [2022-01-18 13:21:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:21:54,881 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:21:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:54,884 INFO L225 Difference]: With dead ends: 1357 [2022-01-18 13:21:54,884 INFO L226 Difference]: Without dead ends: 1287 [2022-01-18 13:21:54,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=829, Invalid=4573, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 13:21:54,885 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 453 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:54,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 2196 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:21:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-01-18 13:21:54,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 929. [2022-01-18 13:21:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 2.6088362068965516) internal successors, (2421), 928 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 2421 transitions. [2022-01-18 13:21:54,929 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 2421 transitions. Word has length 70 [2022-01-18 13:21:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:54,930 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 2421 transitions. [2022-01-18 13:21:54,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 2421 transitions. [2022-01-18 13:21:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:21:54,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:54,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:54,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 13:21:55,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 13:21:55,150 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:55,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:55,150 INFO L85 PathProgramCache]: Analyzing trace with hash 742294319, now seen corresponding path program 5 times [2022-01-18 13:21:55,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:55,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059072626] [2022-01-18 13:21:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:55,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:55,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059072626] [2022-01-18 13:21:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059072626] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:21:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449029611] [2022-01-18 13:21:55,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:21:55,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:21:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:21:55,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:21:55,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 13:21:55,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:21:55,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:21:55,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:21:55,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:21:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:55,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:21:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:56,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449029611] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:21:56,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:21:56,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:21:56,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734175291] [2022-01-18 13:21:56,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:21:56,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:21:56,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:56,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:21:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:21:56,044 INFO L87 Difference]: Start difference. First operand 929 states and 2421 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:57,293 INFO L93 Difference]: Finished difference Result 1578 states and 4174 transitions. [2022-01-18 13:21:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 13:21:57,294 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:21:57,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:57,308 INFO L225 Difference]: With dead ends: 1578 [2022-01-18 13:21:57,309 INFO L226 Difference]: Without dead ends: 1515 [2022-01-18 13:21:57,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 13:21:57,311 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 600 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:57,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 3208 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:21:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-01-18 13:21:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 993. [2022-01-18 13:21:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 2.6461693548387095) internal successors, (2625), 992 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2625 transitions. [2022-01-18 13:21:57,335 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2625 transitions. Word has length 70 [2022-01-18 13:21:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:57,335 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 2625 transitions. [2022-01-18 13:21:57,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2625 transitions. [2022-01-18 13:21:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:21:57,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:57,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:57,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 13:21:57,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 13:21:57,552 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:57,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:57,552 INFO L85 PathProgramCache]: Analyzing trace with hash -969795277, now seen corresponding path program 6 times [2022-01-18 13:21:57,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:57,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141922130] [2022-01-18 13:21:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:57,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:57,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:57,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141922130] [2022-01-18 13:21:57,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141922130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:21:57,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201847333] [2022-01-18 13:21:57,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:21:57,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:21:57,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:21:57,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:21:57,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 13:21:57,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:21:57,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:21:57,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:21:57,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:21:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:58,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:21:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:58,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201847333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:21:58,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:21:58,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:21:58,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397941323] [2022-01-18 13:21:58,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:21:58,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:21:58,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:21:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:21:58,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:21:58,493 INFO L87 Difference]: Start difference. First operand 993 states and 2625 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:21:59,582 INFO L93 Difference]: Finished difference Result 1377 states and 3662 transitions. [2022-01-18 13:21:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 13:21:59,582 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:21:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:21:59,585 INFO L225 Difference]: With dead ends: 1377 [2022-01-18 13:21:59,585 INFO L226 Difference]: Without dead ends: 1310 [2022-01-18 13:21:59,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1039, Invalid=4967, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 13:21:59,587 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 580 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:21:59,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 2772 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:21:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-01-18 13:21:59,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 977. [2022-01-18 13:21:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 2.6403688524590163) internal successors, (2577), 976 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2577 transitions. [2022-01-18 13:21:59,605 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2577 transitions. Word has length 70 [2022-01-18 13:21:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:21:59,605 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 2577 transitions. [2022-01-18 13:21:59,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:21:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2577 transitions. [2022-01-18 13:21:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:21:59,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:21:59,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:21:59,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 13:21:59,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 13:21:59,829 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:21:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:21:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1740201325, now seen corresponding path program 7 times [2022-01-18 13:21:59,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:21:59,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974164261] [2022-01-18 13:21:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:21:59,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:21:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:21:59,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:21:59,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974164261] [2022-01-18 13:21:59,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974164261] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:21:59,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577627456] [2022-01-18 13:21:59,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:21:59,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:21:59,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:21:59,940 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:21:59,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 13:21:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:21:59,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:21:59,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:00,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:00,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577627456] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:00,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:00,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:00,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835133821] [2022-01-18 13:22:00,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:00,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:00,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:00,932 INFO L87 Difference]: Start difference. First operand 977 states and 2577 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:03,893 INFO L93 Difference]: Finished difference Result 2171 states and 5825 transitions. [2022-01-18 13:22:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 13:22:03,894 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:03,897 INFO L225 Difference]: With dead ends: 2171 [2022-01-18 13:22:03,897 INFO L226 Difference]: Without dead ends: 2031 [2022-01-18 13:22:03,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3871 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1718, Invalid=9838, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 13:22:03,907 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 729 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:03,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 2833 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:22:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2022-01-18 13:22:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1013. [2022-01-18 13:22:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 2.66403162055336) internal successors, (2696), 1012 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2696 transitions. [2022-01-18 13:22:03,945 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2696 transitions. Word has length 70 [2022-01-18 13:22:03,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:03,945 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2696 transitions. [2022-01-18 13:22:03,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2696 transitions. [2022-01-18 13:22:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:03,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:03,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:03,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:04,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:04,184 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1996119831, now seen corresponding path program 8 times [2022-01-18 13:22:04,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:04,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828387830] [2022-01-18 13:22:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:04,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:04,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:04,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828387830] [2022-01-18 13:22:04,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828387830] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:04,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367986466] [2022-01-18 13:22:04,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:22:04,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:04,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:04,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:04,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 13:22:04,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:22:04,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:04,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:04,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:04,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:05,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367986466] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:05,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:05,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:05,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490048507] [2022-01-18 13:22:05,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:05,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:05,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:05,398 INFO L87 Difference]: Start difference. First operand 1013 states and 2696 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:08,164 INFO L93 Difference]: Finished difference Result 2201 states and 5933 transitions. [2022-01-18 13:22:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 13:22:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:08,167 INFO L225 Difference]: With dead ends: 2201 [2022-01-18 13:22:08,167 INFO L226 Difference]: Without dead ends: 2075 [2022-01-18 13:22:08,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3645 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1631, Invalid=9499, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 13:22:08,168 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 786 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:08,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 2456 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:22:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-01-18 13:22:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1065. [2022-01-18 13:22:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.6907894736842106) internal successors, (2863), 1064 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2863 transitions. [2022-01-18 13:22:08,184 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2863 transitions. Word has length 70 [2022-01-18 13:22:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:08,184 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2863 transitions. [2022-01-18 13:22:08,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2863 transitions. [2022-01-18 13:22:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:08,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:08,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:08,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:08,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-01-18 13:22:08,399 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:08,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:08,400 INFO L85 PathProgramCache]: Analyzing trace with hash 713876771, now seen corresponding path program 9 times [2022-01-18 13:22:08,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:08,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888782826] [2022-01-18 13:22:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:08,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:08,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:08,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888782826] [2022-01-18 13:22:08,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888782826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:08,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949898871] [2022-01-18 13:22:08,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:22:08,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:08,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:08,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:08,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 13:22:08,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:22:08,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:08,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:08,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:08,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:09,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949898871] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:09,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:09,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:09,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679367930] [2022-01-18 13:22:09,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:09,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:09,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:09,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:09,258 INFO L87 Difference]: Start difference. First operand 1065 states and 2863 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:12,070 INFO L93 Difference]: Finished difference Result 2153 states and 5838 transitions. [2022-01-18 13:22:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 13:22:12,070 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:12,073 INFO L225 Difference]: With dead ends: 2153 [2022-01-18 13:22:12,073 INFO L226 Difference]: Without dead ends: 2013 [2022-01-18 13:22:12,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1653, Invalid=9689, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 13:22:12,074 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 667 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:12,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 2598 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:22:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-01-18 13:22:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1065. [2022-01-18 13:22:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.68703007518797) internal successors, (2859), 1064 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2859 transitions. [2022-01-18 13:22:12,088 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2859 transitions. Word has length 70 [2022-01-18 13:22:12,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:12,088 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2859 transitions. [2022-01-18 13:22:12,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2859 transitions. [2022-01-18 13:22:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:12,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:12,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:12,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:12,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:12,305 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash -572732175, now seen corresponding path program 10 times [2022-01-18 13:22:12,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:12,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315439726] [2022-01-18 13:22:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:12,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:12,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:12,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315439726] [2022-01-18 13:22:12,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315439726] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:12,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489828840] [2022-01-18 13:22:12,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:22:12,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:12,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:12,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:12,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 13:22:12,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:22:12,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:12,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 13:22:12,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:12,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:13,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489828840] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:13,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:13,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-01-18 13:22:13,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298599755] [2022-01-18 13:22:13,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:13,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 13:22:13,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 13:22:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:22:13,210 INFO L87 Difference]: Start difference. First operand 1065 states and 2859 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:15,602 INFO L93 Difference]: Finished difference Result 2793 states and 7571 transitions. [2022-01-18 13:22:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 13:22:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:15,606 INFO L225 Difference]: With dead ends: 2793 [2022-01-18 13:22:15,606 INFO L226 Difference]: Without dead ends: 2661 [2022-01-18 13:22:15,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1760, Invalid=10672, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 13:22:15,608 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 946 mSDsluCounter, 3524 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:15,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3536 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:22:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2022-01-18 13:22:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 1416. [2022-01-18 13:22:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 2.8141342756183745) internal successors, (3982), 1415 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3982 transitions. [2022-01-18 13:22:15,628 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3982 transitions. Word has length 70 [2022-01-18 13:22:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:15,629 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 3982 transitions. [2022-01-18 13:22:15,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3982 transitions. [2022-01-18 13:22:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:15,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:15,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:15,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:15,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 13:22:15,847 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash -340166747, now seen corresponding path program 11 times [2022-01-18 13:22:15,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:15,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312280459] [2022-01-18 13:22:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:15,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:15,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:15,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312280459] [2022-01-18 13:22:15,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312280459] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:15,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006985722] [2022-01-18 13:22:15,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:22:15,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:15,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:15,974 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:15,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 13:22:16,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:22:16,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:16,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:16,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:16,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:16,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006985722] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:16,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:16,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:16,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847660773] [2022-01-18 13:22:16,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:16,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:16,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:16,746 INFO L87 Difference]: Start difference. First operand 1416 states and 3982 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:18,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:18,944 INFO L93 Difference]: Finished difference Result 2895 states and 8029 transitions. [2022-01-18 13:22:18,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 13:22:18,945 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:18,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:18,948 INFO L225 Difference]: With dead ends: 2895 [2022-01-18 13:22:18,948 INFO L226 Difference]: Without dead ends: 2769 [2022-01-18 13:22:18,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1033, Invalid=7157, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 13:22:18,949 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 593 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:18,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 2755 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:22:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-18 13:22:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1444. [2022-01-18 13:22:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 2.8184338184338182) internal successors, (4067), 1443 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4067 transitions. [2022-01-18 13:22:18,969 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4067 transitions. Word has length 70 [2022-01-18 13:22:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:18,969 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 4067 transitions. [2022-01-18 13:22:18,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4067 transitions. [2022-01-18 13:22:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:18,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:18,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:18,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:19,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-18 13:22:19,187 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1925137441, now seen corresponding path program 12 times [2022-01-18 13:22:19,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:19,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574055743] [2022-01-18 13:22:19,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:19,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:19,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:19,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574055743] [2022-01-18 13:22:19,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574055743] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:19,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064527154] [2022-01-18 13:22:19,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:22:19,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:19,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:19,328 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:19,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 13:22:19,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:22:19,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:19,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:19,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:19,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:20,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064527154] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:20,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:20,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:20,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925521669] [2022-01-18 13:22:20,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:20,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:20,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:20,089 INFO L87 Difference]: Start difference. First operand 1444 states and 4067 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:22,200 INFO L93 Difference]: Finished difference Result 2847 states and 7934 transitions. [2022-01-18 13:22:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 13:22:22,212 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:22,216 INFO L225 Difference]: With dead ends: 2847 [2022-01-18 13:22:22,216 INFO L226 Difference]: Without dead ends: 2707 [2022-01-18 13:22:22,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1060, Invalid=7312, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 13:22:22,217 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 487 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:22,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 2533 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:22:22,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2022-01-18 13:22:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1436. [2022-01-18 13:22:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 2.81602787456446) internal successors, (4041), 1435 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4041 transitions. [2022-01-18 13:22:22,239 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4041 transitions. Word has length 70 [2022-01-18 13:22:22,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:22,240 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4041 transitions. [2022-01-18 13:22:22,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4041 transitions. [2022-01-18 13:22:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:22,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:22,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:22,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:22,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-18 13:22:22,455 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1083220909, now seen corresponding path program 13 times [2022-01-18 13:22:22,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:22,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46856743] [2022-01-18 13:22:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:22,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:22,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46856743] [2022-01-18 13:22:22,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46856743] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60007752] [2022-01-18 13:22:22,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:22:22,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:22,587 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:22,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 13:22:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:22,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:22,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:22,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:23,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60007752] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:23,533 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:23,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:23,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572106708] [2022-01-18 13:22:23,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:23,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:23,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:23,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:23,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:23,534 INFO L87 Difference]: Start difference. First operand 1436 states and 4041 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:26,698 INFO L93 Difference]: Finished difference Result 3158 states and 8754 transitions. [2022-01-18 13:22:26,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 13:22:26,698 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:26,702 INFO L225 Difference]: With dead ends: 3158 [2022-01-18 13:22:26,702 INFO L226 Difference]: Without dead ends: 3026 [2022-01-18 13:22:26,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4898 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1851, Invalid=12669, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 13:22:26,703 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 701 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:26,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 3354 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:22:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-01-18 13:22:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1504. [2022-01-18 13:22:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 2.821024617431803) internal successors, (4240), 1503 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:26,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 4240 transitions. [2022-01-18 13:22:26,732 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 4240 transitions. Word has length 70 [2022-01-18 13:22:26,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:26,732 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 4240 transitions. [2022-01-18 13:22:26,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 4240 transitions. [2022-01-18 13:22:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:26,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:26,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:26,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:26,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 13:22:26,950 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -295820047, now seen corresponding path program 14 times [2022-01-18 13:22:26,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:26,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002617558] [2022-01-18 13:22:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:26,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:27,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:27,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002617558] [2022-01-18 13:22:27,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002617558] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:27,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328867841] [2022-01-18 13:22:27,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:22:27,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:27,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:27,111 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:27,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 13:22:27,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:22:27,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:27,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:27,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:27,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:27,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328867841] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:27,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:27,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:27,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358302716] [2022-01-18 13:22:27,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:27,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:27,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:27,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:27,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:27,761 INFO L87 Difference]: Start difference. First operand 1504 states and 4240 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:29,403 INFO L93 Difference]: Finished difference Result 2838 states and 7871 transitions. [2022-01-18 13:22:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 13:22:29,404 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:29,407 INFO L225 Difference]: With dead ends: 2838 [2022-01-18 13:22:29,407 INFO L226 Difference]: Without dead ends: 2706 [2022-01-18 13:22:29,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2679 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1071, Invalid=7859, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 13:22:29,409 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 539 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:29,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2935 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:22:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-01-18 13:22:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1519. [2022-01-18 13:22:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.816205533596838) internal successors, (4275), 1518 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4275 transitions. [2022-01-18 13:22:29,428 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4275 transitions. Word has length 70 [2022-01-18 13:22:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:29,429 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4275 transitions. [2022-01-18 13:22:29,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4275 transitions. [2022-01-18 13:22:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:29,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:29,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:29,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:29,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:29,652 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash 146329989, now seen corresponding path program 15 times [2022-01-18 13:22:29,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694436166] [2022-01-18 13:22:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:29,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:29,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:29,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694436166] [2022-01-18 13:22:29,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694436166] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:29,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423615039] [2022-01-18 13:22:29,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:22:29,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:29,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:29,816 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:29,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 13:22:29,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:22:29,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:29,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:29,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:30,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:30,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423615039] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:30,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:30,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:30,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26588675] [2022-01-18 13:22:30,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:30,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:30,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:30,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:30,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:30,473 INFO L87 Difference]: Start difference. First operand 1519 states and 4275 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:33,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:33,626 INFO L93 Difference]: Finished difference Result 3305 states and 9252 transitions. [2022-01-18 13:22:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 13:22:33,626 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:33,630 INFO L225 Difference]: With dead ends: 3305 [2022-01-18 13:22:33,630 INFO L226 Difference]: Without dead ends: 3179 [2022-01-18 13:22:33,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2275, Invalid=13475, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 13:22:33,631 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 744 mSDsluCounter, 3189 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:33,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 3200 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:22:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-01-18 13:22:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 1615. [2022-01-18 13:22:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.8469640644361833) internal successors, (4595), 1614 states have internal predecessors, (4595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4595 transitions. [2022-01-18 13:22:33,661 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4595 transitions. Word has length 70 [2022-01-18 13:22:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:33,661 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4595 transitions. [2022-01-18 13:22:33,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4595 transitions. [2022-01-18 13:22:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:33,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:33,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:33,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:33,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 13:22:33,882 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1438640705, now seen corresponding path program 16 times [2022-01-18 13:22:33,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:33,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954001224] [2022-01-18 13:22:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:33,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:33,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:33,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954001224] [2022-01-18 13:22:33,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954001224] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:33,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145873009] [2022-01-18 13:22:33,991 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:22:33,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:33,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:33,992 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:34,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 13:22:34,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:22:34,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:34,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:22:34,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:34,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:34,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145873009] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:34,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:34,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:22:34,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486426017] [2022-01-18 13:22:34,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:34,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:22:34,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:22:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:22:34,557 INFO L87 Difference]: Start difference. First operand 1615 states and 4595 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:36,264 INFO L93 Difference]: Finished difference Result 3390 states and 9672 transitions. [2022-01-18 13:22:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-18 13:22:36,264 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:36,269 INFO L225 Difference]: With dead ends: 3390 [2022-01-18 13:22:36,269 INFO L226 Difference]: Without dead ends: 3213 [2022-01-18 13:22:36,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1687, Invalid=10745, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 13:22:36,271 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 587 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:36,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 3236 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:22:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-01-18 13:22:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 1683. [2022-01-18 13:22:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 2.859690844233056) internal successors, (4810), 1682 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4810 transitions. [2022-01-18 13:22:36,295 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4810 transitions. Word has length 70 [2022-01-18 13:22:36,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:36,296 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4810 transitions. [2022-01-18 13:22:36,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:36,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4810 transitions. [2022-01-18 13:22:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:36,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:36,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:36,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:36,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 13:22:36,513 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:36,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:36,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1845975855, now seen corresponding path program 17 times [2022-01-18 13:22:36,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:36,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138893744] [2022-01-18 13:22:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:36,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:36,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:36,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138893744] [2022-01-18 13:22:36,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138893744] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:36,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536501979] [2022-01-18 13:22:36,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:22:36,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:36,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:36,651 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:36,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 13:22:36,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:22:36,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:36,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:22:36,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:36,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:37,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536501979] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:37,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:37,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:22:37,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165177653] [2022-01-18 13:22:37,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:37,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:22:37,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:37,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:22:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:22:37,262 INFO L87 Difference]: Start difference. First operand 1683 states and 4810 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:38,312 INFO L93 Difference]: Finished difference Result 2439 states and 6867 transitions. [2022-01-18 13:22:38,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 13:22:38,312 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:38,315 INFO L225 Difference]: With dead ends: 2439 [2022-01-18 13:22:38,315 INFO L226 Difference]: Without dead ends: 2376 [2022-01-18 13:22:38,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1318, Invalid=6872, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 13:22:38,316 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 647 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:38,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 3098 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:22:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-01-18 13:22:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1763. [2022-01-18 13:22:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 2.8819523269012484) internal successors, (5078), 1762 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5078 transitions. [2022-01-18 13:22:38,354 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5078 transitions. Word has length 70 [2022-01-18 13:22:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:38,355 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 5078 transitions. [2022-01-18 13:22:38,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5078 transitions. [2022-01-18 13:22:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:38,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:38,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:38,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:38,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 13:22:38,558 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:38,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash 133886259, now seen corresponding path program 18 times [2022-01-18 13:22:38,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:38,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633624590] [2022-01-18 13:22:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:38,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:38,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:38,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633624590] [2022-01-18 13:22:38,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633624590] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:38,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057004620] [2022-01-18 13:22:38,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:22:38,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:38,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:38,704 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:38,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 13:22:38,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:22:38,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:38,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:22:38,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:39,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:39,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057004620] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:39,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:39,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:22:39,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349318829] [2022-01-18 13:22:39,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:39,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:22:39,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:22:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:22:39,348 INFO L87 Difference]: Start difference. First operand 1763 states and 5078 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:40,387 INFO L93 Difference]: Finished difference Result 2219 states and 6317 transitions. [2022-01-18 13:22:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 13:22:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:40,391 INFO L225 Difference]: With dead ends: 2219 [2022-01-18 13:22:40,391 INFO L226 Difference]: Without dead ends: 2152 [2022-01-18 13:22:40,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1233, Invalid=6423, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 13:22:40,391 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 621 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:40,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 2375 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:22:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2022-01-18 13:22:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1683. [2022-01-18 13:22:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 2.8620689655172415) internal successors, (4814), 1682 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4814 transitions. [2022-01-18 13:22:40,411 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4814 transitions. Word has length 70 [2022-01-18 13:22:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:40,411 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4814 transitions. [2022-01-18 13:22:40,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4814 transitions. [2022-01-18 13:22:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:40,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:40,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:40,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:40,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:40,629 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1885871487, now seen corresponding path program 19 times [2022-01-18 13:22:40,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:40,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097385809] [2022-01-18 13:22:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:40,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:40,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097385809] [2022-01-18 13:22:40,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097385809] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:40,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944915181] [2022-01-18 13:22:40,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:22:40,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:40,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:40,740 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:40,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 13:22:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:40,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:40,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:41,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:41,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944915181] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:41,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:41,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:41,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984613175] [2022-01-18 13:22:41,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:41,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:41,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:41,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:41,472 INFO L87 Difference]: Start difference. First operand 1683 states and 4814 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:44,415 INFO L93 Difference]: Finished difference Result 3486 states and 9856 transitions. [2022-01-18 13:22:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 13:22:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:44,419 INFO L225 Difference]: With dead ends: 3486 [2022-01-18 13:22:44,420 INFO L226 Difference]: Without dead ends: 3360 [2022-01-18 13:22:44,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1812, Invalid=11298, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 13:22:44,422 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 704 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:44,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2642 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:22:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-01-18 13:22:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 1795. [2022-01-18 13:22:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 2.881828316610925) internal successors, (5170), 1794 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5170 transitions. [2022-01-18 13:22:44,446 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5170 transitions. Word has length 70 [2022-01-18 13:22:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:44,447 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5170 transitions. [2022-01-18 13:22:44,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5170 transitions. [2022-01-18 13:22:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:44,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:44,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:44,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 13:22:44,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:44,663 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:44,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:44,663 INFO L85 PathProgramCache]: Analyzing trace with hash 300900793, now seen corresponding path program 20 times [2022-01-18 13:22:44,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:44,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171170118] [2022-01-18 13:22:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:44,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:44,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:44,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171170118] [2022-01-18 13:22:44,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171170118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:44,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294820007] [2022-01-18 13:22:44,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:22:44,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:44,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:44,817 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:44,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 13:22:44,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:22:44,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:44,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:44,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:45,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:45,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294820007] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:45,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:45,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:45,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310039894] [2022-01-18 13:22:45,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:45,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:45,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:45,473 INFO L87 Difference]: Start difference. First operand 1795 states and 5170 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:48,038 INFO L93 Difference]: Finished difference Result 3422 states and 9717 transitions. [2022-01-18 13:22:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 13:22:48,038 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:48,042 INFO L225 Difference]: With dead ends: 3422 [2022-01-18 13:22:48,042 INFO L226 Difference]: Without dead ends: 3282 [2022-01-18 13:22:48,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4527 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1850, Invalid=11490, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 13:22:48,043 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 683 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:48,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2542 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:22:48,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-01-18 13:22:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 1787. [2022-01-18 13:22:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1786 states have (on average 2.875699888017917) internal successors, (5136), 1786 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 5136 transitions. [2022-01-18 13:22:48,110 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 5136 transitions. Word has length 70 [2022-01-18 13:22:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:48,110 INFO L470 AbstractCegarLoop]: Abstraction has 1787 states and 5136 transitions. [2022-01-18 13:22:48,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 5136 transitions. [2022-01-18 13:22:48,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:48,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:48,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:48,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:48,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-01-18 13:22:48,328 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash -985708153, now seen corresponding path program 21 times [2022-01-18 13:22:48,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:48,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545400834] [2022-01-18 13:22:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:48,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:48,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:48,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545400834] [2022-01-18 13:22:48,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545400834] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:48,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87679503] [2022-01-18 13:22:48,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:22:48,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:48,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:48,469 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:48,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 13:22:48,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:22:48,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:48,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:48,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:48,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:49,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87679503] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:49,349 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:49,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:49,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55131800] [2022-01-18 13:22:49,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:49,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:49,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:49,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:49,350 INFO L87 Difference]: Start difference. First operand 1787 states and 5136 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:53,554 INFO L93 Difference]: Finished difference Result 3648 states and 10326 transitions. [2022-01-18 13:22:53,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 13:22:53,555 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:53,559 INFO L225 Difference]: With dead ends: 3648 [2022-01-18 13:22:53,559 INFO L226 Difference]: Without dead ends: 3516 [2022-01-18 13:22:53,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6642 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2527, Invalid=15833, Unknown=0, NotChecked=0, Total=18360 [2022-01-18 13:22:53,561 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 793 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:53,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2696 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:22:53,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-01-18 13:22:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1755. [2022-01-18 13:22:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 2.877993158494869) internal successors, (5048), 1754 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 5048 transitions. [2022-01-18 13:22:53,585 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 5048 transitions. Word has length 70 [2022-01-18 13:22:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:53,585 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 5048 transitions. [2022-01-18 13:22:53,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 5048 transitions. [2022-01-18 13:22:53,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:53,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:53,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:53,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 13:22:53,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:53,802 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1930218187, now seen corresponding path program 22 times [2022-01-18 13:22:53,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:53,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403042641] [2022-01-18 13:22:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:53,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:53,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:53,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403042641] [2022-01-18 13:22:53,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403042641] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:53,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694790846] [2022-01-18 13:22:53,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:22:53,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:53,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:53,904 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:53,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 13:22:53,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:22:53,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:53,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:22:53,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:54,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:54,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694790846] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:54,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:54,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:22:54,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147407124] [2022-01-18 13:22:54,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:54,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:22:54,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:22:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:22:54,496 INFO L87 Difference]: Start difference. First operand 1755 states and 5048 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:55,730 INFO L93 Difference]: Finished difference Result 2948 states and 8269 transitions. [2022-01-18 13:22:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 13:22:55,730 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:55,734 INFO L225 Difference]: With dead ends: 2948 [2022-01-18 13:22:55,734 INFO L226 Difference]: Without dead ends: 2837 [2022-01-18 13:22:55,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1221, Invalid=7335, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 13:22:55,738 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 471 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:55,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 3670 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:22:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-01-18 13:22:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1811. [2022-01-18 13:22:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 2.887292817679558) internal successors, (5226), 1810 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 5226 transitions. [2022-01-18 13:22:55,761 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 5226 transitions. Word has length 70 [2022-01-18 13:22:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:55,761 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 5226 transitions. [2022-01-18 13:22:55,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:55,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 5226 transitions. [2022-01-18 13:22:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:55,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:55,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:55,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:55,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:55,967 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:55,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1922599073, now seen corresponding path program 23 times [2022-01-18 13:22:55,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:55,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013972529] [2022-01-18 13:22:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:55,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:56,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013972529] [2022-01-18 13:22:56,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013972529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198551108] [2022-01-18 13:22:56,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:22:56,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:56,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:56,143 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:56,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 13:22:56,208 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:22:56,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:56,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:22:56,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:56,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:56,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198551108] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:56,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:56,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:22:56,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710000896] [2022-01-18 13:22:56,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:56,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:22:56,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:22:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:22:56,663 INFO L87 Difference]: Start difference. First operand 1811 states and 5226 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:22:57,489 INFO L93 Difference]: Finished difference Result 2448 states and 6998 transitions. [2022-01-18 13:22:57,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 13:22:57,490 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:22:57,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:22:57,493 INFO L225 Difference]: With dead ends: 2448 [2022-01-18 13:22:57,493 INFO L226 Difference]: Without dead ends: 2385 [2022-01-18 13:22:57,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=968, Invalid=5038, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 13:22:57,494 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 678 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:22:57,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 2744 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:22:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-01-18 13:22:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1935. [2022-01-18 13:22:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 2.892967942088935) internal successors, (5595), 1934 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 5595 transitions. [2022-01-18 13:22:57,530 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 5595 transitions. Word has length 70 [2022-01-18 13:22:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:22:57,531 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 5595 transitions. [2022-01-18 13:22:57,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:22:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 5595 transitions. [2022-01-18 13:22:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:22:57,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:22:57,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:22:57,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 13:22:57,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:57,748 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:22:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:22:57,749 INFO L85 PathProgramCache]: Analyzing trace with hash 787397529, now seen corresponding path program 24 times [2022-01-18 13:22:57,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:22:57,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699695572] [2022-01-18 13:22:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:22:57,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:22:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:22:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:57,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:22:57,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699695572] [2022-01-18 13:22:57,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699695572] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:22:57,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621962076] [2022-01-18 13:22:57,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:22:57,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:22:57,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:22:57,875 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:22:57,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 13:22:57,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:22:57,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:22:57,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:22:57,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:22:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:58,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:22:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:22:58,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621962076] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:22:58,484 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:22:58,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:22:58,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407341297] [2022-01-18 13:22:58,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:22:58,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:22:58,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:22:58,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:22:58,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:22:58,486 INFO L87 Difference]: Start difference. First operand 1935 states and 5595 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:02,187 INFO L93 Difference]: Finished difference Result 4151 states and 11923 transitions. [2022-01-18 13:23:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 13:23:02,187 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:02,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:02,193 INFO L225 Difference]: With dead ends: 4151 [2022-01-18 13:23:02,193 INFO L226 Difference]: Without dead ends: 4011 [2022-01-18 13:23:02,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6756 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2828, Invalid=15262, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 13:23:02,195 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 919 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:02,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 2419 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-01-18 13:23:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2051. [2022-01-18 13:23:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 2.937560975609756) internal successors, (6022), 2050 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 6022 transitions. [2022-01-18 13:23:02,270 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 6022 transitions. Word has length 70 [2022-01-18 13:23:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:02,270 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 6022 transitions. [2022-01-18 13:23:02,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:02,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 6022 transitions. [2022-01-18 13:23:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:02,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:02,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:02,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:02,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:02,493 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash -499211417, now seen corresponding path program 25 times [2022-01-18 13:23:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:02,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068081306] [2022-01-18 13:23:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:02,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:02,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:02,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068081306] [2022-01-18 13:23:02,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068081306] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:02,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647536506] [2022-01-18 13:23:02,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:23:02,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:02,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:02,620 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:02,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 13:23:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:02,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:02,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:03,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647536506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:03,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:03,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:03,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119670127] [2022-01-18 13:23:03,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:03,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:03,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:03,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:03,237 INFO L87 Difference]: Start difference. First operand 2051 states and 6022 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:07,225 INFO L93 Difference]: Finished difference Result 4543 states and 12903 transitions. [2022-01-18 13:23:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-18 13:23:07,226 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:07,232 INFO L225 Difference]: With dead ends: 4543 [2022-01-18 13:23:07,233 INFO L226 Difference]: Without dead ends: 4411 [2022-01-18 13:23:07,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10013 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3803, Invalid=21637, Unknown=0, NotChecked=0, Total=25440 [2022-01-18 13:23:07,234 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 946 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:07,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 2892 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:23:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2022-01-18 13:23:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 1943. [2022-01-18 13:23:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1942 states have (on average 2.915036045314109) internal successors, (5661), 1942 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 5661 transitions. [2022-01-18 13:23:07,270 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 5661 transitions. Word has length 70 [2022-01-18 13:23:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:07,270 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 5661 transitions. [2022-01-18 13:23:07,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 5661 transitions. [2022-01-18 13:23:07,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:07,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:07,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:07,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:07,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-01-18 13:23:07,488 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash -222953207, now seen corresponding path program 26 times [2022-01-18 13:23:07,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:07,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571853928] [2022-01-18 13:23:07,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:07,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:07,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:07,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571853928] [2022-01-18 13:23:07,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571853928] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:07,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446840069] [2022-01-18 13:23:07,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:23:07,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:07,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:07,624 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:07,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 13:23:07,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:23:07,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:07,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:07,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:07,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:08,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446840069] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:08,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:08,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:08,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049598300] [2022-01-18 13:23:08,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:08,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:08,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:08,449 INFO L87 Difference]: Start difference. First operand 1943 states and 5661 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:12,114 INFO L93 Difference]: Finished difference Result 4168 states and 12047 transitions. [2022-01-18 13:23:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 13:23:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:12,141 INFO L225 Difference]: With dead ends: 4168 [2022-01-18 13:23:12,141 INFO L226 Difference]: Without dead ends: 4093 [2022-01-18 13:23:12,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7903 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3498, Invalid=17672, Unknown=0, NotChecked=0, Total=21170 [2022-01-18 13:23:12,143 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1077 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:12,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 2603 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2022-01-18 13:23:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2171. [2022-01-18 13:23:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 2170 states have (on average 2.9419354838709677) internal successors, (6384), 2170 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 6384 transitions. [2022-01-18 13:23:12,182 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 6384 transitions. Word has length 70 [2022-01-18 13:23:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:12,182 INFO L470 AbstractCegarLoop]: Abstraction has 2171 states and 6384 transitions. [2022-01-18 13:23:12,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 6384 transitions. [2022-01-18 13:23:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:12,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:12,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:12,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 13:23:12,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 13:23:12,386 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:12,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:12,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1935042803, now seen corresponding path program 27 times [2022-01-18 13:23:12,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:12,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678225675] [2022-01-18 13:23:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:12,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:12,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:12,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678225675] [2022-01-18 13:23:12,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678225675] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:12,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512834381] [2022-01-18 13:23:12,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:23:12,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:12,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:12,514 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:12,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 13:23:12,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:23:12,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:12,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:12,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:12,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:13,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512834381] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:13,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:13,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:13,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278862058] [2022-01-18 13:23:13,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:13,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:13,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:13,396 INFO L87 Difference]: Start difference. First operand 2171 states and 6384 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:17,535 INFO L93 Difference]: Finished difference Result 4061 states and 11706 transitions. [2022-01-18 13:23:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 13:23:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:17,541 INFO L225 Difference]: With dead ends: 4061 [2022-01-18 13:23:17,541 INFO L226 Difference]: Without dead ends: 3935 [2022-01-18 13:23:17,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7685 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3319, Invalid=17273, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 13:23:17,542 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1021 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:17,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 2908 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-01-18 13:23:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2163. [2022-01-18 13:23:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 2.942645698427382) internal successors, (6362), 2162 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 6362 transitions. [2022-01-18 13:23:17,575 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 6362 transitions. Word has length 70 [2022-01-18 13:23:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:17,575 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 6362 transitions. [2022-01-18 13:23:17,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 6362 transitions. [2022-01-18 13:23:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:17,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:17,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:17,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:17,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 13:23:17,799 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash 774953799, now seen corresponding path program 28 times [2022-01-18 13:23:17,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774208075] [2022-01-18 13:23:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:17,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:17,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:17,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774208075] [2022-01-18 13:23:17,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774208075] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:17,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897660152] [2022-01-18 13:23:17,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:23:17,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:17,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:17,931 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:17,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 13:23:17,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:23:17,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:17,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:23:17,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:18,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:18,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897660152] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:18,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:18,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:23:18,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829425448] [2022-01-18 13:23:18,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:18,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:23:18,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:23:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:23:18,675 INFO L87 Difference]: Start difference. First operand 2163 states and 6362 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:21,785 INFO L93 Difference]: Finished difference Result 4136 states and 12015 transitions. [2022-01-18 13:23:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-18 13:23:21,786 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:21,791 INFO L225 Difference]: With dead ends: 4136 [2022-01-18 13:23:21,791 INFO L226 Difference]: Without dead ends: 3990 [2022-01-18 13:23:21,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8287 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2953, Invalid=20609, Unknown=0, NotChecked=0, Total=23562 [2022-01-18 13:23:21,793 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 851 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:21,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 3318 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2022-01-18 13:23:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 2547. [2022-01-18 13:23:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 2546 states have (on average 2.978004713275727) internal successors, (7582), 2546 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 7582 transitions. [2022-01-18 13:23:21,824 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 7582 transitions. Word has length 70 [2022-01-18 13:23:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:21,824 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 7582 transitions. [2022-01-18 13:23:21,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 7582 transitions. [2022-01-18 13:23:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:21,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:21,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:21,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:22,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:22,041 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:22,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:22,041 INFO L85 PathProgramCache]: Analyzing trace with hash 8283375, now seen corresponding path program 29 times [2022-01-18 13:23:22,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:22,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869222313] [2022-01-18 13:23:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:22,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:22,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:22,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869222313] [2022-01-18 13:23:22,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869222313] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:22,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286678769] [2022-01-18 13:23:22,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:23:22,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:22,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:22,175 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:22,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 13:23:22,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:23:22,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:22,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:22,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:22,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:23,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286678769] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:23,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:23,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:23,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563836881] [2022-01-18 13:23:23,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:23,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:23,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:23,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:23,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:23,084 INFO L87 Difference]: Start difference. First operand 2547 states and 7582 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:24,896 INFO L93 Difference]: Finished difference Result 4263 states and 12331 transitions. [2022-01-18 13:23:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 13:23:24,896 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:24,902 INFO L225 Difference]: With dead ends: 4263 [2022-01-18 13:23:24,902 INFO L226 Difference]: Without dead ends: 4131 [2022-01-18 13:23:24,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 13:23:24,903 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 503 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:24,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 2851 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:23:24,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2022-01-18 13:23:24,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 2583. [2022-01-18 13:23:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2582 states have (on average 2.9763749031758326) internal successors, (7685), 2582 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 7685 transitions. [2022-01-18 13:23:24,950 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 7685 transitions. Word has length 70 [2022-01-18 13:23:24,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:24,950 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 7685 transitions. [2022-01-18 13:23:24,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 7685 transitions. [2022-01-18 13:23:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:24,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:24,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:24,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:25,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:25,156 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:25,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1430331001, now seen corresponding path program 30 times [2022-01-18 13:23:25,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:25,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611847069] [2022-01-18 13:23:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:25,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:25,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:25,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611847069] [2022-01-18 13:23:25,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611847069] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:25,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546590806] [2022-01-18 13:23:25,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:23:25,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:25,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:25,300 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:25,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 13:23:25,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:23:25,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:25,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:23:25,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:25,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:25,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546590806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:25,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:25,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:23:25,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468856679] [2022-01-18 13:23:25,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:25,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:23:25,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:23:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:23:25,975 INFO L87 Difference]: Start difference. First operand 2583 states and 7685 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:26,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:26,477 INFO L93 Difference]: Finished difference Result 3172 states and 9281 transitions. [2022-01-18 13:23:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:23:26,477 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:26,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:26,481 INFO L225 Difference]: With dead ends: 3172 [2022-01-18 13:23:26,481 INFO L226 Difference]: Without dead ends: 3031 [2022-01-18 13:23:26,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:23:26,481 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 485 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:26,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 2620 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:23:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-01-18 13:23:26,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2699. [2022-01-18 13:23:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 2.968124536693847) internal successors, (8008), 2698 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 8008 transitions. [2022-01-18 13:23:26,510 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 8008 transitions. Word has length 70 [2022-01-18 13:23:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:26,511 INFO L470 AbstractCegarLoop]: Abstraction has 2699 states and 8008 transitions. [2022-01-18 13:23:26,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 8008 transitions. [2022-01-18 13:23:26,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:26,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:26,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:26,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 13:23:26,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-01-18 13:23:26,730 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash -924716199, now seen corresponding path program 31 times [2022-01-18 13:23:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:26,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734094071] [2022-01-18 13:23:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:26,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:26,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:26,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734094071] [2022-01-18 13:23:26,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734094071] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:26,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072721206] [2022-01-18 13:23:26,872 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:23:26,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:26,888 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:26,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 13:23:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:26,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:26,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:27,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:27,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072721206] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:27,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:27,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:27,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925248849] [2022-01-18 13:23:27,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:27,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:27,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:27,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:27,588 INFO L87 Difference]: Start difference. First operand 2699 states and 8008 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:31,927 INFO L93 Difference]: Finished difference Result 7297 states and 21595 transitions. [2022-01-18 13:23:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-18 13:23:31,927 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:31,936 INFO L225 Difference]: With dead ends: 7297 [2022-01-18 13:23:31,937 INFO L226 Difference]: Without dead ends: 7171 [2022-01-18 13:23:31,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11497 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4313, Invalid=25789, Unknown=0, NotChecked=0, Total=30102 [2022-01-18 13:23:31,938 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 983 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:31,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 2987 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2022-01-18 13:23:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 2923. [2022-01-18 13:23:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2922 states have (on average 2.9791238877481176) internal successors, (8705), 2922 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 8705 transitions. [2022-01-18 13:23:31,986 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 8705 transitions. Word has length 70 [2022-01-18 13:23:31,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:31,989 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 8705 transitions. [2022-01-18 13:23:31,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 8705 transitions. [2022-01-18 13:23:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:31,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:31,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:32,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:32,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:32,206 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:32,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1785280403, now seen corresponding path program 32 times [2022-01-18 13:23:32,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:32,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408677402] [2022-01-18 13:23:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:32,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:32,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:32,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408677402] [2022-01-18 13:23:32,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408677402] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:32,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401957591] [2022-01-18 13:23:32,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:23:32,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:32,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:32,355 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:32,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 13:23:32,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:23:32,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:32,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:32,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:32,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:33,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401957591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:33,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:33,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:33,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278333430] [2022-01-18 13:23:33,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:33,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:33,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:33,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:33,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:33,232 INFO L87 Difference]: Start difference. First operand 2923 states and 8705 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:38,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:38,265 INFO L93 Difference]: Finished difference Result 7159 states and 21275 transitions. [2022-01-18 13:23:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-01-18 13:23:38,266 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:38,275 INFO L225 Difference]: With dead ends: 7159 [2022-01-18 13:23:38,275 INFO L226 Difference]: Without dead ends: 7019 [2022-01-18 13:23:38,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11450 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4310, Invalid=25792, Unknown=0, NotChecked=0, Total=30102 [2022-01-18 13:23:38,277 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1163 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:38,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 2904 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:38,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2022-01-18 13:23:38,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 2943. [2022-01-18 13:23:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2942 states have (on average 2.976206662134602) internal successors, (8756), 2942 states have internal predecessors, (8756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 8756 transitions. [2022-01-18 13:23:38,320 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 8756 transitions. Word has length 70 [2022-01-18 13:23:38,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:38,320 INFO L470 AbstractCegarLoop]: Abstraction has 2943 states and 8756 transitions. [2022-01-18 13:23:38,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:38,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 8756 transitions. [2022-01-18 13:23:38,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:38,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:38,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:38,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:38,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:38,539 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:38,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash 498671457, now seen corresponding path program 33 times [2022-01-18 13:23:38,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:38,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985283297] [2022-01-18 13:23:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:38,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:38,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:38,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985283297] [2022-01-18 13:23:38,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985283297] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:38,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338087104] [2022-01-18 13:23:38,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:23:38,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:38,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:38,661 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:38,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 13:23:38,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:23:38,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:38,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:38,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:38,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:39,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338087104] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:39,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:39,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:39,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819181726] [2022-01-18 13:23:39,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:39,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:39,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:39,271 INFO L87 Difference]: Start difference. First operand 2943 states and 8756 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:44,364 INFO L93 Difference]: Finished difference Result 7372 states and 21849 transitions. [2022-01-18 13:23:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-01-18 13:23:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:44,375 INFO L225 Difference]: With dead ends: 7372 [2022-01-18 13:23:44,375 INFO L226 Difference]: Without dead ends: 7240 [2022-01-18 13:23:44,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15559 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5327, Invalid=33679, Unknown=0, NotChecked=0, Total=39006 [2022-01-18 13:23:44,379 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1187 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:44,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 3153 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-01-18 13:23:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 2911. [2022-01-18 13:23:44,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2910 states have (on average 2.9786941580756015) internal successors, (8668), 2910 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 8668 transitions. [2022-01-18 13:23:44,451 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 8668 transitions. Word has length 70 [2022-01-18 13:23:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:44,451 INFO L470 AbstractCegarLoop]: Abstraction has 2911 states and 8668 transitions. [2022-01-18 13:23:44,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 8668 transitions. [2022-01-18 13:23:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:44,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:44,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:44,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 13:23:44,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-18 13:23:44,667 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash -880369499, now seen corresponding path program 34 times [2022-01-18 13:23:44,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:44,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325720897] [2022-01-18 13:23:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:44,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:44,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:44,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325720897] [2022-01-18 13:23:44,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325720897] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:44,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315689304] [2022-01-18 13:23:44,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:23:44,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:44,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:44,816 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:44,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 13:23:44,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:23:44,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:44,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:23:44,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:45,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:45,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315689304] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:45,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:45,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:23:45,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700134864] [2022-01-18 13:23:45,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:45,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:23:45,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:45,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:23:45,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:23:45,455 INFO L87 Difference]: Start difference. First operand 2911 states and 8668 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:48,114 INFO L93 Difference]: Finished difference Result 6164 states and 18125 transitions. [2022-01-18 13:23:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-18 13:23:48,114 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:48,123 INFO L225 Difference]: With dead ends: 6164 [2022-01-18 13:23:48,123 INFO L226 Difference]: Without dead ends: 6053 [2022-01-18 13:23:48,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5871 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2442, Invalid=13560, Unknown=0, NotChecked=0, Total=16002 [2022-01-18 13:23:48,124 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 877 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:48,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 3370 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2022-01-18 13:23:48,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 2947. [2022-01-18 13:23:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2947 states, 2946 states have (on average 2.9813306177868295) internal successors, (8783), 2946 states have internal predecessors, (8783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 8783 transitions. [2022-01-18 13:23:48,170 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 8783 transitions. Word has length 70 [2022-01-18 13:23:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:48,170 INFO L470 AbstractCegarLoop]: Abstraction has 2947 states and 8783 transitions. [2022-01-18 13:23:48,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 8783 transitions. [2022-01-18 13:23:48,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:48,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:48,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:48,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 13:23:48,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:48,385 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:48,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash -438219463, now seen corresponding path program 35 times [2022-01-18 13:23:48,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:48,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830776198] [2022-01-18 13:23:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:48,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:48,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:48,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830776198] [2022-01-18 13:23:48,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830776198] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:48,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370836890] [2022-01-18 13:23:48,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:23:48,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:48,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:48,524 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:48,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 13:23:48,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:23:48,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:48,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:23:48,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:48,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:23:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370836890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:48,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 13:23:48,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-01-18 13:23:48,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51493487] [2022-01-18 13:23:48,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:48,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 13:23:48,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 13:23:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-01-18 13:23:48,839 INFO L87 Difference]: Start difference. First operand 2947 states and 8783 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:49,102 INFO L93 Difference]: Finished difference Result 3382 states and 9952 transitions. [2022-01-18 13:23:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:23:49,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:49,107 INFO L225 Difference]: With dead ends: 3382 [2022-01-18 13:23:49,107 INFO L226 Difference]: Without dead ends: 3315 [2022-01-18 13:23:49,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:23:49,107 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 245 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:49,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1045 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:23:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-01-18 13:23:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 2859. [2022-01-18 13:23:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 2.9730580825752275) internal successors, (8497), 2858 states have internal predecessors, (8497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 8497 transitions. [2022-01-18 13:23:49,140 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 8497 transitions. Word has length 70 [2022-01-18 13:23:49,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:49,140 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 8497 transitions. [2022-01-18 13:23:49,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 8497 transitions. [2022-01-18 13:23:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:49,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:49,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:49,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:49,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-18 13:23:49,376 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:49,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:49,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2023190157, now seen corresponding path program 36 times [2022-01-18 13:23:49,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:49,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407888397] [2022-01-18 13:23:49,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:49,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:49,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:49,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407888397] [2022-01-18 13:23:49,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407888397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:49,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733213411] [2022-01-18 13:23:49,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:23:49,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:49,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:49,546 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:49,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 13:23:49,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:23:49,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:23:49,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:49,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:49,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:50,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733213411] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:50,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:50,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:50,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927672408] [2022-01-18 13:23:50,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:50,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:50,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:50,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:50,356 INFO L87 Difference]: Start difference. First operand 2859 states and 8497 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:55,148 INFO L93 Difference]: Finished difference Result 7388 states and 21882 transitions. [2022-01-18 13:23:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-01-18 13:23:55,148 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:23:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:55,158 INFO L225 Difference]: With dead ends: 7388 [2022-01-18 13:23:55,158 INFO L226 Difference]: Without dead ends: 7248 [2022-01-18 13:23:55,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19327 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7100, Invalid=39772, Unknown=0, NotChecked=0, Total=46872 [2022-01-18 13:23:55,170 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1200 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:55,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 3161 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2022-01-18 13:23:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 2899. [2022-01-18 13:23:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 2.9755003450655626) internal successors, (8623), 2898 states have internal predecessors, (8623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 8623 transitions. [2022-01-18 13:23:55,228 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 8623 transitions. Word has length 70 [2022-01-18 13:23:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:55,228 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 8623 transitions. [2022-01-18 13:23:55,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 8623 transitions. [2022-01-18 13:23:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:23:55,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:55,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:55,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 13:23:55,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:55,447 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:55,448 INFO L85 PathProgramCache]: Analyzing trace with hash 985168193, now seen corresponding path program 37 times [2022-01-18 13:23:55,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:55,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234997634] [2022-01-18 13:23:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:55,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:55,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234997634] [2022-01-18 13:23:55,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234997634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:23:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274823867] [2022-01-18 13:23:55,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:23:55,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:23:55,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:55,564 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:23:55,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 13:23:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:55,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:23:55,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:23:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:55,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:23:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:56,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274823867] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:23:56,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:23:56,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:23:56,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528156062] [2022-01-18 13:23:56,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:23:56,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:23:56,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:23:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:23:56,387 INFO L87 Difference]: Start difference. First operand 2899 states and 8623 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:03,244 INFO L93 Difference]: Finished difference Result 7844 states and 23020 transitions. [2022-01-18 13:24:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 13:24:03,244 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:03,255 INFO L225 Difference]: With dead ends: 7844 [2022-01-18 13:24:03,255 INFO L226 Difference]: Without dead ends: 7712 [2022-01-18 13:24:03,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25481 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=8557, Invalid=51223, Unknown=0, NotChecked=0, Total=59780 [2022-01-18 13:24:03,260 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1502 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:03,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 2725 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:24:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-01-18 13:24:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 2875. [2022-01-18 13:24:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2874 states have (on average 2.977383437717467) internal successors, (8557), 2874 states have internal predecessors, (8557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 8557 transitions. [2022-01-18 13:24:03,313 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 8557 transitions. Word has length 70 [2022-01-18 13:24:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:03,313 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 8557 transitions. [2022-01-18 13:24:03,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 8557 transitions. [2022-01-18 13:24:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:03,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:03,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:03,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:03,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 13:24:03,526 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:03,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1261426403, now seen corresponding path program 38 times [2022-01-18 13:24:03,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:03,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104099974] [2022-01-18 13:24:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:03,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:03,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:03,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104099974] [2022-01-18 13:24:03,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104099974] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180570859] [2022-01-18 13:24:03,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:24:03,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:03,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:03,648 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:03,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 13:24:03,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:24:03,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:03,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:03,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:03,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:04,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180570859] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:04,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:04,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:04,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920807614] [2022-01-18 13:24:04,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:04,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:04,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:04,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:04,216 INFO L87 Difference]: Start difference. First operand 2875 states and 8557 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:05,202 INFO L93 Difference]: Finished difference Result 3171 states and 9296 transitions. [2022-01-18 13:24:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 13:24:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:05,206 INFO L225 Difference]: With dead ends: 3171 [2022-01-18 13:24:05,206 INFO L226 Difference]: Without dead ends: 3108 [2022-01-18 13:24:05,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1327, Invalid=5645, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 13:24:05,207 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 768 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:05,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 2018 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-01-18 13:24:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2895. [2022-01-18 13:24:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2894 states have (on average 2.977194194885971) internal successors, (8616), 2894 states have internal predecessors, (8616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 8616 transitions. [2022-01-18 13:24:05,238 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 8616 transitions. Word has length 70 [2022-01-18 13:24:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:05,238 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 8616 transitions. [2022-01-18 13:24:05,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 8616 transitions. [2022-01-18 13:24:05,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:05,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:05,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:05,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:05,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:05,445 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:05,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash -450663193, now seen corresponding path program 39 times [2022-01-18 13:24:05,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:05,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079214920] [2022-01-18 13:24:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:05,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:05,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:05,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079214920] [2022-01-18 13:24:05,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079214920] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:05,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204419750] [2022-01-18 13:24:05,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:24:05,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:05,582 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:05,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 13:24:05,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:24:05,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:05,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:05,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:05,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:06,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204419750] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:06,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:06,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:06,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574610737] [2022-01-18 13:24:06,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:06,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:06,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:06,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:06,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:06,323 INFO L87 Difference]: Start difference. First operand 2895 states and 8616 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:07,318 INFO L93 Difference]: Finished difference Result 3164 states and 9233 transitions. [2022-01-18 13:24:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 13:24:07,318 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:07,323 INFO L225 Difference]: With dead ends: 3164 [2022-01-18 13:24:07,323 INFO L226 Difference]: Without dead ends: 3101 [2022-01-18 13:24:07,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 13:24:07,324 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 732 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:07,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1947 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-01-18 13:24:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2263. [2022-01-18 13:24:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.892130857648099) internal successors, (6542), 2262 states have internal predecessors, (6542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:07,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6542 transitions. [2022-01-18 13:24:07,353 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6542 transitions. Word has length 70 [2022-01-18 13:24:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:07,353 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6542 transitions. [2022-01-18 13:24:07,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:07,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6542 transitions. [2022-01-18 13:24:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:07,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:07,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:07,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:07,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:07,572 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:07,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2035633887, now seen corresponding path program 40 times [2022-01-18 13:24:07,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:07,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504462979] [2022-01-18 13:24:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:07,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:07,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:07,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504462979] [2022-01-18 13:24:07,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504462979] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:07,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231297958] [2022-01-18 13:24:07,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:24:07,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:07,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:07,733 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:07,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 13:24:07,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:24:07,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:07,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:24:07,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:08,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:08,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231297958] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:08,449 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:08,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:24:08,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748172699] [2022-01-18 13:24:08,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:08,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:24:08,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:08,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:24:08,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:24:08,450 INFO L87 Difference]: Start difference. First operand 2263 states and 6542 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:11,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:11,300 INFO L93 Difference]: Finished difference Result 4510 states and 12932 transitions. [2022-01-18 13:24:11,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-18 13:24:11,300 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:11,306 INFO L225 Difference]: With dead ends: 4510 [2022-01-18 13:24:11,307 INFO L226 Difference]: Without dead ends: 4398 [2022-01-18 13:24:11,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10124 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4209, Invalid=22851, Unknown=0, NotChecked=0, Total=27060 [2022-01-18 13:24:11,308 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1099 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:11,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 3642 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:11,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-01-18 13:24:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 2271. [2022-01-18 13:24:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2270 states have (on average 2.8969162995594715) internal successors, (6576), 2270 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 6576 transitions. [2022-01-18 13:24:11,348 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 6576 transitions. Word has length 70 [2022-01-18 13:24:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:11,348 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 6576 transitions. [2022-01-18 13:24:11,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 6576 transitions. [2022-01-18 13:24:11,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:11,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:11,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:11,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:11,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-01-18 13:24:11,572 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1492662985, now seen corresponding path program 41 times [2022-01-18 13:24:11,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:11,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800770621] [2022-01-18 13:24:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:11,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:11,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:11,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800770621] [2022-01-18 13:24:11,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800770621] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:11,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815486343] [2022-01-18 13:24:11,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:24:11,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:11,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:11,678 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:11,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 13:24:11,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:24:11,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:11,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:11,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:12,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815486343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:12,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:12,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:12,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851664649] [2022-01-18 13:24:12,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:12,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:12,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:12,449 INFO L87 Difference]: Start difference. First operand 2271 states and 6576 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:14,909 INFO L93 Difference]: Finished difference Result 4929 states and 14107 transitions. [2022-01-18 13:24:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 13:24:14,909 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:14,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:14,915 INFO L225 Difference]: With dead ends: 4929 [2022-01-18 13:24:14,915 INFO L226 Difference]: Without dead ends: 4797 [2022-01-18 13:24:14,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4832 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1870, Invalid=12172, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 13:24:14,917 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 874 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:14,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 3033 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2022-01-18 13:24:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 2279. [2022-01-18 13:24:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 2.89640035118525) internal successors, (6598), 2278 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 6598 transitions. [2022-01-18 13:24:14,949 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 6598 transitions. Word has length 70 [2022-01-18 13:24:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:14,949 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 6598 transitions. [2022-01-18 13:24:14,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 6598 transitions. [2022-01-18 13:24:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:14,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:14,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:14,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:15,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:15,156 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 54048609, now seen corresponding path program 42 times [2022-01-18 13:24:15,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:15,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824882464] [2022-01-18 13:24:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:15,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:15,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:15,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824882464] [2022-01-18 13:24:15,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824882464] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:15,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627089663] [2022-01-18 13:24:15,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:24:15,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:15,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:15,278 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:15,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 13:24:15,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:24:15,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:15,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:24:15,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:15,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:15,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627089663] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:15,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:15,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:24:15,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948065645] [2022-01-18 13:24:15,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:15,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:24:15,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:24:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:24:15,951 INFO L87 Difference]: Start difference. First operand 2279 states and 6598 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:16,733 INFO L93 Difference]: Finished difference Result 2897 states and 8239 transitions. [2022-01-18 13:24:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:24:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:16,737 INFO L225 Difference]: With dead ends: 2897 [2022-01-18 13:24:16,737 INFO L226 Difference]: Without dead ends: 2756 [2022-01-18 13:24:16,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 13:24:16,738 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 663 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:16,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 2472 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-01-18 13:24:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2183. [2022-01-18 13:24:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2182 states have (on average 2.8900091659028413) internal successors, (6306), 2182 states have internal predecessors, (6306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 6306 transitions. [2022-01-18 13:24:16,762 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 6306 transitions. Word has length 70 [2022-01-18 13:24:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:16,762 INFO L470 AbstractCegarLoop]: Abstraction has 2183 states and 6306 transitions. [2022-01-18 13:24:16,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 6306 transitions. [2022-01-18 13:24:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:16,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:16,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:16,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:16,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:16,980 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:16,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2133956963, now seen corresponding path program 43 times [2022-01-18 13:24:16,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:16,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817129193] [2022-01-18 13:24:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:16,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:17,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817129193] [2022-01-18 13:24:17,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817129193] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601713348] [2022-01-18 13:24:17,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:24:17,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:17,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:17,113 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:17,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 13:24:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:17,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:17,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:17,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:17,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601713348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:17,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:17,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:17,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556469462] [2022-01-18 13:24:17,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:17,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:17,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:17,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:17,994 INFO L87 Difference]: Start difference. First operand 2183 states and 6306 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:19,384 INFO L93 Difference]: Finished difference Result 4598 states and 13080 transitions. [2022-01-18 13:24:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 13:24:19,384 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:19,391 INFO L225 Difference]: With dead ends: 4598 [2022-01-18 13:24:19,391 INFO L226 Difference]: Without dead ends: 4523 [2022-01-18 13:24:19,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1064, Invalid=5908, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 13:24:19,392 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 689 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:19,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 2941 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:24:19,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2022-01-18 13:24:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 2247. [2022-01-18 13:24:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 2.885574354407836) internal successors, (6481), 2246 states have internal predecessors, (6481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 6481 transitions. [2022-01-18 13:24:19,427 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 6481 transitions. Word has length 70 [2022-01-18 13:24:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:19,428 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 6481 transitions. [2022-01-18 13:24:19,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 6481 transitions. [2022-01-18 13:24:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:19,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:19,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:19,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:19,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-01-18 13:24:19,643 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash 548986269, now seen corresponding path program 44 times [2022-01-18 13:24:19,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:19,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060511950] [2022-01-18 13:24:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:19,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:19,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:19,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060511950] [2022-01-18 13:24:19,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060511950] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:19,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956294702] [2022-01-18 13:24:19,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:24:19,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:19,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:19,827 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:19,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 13:24:19,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:24:19,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:19,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:19,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:20,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:20,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956294702] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:20,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:20,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:20,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923841443] [2022-01-18 13:24:20,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:20,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:20,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:20,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:20,629 INFO L87 Difference]: Start difference. First operand 2247 states and 6481 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:22,245 INFO L93 Difference]: Finished difference Result 4388 states and 12581 transitions. [2022-01-18 13:24:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 13:24:22,245 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:22,251 INFO L225 Difference]: With dead ends: 4388 [2022-01-18 13:24:22,251 INFO L226 Difference]: Without dead ends: 4248 [2022-01-18 13:24:22,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1073, Invalid=6237, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 13:24:22,252 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 646 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 3006 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:22,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 3006 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2022-01-18 13:24:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 2267. [2022-01-18 13:24:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 2.88261253309797) internal successors, (6532), 2266 states have internal predecessors, (6532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 6532 transitions. [2022-01-18 13:24:22,282 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 6532 transitions. Word has length 70 [2022-01-18 13:24:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:22,282 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 6532 transitions. [2022-01-18 13:24:22,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:22,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 6532 transitions. [2022-01-18 13:24:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:22,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:22,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:22,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:22,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:22,499 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -737622677, now seen corresponding path program 45 times [2022-01-18 13:24:22,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:22,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460778302] [2022-01-18 13:24:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:22,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:22,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:22,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460778302] [2022-01-18 13:24:22,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460778302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:22,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851671239] [2022-01-18 13:24:22,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:24:22,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:22,635 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:22,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 13:24:22,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:24:22,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:22,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:22,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:23,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:23,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851671239] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:23,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:23,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:23,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575480365] [2022-01-18 13:24:23,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:23,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:23,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:23,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:23,513 INFO L87 Difference]: Start difference. First operand 2267 states and 6532 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:25,673 INFO L93 Difference]: Finished difference Result 4685 states and 13369 transitions. [2022-01-18 13:24:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 13:24:25,673 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:25,680 INFO L225 Difference]: With dead ends: 4685 [2022-01-18 13:24:25,680 INFO L226 Difference]: Without dead ends: 4553 [2022-01-18 13:24:25,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4133 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1639, Invalid=10351, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 13:24:25,681 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 881 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:25,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 2960 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-01-18 13:24:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 2239. [2022-01-18 13:24:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2238 states have (on average 2.884271671134942) internal successors, (6455), 2238 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 6455 transitions. [2022-01-18 13:24:25,726 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 6455 transitions. Word has length 70 [2022-01-18 13:24:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:25,727 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 6455 transitions. [2022-01-18 13:24:25,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 6455 transitions. [2022-01-18 13:24:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:25,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:25,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:25,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 13:24:25,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-18 13:24:25,944 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:25,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2116663633, now seen corresponding path program 46 times [2022-01-18 13:24:25,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:25,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596175150] [2022-01-18 13:24:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:25,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:26,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:26,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596175150] [2022-01-18 13:24:26,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596175150] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:26,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946950578] [2022-01-18 13:24:26,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:24:26,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:26,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:26,067 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:26,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 13:24:26,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:24:26,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:26,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:24:26,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:26,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:26,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946950578] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:26,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:26,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:24:26,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175935766] [2022-01-18 13:24:26,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:26,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:24:26,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:26,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:24:26,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:24:26,562 INFO L87 Difference]: Start difference. First operand 2239 states and 6455 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:27,170 INFO L93 Difference]: Finished difference Result 3694 states and 10488 transitions. [2022-01-18 13:24:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:24:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:27,175 INFO L225 Difference]: With dead ends: 3694 [2022-01-18 13:24:27,175 INFO L226 Difference]: Without dead ends: 3583 [2022-01-18 13:24:27,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=420, Invalid=3002, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:24:27,175 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 470 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:27,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 3531 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:27,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-01-18 13:24:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2261. [2022-01-18 13:24:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.8809734513274337) internal successors, (6511), 2260 states have internal predecessors, (6511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 6511 transitions. [2022-01-18 13:24:27,222 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 6511 transitions. Word has length 70 [2022-01-18 13:24:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:27,223 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 6511 transitions. [2022-01-18 13:24:27,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 6511 transitions. [2022-01-18 13:24:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:27,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:27,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:27,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:27,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:27,439 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:27,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:27,440 INFO L85 PathProgramCache]: Analyzing trace with hash 739689287, now seen corresponding path program 47 times [2022-01-18 13:24:27,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:27,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057960494] [2022-01-18 13:24:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:27,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:27,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:27,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057960494] [2022-01-18 13:24:27,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057960494] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:27,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557514872] [2022-01-18 13:24:27,547 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:24:27,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:27,560 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:27,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 13:24:27,659 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:24:27,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:27,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:24:27,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:27,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:28,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557514872] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:28,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:28,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:24:28,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588899138] [2022-01-18 13:24:28,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:28,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:24:28,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:24:28,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:24:28,333 INFO L87 Difference]: Start difference. First operand 2261 states and 6511 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:28,993 INFO L93 Difference]: Finished difference Result 2798 states and 7920 transitions. [2022-01-18 13:24:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:24:28,994 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:28,997 INFO L225 Difference]: With dead ends: 2798 [2022-01-18 13:24:28,997 INFO L226 Difference]: Without dead ends: 2657 [2022-01-18 13:24:28,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=473, Invalid=3187, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:24:28,997 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 642 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:28,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 2422 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-01-18 13:24:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2257. [2022-01-18 13:24:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 2.870567375886525) internal successors, (6476), 2256 states have internal predecessors, (6476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 6476 transitions. [2022-01-18 13:24:29,020 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 6476 transitions. Word has length 70 [2022-01-18 13:24:29,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:29,021 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 6476 transitions. [2022-01-18 13:24:29,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 6476 transitions. [2022-01-18 13:24:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:29,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:29,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:29,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-01-18 13:24:29,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:29,238 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:29,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1789143841, now seen corresponding path program 48 times [2022-01-18 13:24:29,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:29,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266243306] [2022-01-18 13:24:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:29,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:29,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:29,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266243306] [2022-01-18 13:24:29,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266243306] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:29,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682502906] [2022-01-18 13:24:29,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:24:29,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:29,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:29,401 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:29,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 13:24:29,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:24:29,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:29,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:29,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:29,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:30,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682502906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:30,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:30,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:30,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697866859] [2022-01-18 13:24:30,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:30,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:30,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:30,296 INFO L87 Difference]: Start difference. First operand 2257 states and 6476 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:31,923 INFO L93 Difference]: Finished difference Result 4626 states and 12971 transitions. [2022-01-18 13:24:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 13:24:31,924 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:31,930 INFO L225 Difference]: With dead ends: 4626 [2022-01-18 13:24:31,931 INFO L226 Difference]: Without dead ends: 4327 [2022-01-18 13:24:31,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=892, Invalid=6590, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 13:24:31,932 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1051 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:31,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 2366 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-01-18 13:24:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 2221. [2022-01-18 13:24:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2220 states have (on average 2.7882882882882885) internal successors, (6190), 2220 states have internal predecessors, (6190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 6190 transitions. [2022-01-18 13:24:31,965 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 6190 transitions. Word has length 70 [2022-01-18 13:24:31,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:31,965 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 6190 transitions. [2022-01-18 13:24:31,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 6190 transitions. [2022-01-18 13:24:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:31,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:31,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:31,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-18 13:24:32,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:32,183 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:32,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1345581259, now seen corresponding path program 49 times [2022-01-18 13:24:32,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:32,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497425232] [2022-01-18 13:24:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:32,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:32,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:32,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497425232] [2022-01-18 13:24:32,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497425232] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:32,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024992813] [2022-01-18 13:24:32,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:24:32,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:32,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:32,331 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:32,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 13:24:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:32,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:32,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:32,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:33,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024992813] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:33,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:33,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:33,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855940405] [2022-01-18 13:24:33,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:33,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:33,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:33,250 INFO L87 Difference]: Start difference. First operand 2221 states and 6190 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:34,183 INFO L93 Difference]: Finished difference Result 3277 states and 9055 transitions. [2022-01-18 13:24:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:24:34,183 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:34,186 INFO L225 Difference]: With dead ends: 3277 [2022-01-18 13:24:34,187 INFO L226 Difference]: Without dead ends: 3130 [2022-01-18 13:24:34,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=753, Invalid=4359, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 13:24:34,187 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 433 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:34,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1947 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2022-01-18 13:24:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2269. [2022-01-18 13:24:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2268 states have (on average 2.7874779541446206) internal successors, (6322), 2268 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 6322 transitions. [2022-01-18 13:24:34,215 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 6322 transitions. Word has length 70 [2022-01-18 13:24:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:34,215 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 6322 transitions. [2022-01-18 13:24:34,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 6322 transitions. [2022-01-18 13:24:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:34,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:34,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:34,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:34,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:34,432 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash -424984627, now seen corresponding path program 50 times [2022-01-18 13:24:34,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:34,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645270813] [2022-01-18 13:24:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:34,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:34,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:34,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645270813] [2022-01-18 13:24:34,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645270813] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:34,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271032806] [2022-01-18 13:24:34,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:24:34,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:34,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:34,548 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:34,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 13:24:34,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:24:34,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:34,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:34,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:34,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:35,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271032806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:35,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:35,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:35,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083100439] [2022-01-18 13:24:35,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:35,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:35,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:35,225 INFO L87 Difference]: Start difference. First operand 2269 states and 6322 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:36,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:36,133 INFO L93 Difference]: Finished difference Result 3297 states and 9110 transitions. [2022-01-18 13:24:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 13:24:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:36,137 INFO L225 Difference]: With dead ends: 3297 [2022-01-18 13:24:36,137 INFO L226 Difference]: Without dead ends: 3222 [2022-01-18 13:24:36,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=802, Invalid=4454, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 13:24:36,138 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 408 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:36,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 2178 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-01-18 13:24:36,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2273. [2022-01-18 13:24:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2272 states have (on average 2.787411971830986) internal successors, (6333), 2272 states have internal predecessors, (6333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 6333 transitions. [2022-01-18 13:24:36,162 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 6333 transitions. Word has length 70 [2022-01-18 13:24:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:36,163 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 6333 transitions. [2022-01-18 13:24:36,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 6333 transitions. [2022-01-18 13:24:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:36,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:36,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:36,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:36,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-01-18 13:24:36,380 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1523233091, now seen corresponding path program 51 times [2022-01-18 13:24:36,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:36,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696107303] [2022-01-18 13:24:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:36,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:36,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696107303] [2022-01-18 13:24:36,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696107303] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034566809] [2022-01-18 13:24:36,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:24:36,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:36,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:36,492 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:36,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 13:24:36,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:24:36,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:36,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:36,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:36,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:37,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034566809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:37,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:37,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:24:37,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477588790] [2022-01-18 13:24:37,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:37,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:24:37,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:37,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:24:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:24:37,197 INFO L87 Difference]: Start difference. First operand 2273 states and 6333 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:39,040 INFO L93 Difference]: Finished difference Result 3789 states and 10531 transitions. [2022-01-18 13:24:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 13:24:39,040 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:39,045 INFO L225 Difference]: With dead ends: 3789 [2022-01-18 13:24:39,045 INFO L226 Difference]: Without dead ends: 3714 [2022-01-18 13:24:39,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3506 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1972, Invalid=9158, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 13:24:39,046 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 524 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:39,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 2302 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2022-01-18 13:24:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 2297. [2022-01-18 13:24:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 2.7905052264808363) internal successors, (6407), 2296 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 6407 transitions. [2022-01-18 13:24:39,121 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 6407 transitions. Word has length 70 [2022-01-18 13:24:39,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:39,121 INFO L470 AbstractCegarLoop]: Abstraction has 2297 states and 6407 transitions. [2022-01-18 13:24:39,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 6407 transitions. [2022-01-18 13:24:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:39,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:39,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:39,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:39,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:39,333 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:39,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash 719292939, now seen corresponding path program 52 times [2022-01-18 13:24:39,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:39,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771882337] [2022-01-18 13:24:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:39,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:39,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:39,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771882337] [2022-01-18 13:24:39,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771882337] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:39,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823798855] [2022-01-18 13:24:39,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:24:39,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:39,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:39,474 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:39,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 13:24:39,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:24:39,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:39,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 13:24:39,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:39,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:40,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823798855] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:40,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:40,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-01-18 13:24:40,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883305826] [2022-01-18 13:24:40,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:40,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 13:24:40,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:40,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 13:24:40,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2022-01-18 13:24:40,176 INFO L87 Difference]: Start difference. First operand 2297 states and 6407 transitions. Second operand has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:41,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:41,207 INFO L93 Difference]: Finished difference Result 3673 states and 9986 transitions. [2022-01-18 13:24:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:24:41,208 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:41,213 INFO L225 Difference]: With dead ends: 3673 [2022-01-18 13:24:41,213 INFO L226 Difference]: Without dead ends: 3514 [2022-01-18 13:24:41,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=621, Invalid=3411, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 13:24:41,214 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 403 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:41,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 2049 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:24:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-01-18 13:24:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 2361. [2022-01-18 13:24:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 2360 states have (on average 2.791101694915254) internal successors, (6587), 2360 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 6587 transitions. [2022-01-18 13:24:41,243 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 6587 transitions. Word has length 70 [2022-01-18 13:24:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:41,243 INFO L470 AbstractCegarLoop]: Abstraction has 2361 states and 6587 transitions. [2022-01-18 13:24:41,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 6587 transitions. [2022-01-18 13:24:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:41,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:41,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:41,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:41,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-01-18 13:24:41,450 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1639889571, now seen corresponding path program 53 times [2022-01-18 13:24:41,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:41,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536981833] [2022-01-18 13:24:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:41,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:41,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:41,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536981833] [2022-01-18 13:24:41,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536981833] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:41,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803369813] [2022-01-18 13:24:41,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:24:41,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:41,577 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:41,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 13:24:41,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:24:41,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:41,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:41,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:41,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:42,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803369813] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:42,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:42,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 13:24:42,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488922557] [2022-01-18 13:24:42,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:42,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 13:24:42,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 13:24:42,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 13:24:42,295 INFO L87 Difference]: Start difference. First operand 2361 states and 6587 transitions. Second operand has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:43,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:43,975 INFO L93 Difference]: Finished difference Result 4433 states and 12291 transitions. [2022-01-18 13:24:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 13:24:43,975 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:43,981 INFO L225 Difference]: With dead ends: 4433 [2022-01-18 13:24:43,981 INFO L226 Difference]: Without dead ends: 4295 [2022-01-18 13:24:43,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1255, Invalid=7675, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 13:24:43,983 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 509 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:43,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 3126 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:24:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2022-01-18 13:24:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 2541. [2022-01-18 13:24:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2540 states have (on average 2.8039370078740156) internal successors, (7122), 2540 states have internal predecessors, (7122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 7122 transitions. [2022-01-18 13:24:44,018 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 7122 transitions. Word has length 70 [2022-01-18 13:24:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:44,018 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 7122 transitions. [2022-01-18 13:24:44,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 7122 transitions. [2022-01-18 13:24:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:44,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:44,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:44,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:44,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:44,234 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:44,234 INFO L85 PathProgramCache]: Analyzing trace with hash 603585821, now seen corresponding path program 54 times [2022-01-18 13:24:44,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:44,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051954708] [2022-01-18 13:24:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:44,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:44,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:44,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051954708] [2022-01-18 13:24:44,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051954708] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:44,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889879613] [2022-01-18 13:24:44,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:24:44,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:44,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:44,357 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:44,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 13:24:44,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:24:44,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:44,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:44,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:44,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:45,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889879613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:45,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:45,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-01-18 13:24:45,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52260480] [2022-01-18 13:24:45,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:45,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 13:24:45,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:45,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 13:24:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:24:45,220 INFO L87 Difference]: Start difference. First operand 2541 states and 7122 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:49,101 INFO L93 Difference]: Finished difference Result 5151 states and 14441 transitions. [2022-01-18 13:24:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-18 13:24:49,101 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:49,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:49,108 INFO L225 Difference]: With dead ends: 5151 [2022-01-18 13:24:49,108 INFO L226 Difference]: Without dead ends: 5076 [2022-01-18 13:24:49,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2496, Invalid=14796, Unknown=0, NotChecked=0, Total=17292 [2022-01-18 13:24:49,110 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 694 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:49,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 2379 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2022-01-18 13:24:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 2677. [2022-01-18 13:24:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2676 states have (on average 2.828101644245142) internal successors, (7568), 2676 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 7568 transitions. [2022-01-18 13:24:49,166 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 7568 transitions. Word has length 70 [2022-01-18 13:24:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:49,166 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 7568 transitions. [2022-01-18 13:24:49,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 7568 transitions. [2022-01-18 13:24:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:49,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:49,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:49,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:49,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:49,379 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1601492827, now seen corresponding path program 55 times [2022-01-18 13:24:49,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:49,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536848334] [2022-01-18 13:24:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:49,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:49,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:49,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536848334] [2022-01-18 13:24:49,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536848334] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:49,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346387059] [2022-01-18 13:24:49,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:24:49,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:49,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:49,483 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:49,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 13:24:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:49,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:49,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:49,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:50,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346387059] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:50,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:50,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-01-18 13:24:50,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343764425] [2022-01-18 13:24:50,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:50,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 13:24:50,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:50,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 13:24:50,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:24:50,102 INFO L87 Difference]: Start difference. First operand 2677 states and 7568 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:52,362 INFO L93 Difference]: Finished difference Result 5030 states and 14106 transitions. [2022-01-18 13:24:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 13:24:52,362 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:52,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:52,370 INFO L225 Difference]: With dead ends: 5030 [2022-01-18 13:24:52,370 INFO L226 Difference]: Without dead ends: 4941 [2022-01-18 13:24:52,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3617 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1555, Invalid=9575, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 13:24:52,371 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 640 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:52,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 2529 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:24:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2022-01-18 13:24:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 3061. [2022-01-18 13:24:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3060 states have (on average 2.8705882352941177) internal successors, (8784), 3060 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:52,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 8784 transitions. [2022-01-18 13:24:52,422 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 8784 transitions. Word has length 70 [2022-01-18 13:24:52,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:52,423 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 8784 transitions. [2022-01-18 13:24:52,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 8784 transitions. [2022-01-18 13:24:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:52,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:52,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:52,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:52,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:52,643 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:52,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash 541641107, now seen corresponding path program 56 times [2022-01-18 13:24:52,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:52,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646544940] [2022-01-18 13:24:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:52,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:52,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646544940] [2022-01-18 13:24:52,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646544940] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374792566] [2022-01-18 13:24:52,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:24:52,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:52,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:52,823 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:52,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 13:24:52,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:24:52,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:52,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:52,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:53,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:24:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:53,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374792566] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:24:53,778 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:24:53,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-01-18 13:24:53,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830675024] [2022-01-18 13:24:53,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:24:53,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 13:24:53,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:53,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 13:24:53,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:24:53,779 INFO L87 Difference]: Start difference. First operand 3061 states and 8784 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:59,179 INFO L93 Difference]: Finished difference Result 5152 states and 14487 transitions. [2022-01-18 13:24:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-18 13:24:59,180 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:24:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:59,190 INFO L225 Difference]: With dead ends: 5152 [2022-01-18 13:24:59,190 INFO L226 Difference]: Without dead ends: 5077 [2022-01-18 13:24:59,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8367 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3445, Invalid=19205, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 13:24:59,192 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 687 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:59,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 2605 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-01-18 13:24:59,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 3069. [2022-01-18 13:24:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 2.8715775749674055) internal successors, (8810), 3068 states have internal predecessors, (8810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 8810 transitions. [2022-01-18 13:24:59,269 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 8810 transitions. Word has length 70 [2022-01-18 13:24:59,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:59,269 INFO L470 AbstractCegarLoop]: Abstraction has 3069 states and 8810 transitions. [2022-01-18 13:24:59,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 8810 transitions. [2022-01-18 13:24:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:24:59,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:59,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:59,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 13:24:59,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:59,476 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash -494662643, now seen corresponding path program 57 times [2022-01-18 13:24:59,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:59,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847740017] [2022-01-18 13:24:59,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:59,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:59,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:59,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847740017] [2022-01-18 13:24:59,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847740017] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:24:59,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047271892] [2022-01-18 13:24:59,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:24:59,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:24:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:24:59,579 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:24:59,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 13:24:59,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:24:59,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:24:59,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:24:59,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:24:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:59,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:00,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047271892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:00,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:00,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-01-18 13:25:00,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276769227] [2022-01-18 13:25:00,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:00,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 13:25:00,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:00,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 13:25:00,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:25:00,164 INFO L87 Difference]: Start difference. First operand 3069 states and 8810 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:06,773 INFO L93 Difference]: Finished difference Result 5557 states and 15617 transitions. [2022-01-18 13:25:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 13:25:06,773 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:06,781 INFO L225 Difference]: With dead ends: 5557 [2022-01-18 13:25:06,781 INFO L226 Difference]: Without dead ends: 5482 [2022-01-18 13:25:06,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11280 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4217, Invalid=25195, Unknown=0, NotChecked=0, Total=29412 [2022-01-18 13:25:06,783 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 869 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:06,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 2941 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2022-01-18 13:25:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 3109. [2022-01-18 13:25:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.873873873873874) internal successors, (8932), 3108 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8932 transitions. [2022-01-18 13:25:06,834 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8932 transitions. Word has length 70 [2022-01-18 13:25:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:06,835 INFO L470 AbstractCegarLoop]: Abstraction has 3109 states and 8932 transitions. [2022-01-18 13:25:06,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8932 transitions. [2022-01-18 13:25:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:06,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:06,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:06,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:07,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-01-18 13:25:07,053 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash 503244363, now seen corresponding path program 58 times [2022-01-18 13:25:07,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:07,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076860551] [2022-01-18 13:25:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:07,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:07,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:07,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076860551] [2022-01-18 13:25:07,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076860551] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:07,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282058133] [2022-01-18 13:25:07,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:25:07,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:07,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:07,177 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:07,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 13:25:07,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:25:07,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:07,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 13:25:07,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:07,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:07,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282058133] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:07,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:07,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-01-18 13:25:07,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213603303] [2022-01-18 13:25:07,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:07,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 13:25:07,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:07,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 13:25:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-01-18 13:25:07,791 INFO L87 Difference]: Start difference. First operand 3109 states and 8932 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:11,445 INFO L93 Difference]: Finished difference Result 6141 states and 17233 transitions. [2022-01-18 13:25:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-18 13:25:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:11,454 INFO L225 Difference]: With dead ends: 6141 [2022-01-18 13:25:11,454 INFO L226 Difference]: Without dead ends: 6011 [2022-01-18 13:25:11,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2733, Invalid=15357, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 13:25:11,456 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 780 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:11,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 2365 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2022-01-18 13:25:11,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3721. [2022-01-18 13:25:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 2.9115591397849463) internal successors, (10831), 3720 states have internal predecessors, (10831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 10831 transitions. [2022-01-18 13:25:11,523 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 10831 transitions. Word has length 70 [2022-01-18 13:25:11,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:11,524 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 10831 transitions. [2022-01-18 13:25:11,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:11,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 10831 transitions. [2022-01-18 13:25:11,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:11,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:11,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:11,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:11,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:11,746 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1460351023, now seen corresponding path program 59 times [2022-01-18 13:25:11,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:11,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744773211] [2022-01-18 13:25:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:11,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:11,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:11,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744773211] [2022-01-18 13:25:11,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744773211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:11,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692293447] [2022-01-18 13:25:11,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:25:11,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:11,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:11,879 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:11,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 13:25:11,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:25:11,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:11,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:25:11,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:12,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:12,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692293447] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:12,600 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:12,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:25:12,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990650343] [2022-01-18 13:25:12,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:12,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:25:12,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:12,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:25:12,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:25:12,601 INFO L87 Difference]: Start difference. First operand 3721 states and 10831 transitions. Second operand has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:14,975 INFO L93 Difference]: Finished difference Result 5228 states and 15055 transitions. [2022-01-18 13:25:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 13:25:14,976 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:14,987 INFO L225 Difference]: With dead ends: 5228 [2022-01-18 13:25:14,987 INFO L226 Difference]: Without dead ends: 5121 [2022-01-18 13:25:14,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6140 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2789, Invalid=15033, Unknown=0, NotChecked=0, Total=17822 [2022-01-18 13:25:14,990 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 777 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:14,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 2764 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2022-01-18 13:25:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 3585. [2022-01-18 13:25:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 2.914341517857143) internal successors, (10445), 3584 states have internal predecessors, (10445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 10445 transitions. [2022-01-18 13:25:15,058 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 10445 transitions. Word has length 70 [2022-01-18 13:25:15,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:15,058 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 10445 transitions. [2022-01-18 13:25:15,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:15,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 10445 transitions. [2022-01-18 13:25:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:15,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:15,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:15,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:15,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:15,266 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash -462444017, now seen corresponding path program 60 times [2022-01-18 13:25:15,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:15,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939368798] [2022-01-18 13:25:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:15,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:15,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:15,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939368798] [2022-01-18 13:25:15,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939368798] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:15,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333929278] [2022-01-18 13:25:15,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:25:15,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:15,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:15,408 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:15,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 13:25:15,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:25:15,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:15,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:25:15,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:15,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:16,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333929278] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:16,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:16,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-01-18 13:25:16,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161859377] [2022-01-18 13:25:16,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:16,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 13:25:16,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 13:25:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:25:16,442 INFO L87 Difference]: Start difference. First operand 3585 states and 10445 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:23,526 INFO L93 Difference]: Finished difference Result 7128 states and 20475 transitions. [2022-01-18 13:25:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-01-18 13:25:23,526 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:23,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:23,539 INFO L225 Difference]: With dead ends: 7128 [2022-01-18 13:25:23,540 INFO L226 Difference]: Without dead ends: 7039 [2022-01-18 13:25:23,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11748 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4597, Invalid=26203, Unknown=0, NotChecked=0, Total=30800 [2022-01-18 13:25:23,546 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 892 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:23,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 3164 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:25:23,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2022-01-18 13:25:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 4073. [2022-01-18 13:25:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 4072 states have (on average 2.951620825147348) internal successors, (12019), 4072 states have internal predecessors, (12019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 12019 transitions. [2022-01-18 13:25:23,619 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 12019 transitions. Word has length 70 [2022-01-18 13:25:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:23,620 INFO L470 AbstractCegarLoop]: Abstraction has 4073 states and 12019 transitions. [2022-01-18 13:25:23,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 12019 transitions. [2022-01-18 13:25:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:23,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:23,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:23,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:23,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:23,841 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:23,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1519589779, now seen corresponding path program 61 times [2022-01-18 13:25:23,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:23,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096907633] [2022-01-18 13:25:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:23,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:23,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:23,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096907633] [2022-01-18 13:25:23,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096907633] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:23,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420936492] [2022-01-18 13:25:23,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:25:23,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:23,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:23,997 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:23,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 13:25:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:24,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:25:24,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:24,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:24,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420936492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:24,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:24,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-01-18 13:25:24,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475565938] [2022-01-18 13:25:24,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:24,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 13:25:24,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:24,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 13:25:24,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:25:24,847 INFO L87 Difference]: Start difference. First operand 4073 states and 12019 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:30,803 INFO L93 Difference]: Finished difference Result 7825 states and 22614 transitions. [2022-01-18 13:25:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-18 13:25:30,807 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:30,823 INFO L225 Difference]: With dead ends: 7825 [2022-01-18 13:25:30,823 INFO L226 Difference]: Without dead ends: 7649 [2022-01-18 13:25:30,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10620 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4477, Invalid=22255, Unknown=0, NotChecked=0, Total=26732 [2022-01-18 13:25:30,839 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1079 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:30,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 2645 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2022-01-18 13:25:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 4581. [2022-01-18 13:25:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4580 states have (on average 2.992139737991266) internal successors, (13704), 4580 states have internal predecessors, (13704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 13704 transitions. [2022-01-18 13:25:30,936 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 13704 transitions. Word has length 70 [2022-01-18 13:25:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:30,936 INFO L470 AbstractCegarLoop]: Abstraction has 4581 states and 13704 transitions. [2022-01-18 13:25:30,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 13704 transitions. [2022-01-18 13:25:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:30,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:30,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:30,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-01-18 13:25:31,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:31,156 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash -570575051, now seen corresponding path program 62 times [2022-01-18 13:25:31,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:31,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087282363] [2022-01-18 13:25:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:31,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:31,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:31,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087282363] [2022-01-18 13:25:31,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087282363] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:31,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606719393] [2022-01-18 13:25:31,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:25:31,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:31,351 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:31,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 13:25:31,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:25:31,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:31,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:25:31,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:31,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:32,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606719393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:32,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:32,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2022-01-18 13:25:32,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966232974] [2022-01-18 13:25:32,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:32,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 13:25:32,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:32,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 13:25:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2022-01-18 13:25:32,410 INFO L87 Difference]: Start difference. First operand 4581 states and 13704 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:34,565 INFO L93 Difference]: Finished difference Result 5971 states and 17267 transitions. [2022-01-18 13:25:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 13:25:34,566 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:34,575 INFO L225 Difference]: With dead ends: 5971 [2022-01-18 13:25:34,575 INFO L226 Difference]: Without dead ends: 5812 [2022-01-18 13:25:34,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=925, Invalid=6385, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 13:25:34,576 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 698 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:34,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 2256 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:34,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2022-01-18 13:25:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4725. [2022-01-18 13:25:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4724 states have (on average 2.988145639288738) internal successors, (14116), 4724 states have internal predecessors, (14116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 14116 transitions. [2022-01-18 13:25:34,638 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 14116 transitions. Word has length 70 [2022-01-18 13:25:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:34,638 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 14116 transitions. [2022-01-18 13:25:34,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 14116 transitions. [2022-01-18 13:25:34,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:34,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:34,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:34,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 13:25:34,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:34,859 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:34,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:34,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1033019655, now seen corresponding path program 63 times [2022-01-18 13:25:34,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:34,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184132715] [2022-01-18 13:25:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:34,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:34,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:34,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184132715] [2022-01-18 13:25:34,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184132715] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:34,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528791515] [2022-01-18 13:25:34,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:25:34,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:34,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:34,985 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:34,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 13:25:35,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:25:35,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:35,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:25:35,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:35,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:35,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528791515] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:35,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:35,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2022-01-18 13:25:35,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538254219] [2022-01-18 13:25:35,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:35,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 13:25:35,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 13:25:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-01-18 13:25:35,883 INFO L87 Difference]: Start difference. First operand 4725 states and 14116 transitions. Second operand has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:39,070 INFO L93 Difference]: Finished difference Result 5987 states and 17326 transitions. [2022-01-18 13:25:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 13:25:39,071 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:39,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:39,090 INFO L225 Difference]: With dead ends: 5987 [2022-01-18 13:25:39,090 INFO L226 Difference]: Without dead ends: 5789 [2022-01-18 13:25:39,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 121 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2878 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1147, Invalid=7783, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 13:25:39,091 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 595 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:39,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 2788 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2022-01-18 13:25:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 4749. [2022-01-18 13:25:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.9869418702611625) internal successors, (14182), 4748 states have internal predecessors, (14182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14182 transitions. [2022-01-18 13:25:39,182 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14182 transitions. Word has length 70 [2022-01-18 13:25:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:39,182 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14182 transitions. [2022-01-18 13:25:39,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14182 transitions. [2022-01-18 13:25:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:39,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:39,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:39,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:39,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-01-18 13:25:39,412 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1148726773, now seen corresponding path program 64 times [2022-01-18 13:25:39,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:39,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584115757] [2022-01-18 13:25:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:39,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:39,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:39,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584115757] [2022-01-18 13:25:39,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584115757] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:39,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229651739] [2022-01-18 13:25:39,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:25:39,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:39,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:39,533 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:39,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 13:25:39,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:25:39,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:39,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 13:25:39,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:39,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:40,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229651739] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:40,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:40,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 28 [2022-01-18 13:25:40,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069138965] [2022-01-18 13:25:40,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:40,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 13:25:40,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 13:25:40,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2022-01-18 13:25:40,162 INFO L87 Difference]: Start difference. First operand 4749 states and 14182 transitions. Second operand has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:41,011 INFO L93 Difference]: Finished difference Result 5657 states and 16347 transitions. [2022-01-18 13:25:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:25:41,011 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:41,019 INFO L225 Difference]: With dead ends: 5657 [2022-01-18 13:25:41,019 INFO L226 Difference]: Without dead ends: 5558 [2022-01-18 13:25:41,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=562, Invalid=2518, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:25:41,020 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 573 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:41,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1935 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:25:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2022-01-18 13:25:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 4749. [2022-01-18 13:25:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.98441449031171) internal successors, (14170), 4748 states have internal predecessors, (14170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14170 transitions. [2022-01-18 13:25:41,084 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14170 transitions. Word has length 70 [2022-01-18 13:25:41,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:41,084 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14170 transitions. [2022-01-18 13:25:41,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14170 transitions. [2022-01-18 13:25:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:41,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:41,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:41,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-01-18 13:25:41,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:41,293 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash -150819767, now seen corresponding path program 65 times [2022-01-18 13:25:41,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:41,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287933688] [2022-01-18 13:25:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:41,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:41,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:41,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287933688] [2022-01-18 13:25:41,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287933688] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:41,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806686207] [2022-01-18 13:25:41,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:25:41,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:41,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:41,415 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:41,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 13:25:41,499 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:25:41,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:41,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:25:41,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:41,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:41,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:25:41,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806686207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:41,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 13:25:41,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-01-18 13:25:41,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801469799] [2022-01-18 13:25:41,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:41,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 13:25:41,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 13:25:41,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-01-18 13:25:41,723 INFO L87 Difference]: Start difference. First operand 4749 states and 14170 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:41,834 INFO L93 Difference]: Finished difference Result 4859 states and 14422 transitions. [2022-01-18 13:25:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 13:25:41,834 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:41,840 INFO L225 Difference]: With dead ends: 4859 [2022-01-18 13:25:41,840 INFO L226 Difference]: Without dead ends: 4781 [2022-01-18 13:25:41,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:25:41,841 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 119 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:41,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 948 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:25:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-01-18 13:25:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4713. [2022-01-18 13:25:41,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 2.9887521222410864) internal successors, (14083), 4712 states have internal predecessors, (14083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 14083 transitions. [2022-01-18 13:25:41,902 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 14083 transitions. Word has length 70 [2022-01-18 13:25:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:41,902 INFO L470 AbstractCegarLoop]: Abstraction has 4713 states and 14083 transitions. [2022-01-18 13:25:41,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 14083 transitions. [2022-01-18 13:25:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:41,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:41,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:41,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:42,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-01-18 13:25:42,110 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:42,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2046055433, now seen corresponding path program 66 times [2022-01-18 13:25:42,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:42,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855220003] [2022-01-18 13:25:42,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:42,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:42,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:42,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855220003] [2022-01-18 13:25:42,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855220003] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:42,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148985114] [2022-01-18 13:25:42,219 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:25:42,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:42,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:42,221 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:42,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 13:25:42,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:25:42,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:42,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:25:42,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:42,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:42,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148985114] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:42,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:42,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-01-18 13:25:42,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104013601] [2022-01-18 13:25:42,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:42,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 13:25:42,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:42,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 13:25:42,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:25:42,903 INFO L87 Difference]: Start difference. First operand 4713 states and 14083 transitions. Second operand has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:45,536 INFO L93 Difference]: Finished difference Result 7586 states and 22120 transitions. [2022-01-18 13:25:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 13:25:45,537 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:45,549 INFO L225 Difference]: With dead ends: 7586 [2022-01-18 13:25:45,549 INFO L226 Difference]: Without dead ends: 7511 [2022-01-18 13:25:45,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3698 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1697, Invalid=9223, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 13:25:45,550 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 512 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:45,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 2776 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:45,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2022-01-18 13:25:45,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 4793. [2022-01-18 13:25:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4793 states, 4792 states have (on average 2.9881051752921537) internal successors, (14319), 4792 states have internal predecessors, (14319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 14319 transitions. [2022-01-18 13:25:45,628 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 14319 transitions. Word has length 70 [2022-01-18 13:25:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:45,629 INFO L470 AbstractCegarLoop]: Abstraction has 4793 states and 14319 transitions. [2022-01-18 13:25:45,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 14319 transitions. [2022-01-18 13:25:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:45,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:45,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:45,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:45,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-01-18 13:25:45,851 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:45,852 INFO L85 PathProgramCache]: Analyzing trace with hash 461084739, now seen corresponding path program 67 times [2022-01-18 13:25:45,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:45,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922732879] [2022-01-18 13:25:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:45,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:45,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:45,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922732879] [2022-01-18 13:25:45,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922732879] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:45,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228719462] [2022-01-18 13:25:45,989 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:25:45,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:45,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:45,990 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:45,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 13:25:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:46,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:25:46,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:46,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:47,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228719462] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:47,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:47,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-01-18 13:25:47,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99412426] [2022-01-18 13:25:47,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:47,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 13:25:47,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:47,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 13:25:47,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:25:47,069 INFO L87 Difference]: Start difference. First operand 4793 states and 14319 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:50,562 INFO L93 Difference]: Finished difference Result 7564 states and 22088 transitions. [2022-01-18 13:25:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 13:25:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:50,574 INFO L225 Difference]: With dead ends: 7564 [2022-01-18 13:25:50,574 INFO L226 Difference]: Without dead ends: 7475 [2022-01-18 13:25:50,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1701, Invalid=9429, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 13:25:50,575 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 494 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:50,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 3608 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7475 states. [2022-01-18 13:25:50,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7475 to 4857. [2022-01-18 13:25:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 4856 states have (on average 2.985790774299835) internal successors, (14499), 4856 states have internal predecessors, (14499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 14499 transitions. [2022-01-18 13:25:50,657 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 14499 transitions. Word has length 70 [2022-01-18 13:25:50,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:50,657 INFO L470 AbstractCegarLoop]: Abstraction has 4857 states and 14499 transitions. [2022-01-18 13:25:50,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 14499 transitions. [2022-01-18 13:25:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:50,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:50,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:50,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:50,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-01-18 13:25:50,876 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash -825524207, now seen corresponding path program 68 times [2022-01-18 13:25:50,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715038821] [2022-01-18 13:25:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:50,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:51,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:51,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715038821] [2022-01-18 13:25:51,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715038821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:51,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770836557] [2022-01-18 13:25:51,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:25:51,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:51,008 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:51,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 13:25:51,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:25:51,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:51,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:25:51,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:51,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:52,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770836557] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:52,041 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:52,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-01-18 13:25:52,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822220486] [2022-01-18 13:25:52,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:52,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 13:25:52,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 13:25:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:25:52,042 INFO L87 Difference]: Start difference. First operand 4857 states and 14499 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:56,122 INFO L93 Difference]: Finished difference Result 8098 states and 23481 transitions. [2022-01-18 13:25:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 13:25:56,123 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:56,134 INFO L225 Difference]: With dead ends: 8098 [2022-01-18 13:25:56,135 INFO L226 Difference]: Without dead ends: 7875 [2022-01-18 13:25:56,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2252, Invalid=14778, Unknown=0, NotChecked=0, Total=17030 [2022-01-18 13:25:56,136 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 710 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:56,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 2759 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2022-01-18 13:25:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 4957. [2022-01-18 13:25:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4957 states, 4956 states have (on average 2.986682808716707) internal successors, (14802), 4956 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 14802 transitions. [2022-01-18 13:25:56,220 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 14802 transitions. Word has length 70 [2022-01-18 13:25:56,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:56,220 INFO L470 AbstractCegarLoop]: Abstraction has 4957 states and 14802 transitions. [2022-01-18 13:25:56,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:56,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 14802 transitions. [2022-01-18 13:25:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:56,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:56,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:56,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 13:25:56,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-01-18 13:25:56,443 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:56,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2090402133, now seen corresponding path program 69 times [2022-01-18 13:25:56,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:56,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176106397] [2022-01-18 13:25:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:56,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:56,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:56,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176106397] [2022-01-18 13:25:56,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176106397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:56,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764570024] [2022-01-18 13:25:56,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:25:56,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:56,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:56,603 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:56,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 13:25:56,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:25:56,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:56,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:25:56,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:25:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:57,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:25:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:57,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764570024] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:25:57,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:25:57,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 13:25:57,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498116262] [2022-01-18 13:25:57,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:25:57,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 13:25:57,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:57,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 13:25:57,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 13:25:57,407 INFO L87 Difference]: Start difference. First operand 4957 states and 14802 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:59,229 INFO L93 Difference]: Finished difference Result 7085 states and 20759 transitions. [2022-01-18 13:25:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 13:25:59,229 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:25:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:59,242 INFO L225 Difference]: With dead ends: 7085 [2022-01-18 13:25:59,243 INFO L226 Difference]: Without dead ends: 6906 [2022-01-18 13:25:59,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1168, Invalid=7762, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 13:25:59,244 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 498 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:59,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 2950 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2022-01-18 13:25:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 5181. [2022-01-18 13:25:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 2.9818532818532817) internal successors, (15446), 5180 states have internal predecessors, (15446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 15446 transitions. [2022-01-18 13:25:59,321 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 15446 transitions. Word has length 70 [2022-01-18 13:25:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:59,321 INFO L470 AbstractCegarLoop]: Abstraction has 5181 states and 15446 transitions. [2022-01-18 13:25:59,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 15446 transitions. [2022-01-18 13:25:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:25:59,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:59,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:59,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 13:25:59,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:59,543 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:59,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash 947581475, now seen corresponding path program 70 times [2022-01-18 13:25:59,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:59,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557276511] [2022-01-18 13:25:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:59,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:59,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:59,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557276511] [2022-01-18 13:25:59,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557276511] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:25:59,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482589216] [2022-01-18 13:25:59,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:25:59,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:25:59,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:25:59,692 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:25:59,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 13:25:59,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:25:59,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:25:59,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:25:59,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:00,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:00,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482589216] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:00,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:00,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:26:00,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218154599] [2022-01-18 13:26:00,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:00,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:00,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:00,512 INFO L87 Difference]: Start difference. First operand 5181 states and 15446 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:02,640 INFO L93 Difference]: Finished difference Result 7732 states and 22695 transitions. [2022-01-18 13:26:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 13:26:02,640 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:02,651 INFO L225 Difference]: With dead ends: 7732 [2022-01-18 13:26:02,651 INFO L226 Difference]: Without dead ends: 7605 [2022-01-18 13:26:02,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1641, Invalid=10569, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 13:26:02,652 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 681 mSDsluCounter, 3030 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:02,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 3064 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2022-01-18 13:26:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5229. [2022-01-18 13:26:02,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.9820198928844683) internal successors, (15590), 5228 states have internal predecessors, (15590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 15590 transitions. [2022-01-18 13:26:02,731 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 15590 transitions. Word has length 70 [2022-01-18 13:26:02,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:02,731 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 15590 transitions. [2022-01-18 13:26:02,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 15590 transitions. [2022-01-18 13:26:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:02,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:02,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:02,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 13:26:02,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 13:26:02,955 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:02,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:02,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1340787411, now seen corresponding path program 71 times [2022-01-18 13:26:02,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:02,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200245031] [2022-01-18 13:26:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:02,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:03,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200245031] [2022-01-18 13:26:03,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200245031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854773526] [2022-01-18 13:26:03,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:26:03,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:03,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:03,127 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:03,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 13:26:03,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:26:03,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:03,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:26:03,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:03,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:03,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854773526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:03,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:03,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:26:03,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719173110] [2022-01-18 13:26:03,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:03,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:03,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:03,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:03,792 INFO L87 Difference]: Start difference. First operand 5229 states and 15590 transitions. Second operand has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:04,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:04,523 INFO L93 Difference]: Finished difference Result 7120 states and 21026 transitions. [2022-01-18 13:26:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:26:04,523 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:04,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:04,534 INFO L225 Difference]: With dead ends: 7120 [2022-01-18 13:26:04,534 INFO L226 Difference]: Without dead ends: 7057 [2022-01-18 13:26:04,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=582, Invalid=3324, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:26:04,534 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 310 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:04,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2548 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:26:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2022-01-18 13:26:04,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 5293. [2022-01-18 13:26:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 2.9814814814814814) internal successors, (15778), 5292 states have internal predecessors, (15778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 15778 transitions. [2022-01-18 13:26:04,604 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 15778 transitions. Word has length 70 [2022-01-18 13:26:04,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:04,604 INFO L470 AbstractCegarLoop]: Abstraction has 5293 states and 15778 transitions. [2022-01-18 13:26:04,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 15778 transitions. [2022-01-18 13:26:04,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:04,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:04,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:04,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-01-18 13:26:04,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 13:26:04,827 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1369209191, now seen corresponding path program 72 times [2022-01-18 13:26:04,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:04,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648712079] [2022-01-18 13:26:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:04,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:05,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:05,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648712079] [2022-01-18 13:26:05,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648712079] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:05,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138938894] [2022-01-18 13:26:05,016 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:26:05,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:05,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:05,017 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:05,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 13:26:05,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:26:05,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:05,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:05,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:05,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:05,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138938894] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:05,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:05,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:26:05,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248055629] [2022-01-18 13:26:05,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:05,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:05,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:05,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:05,881 INFO L87 Difference]: Start difference. First operand 5293 states and 15778 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:08,102 INFO L93 Difference]: Finished difference Result 8261 states and 24206 transitions. [2022-01-18 13:26:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 13:26:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:08,115 INFO L225 Difference]: With dead ends: 8261 [2022-01-18 13:26:08,116 INFO L226 Difference]: Without dead ends: 8172 [2022-01-18 13:26:08,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1226, Invalid=7146, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 13:26:08,117 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 439 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:08,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 2745 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2022-01-18 13:26:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 5485. [2022-01-18 13:26:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5484 states have (on average 2.977753464624362) internal successors, (16330), 5484 states have internal predecessors, (16330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:08,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 16330 transitions. [2022-01-18 13:26:08,210 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 16330 transitions. Word has length 70 [2022-01-18 13:26:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:08,210 INFO L470 AbstractCegarLoop]: Abstraction has 5485 states and 16330 transitions. [2022-01-18 13:26:08,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 16330 transitions. [2022-01-18 13:26:08,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:08,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:08,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:08,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 13:26:08,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-01-18 13:26:08,433 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:08,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash 82600245, now seen corresponding path program 73 times [2022-01-18 13:26:08,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:08,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505826071] [2022-01-18 13:26:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:08,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:08,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505826071] [2022-01-18 13:26:08,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505826071] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923137566] [2022-01-18 13:26:08,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:26:08,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:08,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:08,567 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:08,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 13:26:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:08,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:08,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:08,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:09,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923137566] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:09,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:09,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:26:09,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208907211] [2022-01-18 13:26:09,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:09,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:09,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:09,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:09,287 INFO L87 Difference]: Start difference. First operand 5485 states and 16330 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:12,200 INFO L93 Difference]: Finished difference Result 8548 states and 24902 transitions. [2022-01-18 13:26:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 13:26:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:12,212 INFO L225 Difference]: With dead ends: 8548 [2022-01-18 13:26:12,212 INFO L226 Difference]: Without dead ends: 8347 [2022-01-18 13:26:12,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3949 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1577, Invalid=10195, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 13:26:12,213 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 619 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:12,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2929 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2022-01-18 13:26:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 5393. [2022-01-18 13:26:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5393 states, 5392 states have (on average 2.9808976261127595) internal successors, (16073), 5392 states have internal predecessors, (16073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5393 states to 5393 states and 16073 transitions. [2022-01-18 13:26:12,290 INFO L78 Accepts]: Start accepts. Automaton has 5393 states and 16073 transitions. Word has length 70 [2022-01-18 13:26:12,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:12,291 INFO L470 AbstractCegarLoop]: Abstraction has 5393 states and 16073 transitions. [2022-01-18 13:26:12,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5393 states and 16073 transitions. [2022-01-18 13:26:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:12,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:12,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:12,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 13:26:12,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:12,511 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1855705927, now seen corresponding path program 74 times [2022-01-18 13:26:12,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139738568] [2022-01-18 13:26:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:12,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:12,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:12,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139738568] [2022-01-18 13:26:12,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139738568] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:12,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285712767] [2022-01-18 13:26:12,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:26:12,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:12,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:12,667 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:12,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 13:26:12,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:26:12,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:12,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:12,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:12,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:13,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285712767] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:13,387 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:13,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:26:13,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546288467] [2022-01-18 13:26:13,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:13,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:13,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:13,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:13,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:13,387 INFO L87 Difference]: Start difference. First operand 5393 states and 16073 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:17,262 INFO L93 Difference]: Finished difference Result 9391 states and 27767 transitions. [2022-01-18 13:26:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 13:26:17,263 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:17,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:17,278 INFO L225 Difference]: With dead ends: 9391 [2022-01-18 13:26:17,278 INFO L226 Difference]: Without dead ends: 9321 [2022-01-18 13:26:17,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4948 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2244, Invalid=11798, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 13:26:17,280 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 549 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:17,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 2783 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:26:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2022-01-18 13:26:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 5713. [2022-01-18 13:26:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5713 states, 5712 states have (on average 2.9903711484593836) internal successors, (17081), 5712 states have internal predecessors, (17081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 17081 transitions. [2022-01-18 13:26:17,383 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 17081 transitions. Word has length 70 [2022-01-18 13:26:17,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:17,383 INFO L470 AbstractCegarLoop]: Abstraction has 5713 states and 17081 transitions. [2022-01-18 13:26:17,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 17081 transitions. [2022-01-18 13:26:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:17,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:17,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:17,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-18 13:26:17,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:17,607 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 569096981, now seen corresponding path program 75 times [2022-01-18 13:26:17,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:17,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571527490] [2022-01-18 13:26:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:17,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:17,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:17,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571527490] [2022-01-18 13:26:17,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571527490] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:17,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570061297] [2022-01-18 13:26:17,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:26:17,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:17,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:17,843 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:17,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 13:26:17,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:26:17,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:17,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:17,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:18,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:18,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570061297] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:18,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:18,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 13:26:18,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361393432] [2022-01-18 13:26:18,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:18,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 13:26:18,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 13:26:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 13:26:18,735 INFO L87 Difference]: Start difference. First operand 5713 states and 17081 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:23,020 INFO L93 Difference]: Finished difference Result 10418 states and 30896 transitions. [2022-01-18 13:26:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-18 13:26:23,020 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:23,038 INFO L225 Difference]: With dead ends: 10418 [2022-01-18 13:26:23,038 INFO L226 Difference]: Without dead ends: 10211 [2022-01-18 13:26:23,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10590 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4077, Invalid=23979, Unknown=0, NotChecked=0, Total=28056 [2022-01-18 13:26:23,041 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 824 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:23,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 3386 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:26:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2022-01-18 13:26:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 6809. [2022-01-18 13:26:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6809 states, 6808 states have (on average 3.008078730904818) internal successors, (20479), 6808 states have internal predecessors, (20479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6809 states to 6809 states and 20479 transitions. [2022-01-18 13:26:23,178 INFO L78 Accepts]: Start accepts. Automaton has 6809 states and 20479 transitions. Word has length 70 [2022-01-18 13:26:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:23,178 INFO L470 AbstractCegarLoop]: Abstraction has 6809 states and 20479 transitions. [2022-01-18 13:26:23,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:23,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6809 states and 20479 transitions. [2022-01-18 13:26:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:23,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:23,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:23,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-18 13:26:23,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 13:26:23,394 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash -845833117, now seen corresponding path program 76 times [2022-01-18 13:26:23,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:23,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151447555] [2022-01-18 13:26:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:23,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:23,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:23,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151447555] [2022-01-18 13:26:23,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151447555] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:23,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780210190] [2022-01-18 13:26:23,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:26:23,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:23,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:23,557 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:23,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 13:26:23,661 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:26:23,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:23,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:26:23,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:23,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:24,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780210190] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:24,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:24,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:26:24,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262549324] [2022-01-18 13:26:24,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:24,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:24,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:24,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:24,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:24,395 INFO L87 Difference]: Start difference. First operand 6809 states and 20479 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:25,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:25,324 INFO L93 Difference]: Finished difference Result 8250 states and 24519 transitions. [2022-01-18 13:26:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:26:25,324 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:25,337 INFO L225 Difference]: With dead ends: 8250 [2022-01-18 13:26:25,337 INFO L226 Difference]: Without dead ends: 8187 [2022-01-18 13:26:25,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:26:25,337 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 339 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:25,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2616 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-01-18 13:26:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6813. [2022-01-18 13:26:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6813 states, 6812 states have (on average 3.0079271873165) internal successors, (20490), 6812 states have internal predecessors, (20490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 20490 transitions. [2022-01-18 13:26:25,474 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 20490 transitions. Word has length 70 [2022-01-18 13:26:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:25,474 INFO L470 AbstractCegarLoop]: Abstraction has 6813 states and 20490 transitions. [2022-01-18 13:26:25,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 20490 transitions. [2022-01-18 13:26:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:25,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:25,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:25,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 13:26:25,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:25,691 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1864163485, now seen corresponding path program 77 times [2022-01-18 13:26:25,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:25,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419662170] [2022-01-18 13:26:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:25,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:25,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:25,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419662170] [2022-01-18 13:26:25,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419662170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:25,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451825093] [2022-01-18 13:26:25,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:26:25,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:25,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:25,868 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:25,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 13:26:25,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:26:25,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:25,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:26:25,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:26,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:26,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451825093] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:26,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:26,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:26:26,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588783810] [2022-01-18 13:26:26,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:26,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:26,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:26,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:26,533 INFO L87 Difference]: Start difference. First operand 6813 states and 20490 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:27,284 INFO L93 Difference]: Finished difference Result 8670 states and 25800 transitions. [2022-01-18 13:26:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:26:27,284 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:27,305 INFO L225 Difference]: With dead ends: 8670 [2022-01-18 13:26:27,305 INFO L226 Difference]: Without dead ends: 8592 [2022-01-18 13:26:27,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=629, Invalid=3531, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 13:26:27,306 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 337 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:27,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2357 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:26:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-01-18 13:26:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 7069. [2022-01-18 13:26:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7069 states, 7068 states have (on average 2.999151103565365) internal successors, (21198), 7068 states have internal predecessors, (21198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 21198 transitions. [2022-01-18 13:26:27,508 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 21198 transitions. Word has length 70 [2022-01-18 13:26:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:27,508 INFO L470 AbstractCegarLoop]: Abstraction has 7069 states and 21198 transitions. [2022-01-18 13:26:27,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 21198 transitions. [2022-01-18 13:26:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:27,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:27,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:27,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-01-18 13:26:27,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:27,719 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash -801486417, now seen corresponding path program 78 times [2022-01-18 13:26:27,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:27,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657793219] [2022-01-18 13:26:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:27,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:27,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:27,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657793219] [2022-01-18 13:26:27,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657793219] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:27,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324636711] [2022-01-18 13:26:27,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:26:27,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:27,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:27,799 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:27,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 13:26:27,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:26:27,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:27,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:27,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:28,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:28,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324636711] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:28,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:28,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:26:28,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044079034] [2022-01-18 13:26:28,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:28,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:28,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:28,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:28,736 INFO L87 Difference]: Start difference. First operand 7069 states and 21198 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:31,141 INFO L93 Difference]: Finished difference Result 9783 states and 28923 transitions. [2022-01-18 13:26:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 13:26:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:31,157 INFO L225 Difference]: With dead ends: 9783 [2022-01-18 13:26:31,158 INFO L226 Difference]: Without dead ends: 9557 [2022-01-18 13:26:31,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3056 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 13:26:31,159 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 536 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:31,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 2539 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2022-01-18 13:26:31,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 7145. [2022-01-18 13:26:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7144 states have (on average 2.9959406494960805) internal successors, (21403), 7144 states have internal predecessors, (21403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 21403 transitions. [2022-01-18 13:26:31,294 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 21403 transitions. Word has length 70 [2022-01-18 13:26:31,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:31,295 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 21403 transitions. [2022-01-18 13:26:31,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 21403 transitions. [2022-01-18 13:26:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:31,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:31,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:31,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-01-18 13:26:31,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:31,521 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1944307075, now seen corresponding path program 79 times [2022-01-18 13:26:31,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:31,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559424656] [2022-01-18 13:26:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:31,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:31,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:31,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559424656] [2022-01-18 13:26:31,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559424656] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:31,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384424640] [2022-01-18 13:26:31,640 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:26:31,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:31,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:31,641 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:31,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 13:26:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:31,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:31,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:32,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:32,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384424640] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:32,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:32,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:26:32,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186652612] [2022-01-18 13:26:32,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:32,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:32,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:32,517 INFO L87 Difference]: Start difference. First operand 7145 states and 21403 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:36,034 INFO L93 Difference]: Finished difference Result 12364 states and 36685 transitions. [2022-01-18 13:26:36,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 13:26:36,035 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:36,061 INFO L225 Difference]: With dead ends: 12364 [2022-01-18 13:26:36,061 INFO L226 Difference]: Without dead ends: 12286 [2022-01-18 13:26:36,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6266 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2687, Invalid=14869, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 13:26:36,063 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 719 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:36,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 2546 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-01-18 13:26:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 7585. [2022-01-18 13:26:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.0038238396624473) internal successors, (22781), 7584 states have internal predecessors, (22781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 22781 transitions. [2022-01-18 13:26:36,223 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 22781 transitions. Word has length 70 [2022-01-18 13:26:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:36,224 INFO L470 AbstractCegarLoop]: Abstraction has 7585 states and 22781 transitions. [2022-01-18 13:26:36,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 22781 transitions. [2022-01-18 13:26:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:36,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:36,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:36,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-18 13:26:36,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-18 13:26:36,439 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1064051275, now seen corresponding path program 80 times [2022-01-18 13:26:36,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:36,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533048326] [2022-01-18 13:26:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:36,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:36,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:36,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533048326] [2022-01-18 13:26:36,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533048326] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:36,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345543966] [2022-01-18 13:26:36,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:26:36,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:36,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:36,553 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:36,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 13:26:36,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:26:36,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:36,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:36,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:36,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:37,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345543966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:37,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:37,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:26:37,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904557973] [2022-01-18 13:26:37,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:37,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:37,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:37,292 INFO L87 Difference]: Start difference. First operand 7585 states and 22781 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:42,822 INFO L93 Difference]: Finished difference Result 13169 states and 38887 transitions. [2022-01-18 13:26:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-18 13:26:42,822 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:42,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:42,846 INFO L225 Difference]: With dead ends: 13169 [2022-01-18 13:26:42,846 INFO L226 Difference]: Without dead ends: 12961 [2022-01-18 13:26:42,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9122 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3474, Invalid=20706, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 13:26:42,848 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 835 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:42,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 3064 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:26:42,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2022-01-18 13:26:42,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 8545. [2022-01-18 13:26:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 3.0038623595505616) internal successors, (25665), 8544 states have internal predecessors, (25665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 25665 transitions. [2022-01-18 13:26:43,011 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 25665 transitions. Word has length 70 [2022-01-18 13:26:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:43,011 INFO L470 AbstractCegarLoop]: Abstraction has 8545 states and 25665 transitions. [2022-01-18 13:26:43,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 25665 transitions. [2022-01-18 13:26:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:43,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:43,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:43,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 13:26:43,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 13:26:43,227 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1956750805, now seen corresponding path program 81 times [2022-01-18 13:26:43,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:43,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744695206] [2022-01-18 13:26:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:43,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:43,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:43,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744695206] [2022-01-18 13:26:43,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744695206] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:43,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454370189] [2022-01-18 13:26:43,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:26:43,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:43,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:43,319 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:43,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 13:26:43,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:26:43,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:43,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:43,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:43,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:44,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454370189] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:44,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:44,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:26:44,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276327022] [2022-01-18 13:26:44,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:44,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:44,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:44,192 INFO L87 Difference]: Start difference. First operand 8545 states and 25665 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:50,251 INFO L93 Difference]: Finished difference Result 15093 states and 44939 transitions. [2022-01-18 13:26:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-01-18 13:26:50,251 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:50,275 INFO L225 Difference]: With dead ends: 15093 [2022-01-18 13:26:50,275 INFO L226 Difference]: Without dead ends: 15004 [2022-01-18 13:26:50,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12633 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4476, Invalid=28466, Unknown=0, NotChecked=0, Total=32942 [2022-01-18 13:26:50,277 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 754 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:50,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 3437 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:26:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2022-01-18 13:26:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 8781. [2022-01-18 13:26:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8781 states, 8780 states have (on average 3.0093394077448745) internal successors, (26422), 8780 states have internal predecessors, (26422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8781 states to 8781 states and 26422 transitions. [2022-01-18 13:26:50,438 INFO L78 Accepts]: Start accepts. Automaton has 8781 states and 26422 transitions. Word has length 70 [2022-01-18 13:26:50,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:50,439 INFO L470 AbstractCegarLoop]: Abstraction has 8781 states and 26422 transitions. [2022-01-18 13:26:50,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8781 states and 26422 transitions. [2022-01-18 13:26:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:50,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:50,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:50,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 13:26:50,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-01-18 13:26:50,665 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1791018719, now seen corresponding path program 82 times [2022-01-18 13:26:50,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:50,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631277162] [2022-01-18 13:26:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:50,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:50,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:50,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631277162] [2022-01-18 13:26:50,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631277162] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:50,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616143188] [2022-01-18 13:26:50,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:26:50,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:50,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:50,799 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:50,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 13:26:50,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:26:50,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:50,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:26:50,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:51,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:51,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616143188] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:51,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:51,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:26:51,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519150331] [2022-01-18 13:26:51,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:51,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:51,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:51,629 INFO L87 Difference]: Start difference. First operand 8781 states and 26422 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:53,154 INFO L93 Difference]: Finished difference Result 11574 states and 34306 transitions. [2022-01-18 13:26:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 13:26:53,154 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:53,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:53,172 INFO L225 Difference]: With dead ends: 11574 [2022-01-18 13:26:53,172 INFO L226 Difference]: Without dead ends: 11499 [2022-01-18 13:26:53,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1028, Invalid=6112, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 13:26:53,173 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 522 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:53,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 2611 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11499 states. [2022-01-18 13:26:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11499 to 8805. [2022-01-18 13:26:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8805 states, 8804 states have (on average 3.008632439800091) internal successors, (26488), 8804 states have internal predecessors, (26488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 26488 transitions. [2022-01-18 13:26:53,306 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 26488 transitions. Word has length 70 [2022-01-18 13:26:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:53,306 INFO L470 AbstractCegarLoop]: Abstraction has 8805 states and 26488 transitions. [2022-01-18 13:26:53,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 26488 transitions. [2022-01-18 13:26:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:53,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:53,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:53,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-18 13:26:53,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-01-18 13:26:53,531 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash 206048025, now seen corresponding path program 83 times [2022-01-18 13:26:53,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:53,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844334503] [2022-01-18 13:26:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:53,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:53,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:53,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844334503] [2022-01-18 13:26:53,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844334503] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:53,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493373803] [2022-01-18 13:26:53,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:26:53,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:53,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:53,686 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:53,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 13:26:53,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:26:53,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:26:53,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:54,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:54,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493373803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:54,438 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:54,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:26:54,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894438036] [2022-01-18 13:26:54,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:54,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:54,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:54,439 INFO L87 Difference]: Start difference. First operand 8805 states and 26488 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:55,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:55,454 INFO L93 Difference]: Finished difference Result 11718 states and 35118 transitions. [2022-01-18 13:26:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 13:26:55,455 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:26:55,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:55,472 INFO L225 Difference]: With dead ends: 11718 [2022-01-18 13:26:55,472 INFO L226 Difference]: Without dead ends: 11640 [2022-01-18 13:26:55,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2026 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1075, Invalid=5405, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 13:26:55,473 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 399 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:55,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 2471 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2022-01-18 13:26:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 8957. [2022-01-18 13:26:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 8956 states have (on average 3.014068780705672) internal successors, (26994), 8956 states have internal predecessors, (26994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 26994 transitions. [2022-01-18 13:26:55,612 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 26994 transitions. Word has length 70 [2022-01-18 13:26:55,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:55,612 INFO L470 AbstractCegarLoop]: Abstraction has 8957 states and 26994 transitions. [2022-01-18 13:26:55,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 26994 transitions. [2022-01-18 13:26:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:26:55,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:55,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:55,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 13:26:55,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:55,838 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:55,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1835365419, now seen corresponding path program 84 times [2022-01-18 13:26:55,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:55,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615994730] [2022-01-18 13:26:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:55,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:55,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:55,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615994730] [2022-01-18 13:26:55,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615994730] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:26:55,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182217464] [2022-01-18 13:26:55,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:26:55,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:26:55,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:26:55,965 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:26:55,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 13:26:56,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:26:56,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:26:56,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:26:56,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:26:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:56,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:26:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:56,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182217464] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:26:56,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:26:56,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:26:56,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185041101] [2022-01-18 13:26:56,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:26:56,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:26:56,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:26:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:26:56,875 INFO L87 Difference]: Start difference. First operand 8957 states and 26994 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:01,012 INFO L93 Difference]: Finished difference Result 12589 states and 37341 transitions. [2022-01-18 13:27:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 13:27:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:01,032 INFO L225 Difference]: With dead ends: 12589 [2022-01-18 13:27:01,032 INFO L226 Difference]: Without dead ends: 12363 [2022-01-18 13:27:01,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6416 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2449, Invalid=15373, Unknown=0, NotChecked=0, Total=17822 [2022-01-18 13:27:01,034 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 765 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:01,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 3232 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:27:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12363 states. [2022-01-18 13:27:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12363 to 9093. [2022-01-18 13:27:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9093 states, 9092 states have (on average 3.0153981522217332) internal successors, (27416), 9092 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9093 states to 9093 states and 27416 transitions. [2022-01-18 13:27:01,223 INFO L78 Accepts]: Start accepts. Automaton has 9093 states and 27416 transitions. Word has length 70 [2022-01-18 13:27:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:01,223 INFO L470 AbstractCegarLoop]: Abstraction has 9093 states and 27416 transitions. [2022-01-18 13:27:01,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 9093 states and 27416 transitions. [2022-01-18 13:27:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:01,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:01,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:01,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:01,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:01,447 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:01,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash 692544761, now seen corresponding path program 85 times [2022-01-18 13:27:01,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:01,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068197131] [2022-01-18 13:27:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:01,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:01,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:01,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068197131] [2022-01-18 13:27:01,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068197131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:01,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394558078] [2022-01-18 13:27:01,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:27:01,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:01,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:01,568 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:01,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 13:27:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:01,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:01,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:01,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:02,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394558078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:02,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:02,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:27:02,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699847189] [2022-01-18 13:27:02,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:02,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:27:02,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:27:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:27:02,469 INFO L87 Difference]: Start difference. First operand 9093 states and 27416 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:06,271 INFO L93 Difference]: Finished difference Result 13905 states and 41521 transitions. [2022-01-18 13:27:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 13:27:06,271 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:06,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:06,294 INFO L225 Difference]: With dead ends: 13905 [2022-01-18 13:27:06,294 INFO L226 Difference]: Without dead ends: 13819 [2022-01-18 13:27:06,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3010, Invalid=14546, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 13:27:06,295 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 827 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:06,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2465 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13819 states. [2022-01-18 13:27:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13819 to 9969. [2022-01-18 13:27:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 3.0217696629213484) internal successors, (30121), 9968 states have internal predecessors, (30121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 30121 transitions. [2022-01-18 13:27:06,475 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 30121 transitions. Word has length 70 [2022-01-18 13:27:06,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:06,475 INFO L470 AbstractCegarLoop]: Abstraction has 9969 states and 30121 transitions. [2022-01-18 13:27:06,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:06,476 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 30121 transitions. [2022-01-18 13:27:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:06,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:06,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:06,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:06,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-01-18 13:27:06,689 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:06,689 INFO L85 PathProgramCache]: Analyzing trace with hash 680101031, now seen corresponding path program 86 times [2022-01-18 13:27:06,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:06,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711000622] [2022-01-18 13:27:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:06,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:06,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711000622] [2022-01-18 13:27:06,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711000622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996717780] [2022-01-18 13:27:06,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:27:06,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:06,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:06,768 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:06,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 13:27:06,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:27:06,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:06,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:06,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:07,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:07,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996717780] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:07,390 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:07,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:27:07,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329523279] [2022-01-18 13:27:07,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:07,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:27:07,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:27:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:27:07,390 INFO L87 Difference]: Start difference. First operand 9969 states and 30121 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:10,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:10,803 INFO L93 Difference]: Finished difference Result 16134 states and 48531 transitions. [2022-01-18 13:27:10,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 13:27:10,803 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:10,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:10,830 INFO L225 Difference]: With dead ends: 16134 [2022-01-18 13:27:10,830 INFO L226 Difference]: Without dead ends: 16045 [2022-01-18 13:27:10,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6718 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3044, Invalid=15316, Unknown=0, NotChecked=0, Total=18360 [2022-01-18 13:27:10,831 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 748 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:10,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 3134 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16045 states. [2022-01-18 13:27:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16045 to 10725. [2022-01-18 13:27:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10725 states, 10724 states have (on average 3.0365535248041775) internal successors, (32564), 10724 states have internal predecessors, (32564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:11,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 32564 transitions. [2022-01-18 13:27:11,023 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 32564 transitions. Word has length 70 [2022-01-18 13:27:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:11,023 INFO L470 AbstractCegarLoop]: Abstraction has 10725 states and 32564 transitions. [2022-01-18 13:27:11,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 32564 transitions. [2022-01-18 13:27:11,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:11,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:11,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:11,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:11,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:11,239 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash -86569393, now seen corresponding path program 87 times [2022-01-18 13:27:11,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:11,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114980746] [2022-01-18 13:27:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:11,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:11,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:11,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114980746] [2022-01-18 13:27:11,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114980746] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:11,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898855906] [2022-01-18 13:27:11,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:27:11,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:11,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:11,333 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:11,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 13:27:11,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:27:11,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:11,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:11,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:11,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:12,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898855906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:12,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:12,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 13:27:12,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204254688] [2022-01-18 13:27:12,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:12,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 13:27:12,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 13:27:12,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 13:27:12,020 INFO L87 Difference]: Start difference. First operand 10725 states and 32564 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:13,545 INFO L93 Difference]: Finished difference Result 12758 states and 38181 transitions. [2022-01-18 13:27:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 13:27:13,546 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:13,567 INFO L225 Difference]: With dead ends: 12758 [2022-01-18 13:27:13,567 INFO L226 Difference]: Without dead ends: 12583 [2022-01-18 13:27:13,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=765, Invalid=5397, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 13:27:13,568 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 493 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:13,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 2525 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:13,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12583 states. [2022-01-18 13:27:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12583 to 11021. [2022-01-18 13:27:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11021 states, 11020 states have (on average 3.0339382940108894) internal successors, (33434), 11020 states have internal predecessors, (33434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 33434 transitions. [2022-01-18 13:27:13,733 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 33434 transitions. Word has length 70 [2022-01-18 13:27:13,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:13,733 INFO L470 AbstractCegarLoop]: Abstraction has 11021 states and 33434 transitions. [2022-01-18 13:27:13,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 33434 transitions. [2022-01-18 13:27:13,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:13,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:13,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:13,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:13,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:13,963 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1525183769, now seen corresponding path program 88 times [2022-01-18 13:27:13,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:13,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488340110] [2022-01-18 13:27:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:13,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:14,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:14,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488340110] [2022-01-18 13:27:14,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488340110] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:14,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959327452] [2022-01-18 13:27:14,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:27:14,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:14,104 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:14,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 13:27:14,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:27:14,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:14,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:27:14,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:14,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:14,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959327452] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:14,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:14,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:27:14,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473000930] [2022-01-18 13:27:14,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:14,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:27:14,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:27:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:27:14,749 INFO L87 Difference]: Start difference. First operand 11021 states and 33434 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:15,488 INFO L93 Difference]: Finished difference Result 12477 states and 37314 transitions. [2022-01-18 13:27:15,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:27:15,488 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:15,509 INFO L225 Difference]: With dead ends: 12477 [2022-01-18 13:27:15,509 INFO L226 Difference]: Without dead ends: 12281 [2022-01-18 13:27:15,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=406, Invalid=3254, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:27:15,510 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 481 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:15,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 2814 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:27:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12281 states. [2022-01-18 13:27:15,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12281 to 11017. [2022-01-18 13:27:15,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 3.034041394335512) internal successors, (33423), 11016 states have internal predecessors, (33423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 33423 transitions. [2022-01-18 13:27:15,682 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 33423 transitions. Word has length 70 [2022-01-18 13:27:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:15,683 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 33423 transitions. [2022-01-18 13:27:15,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 33423 transitions. [2022-01-18 13:27:15,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:15,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:15,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:15,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-01-18 13:27:15,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:15,899 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:15,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1281105169, now seen corresponding path program 89 times [2022-01-18 13:27:15,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:15,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034579822] [2022-01-18 13:27:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:15,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:16,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:16,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034579822] [2022-01-18 13:27:16,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034579822] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:16,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204533766] [2022-01-18 13:27:16,015 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:27:16,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:16,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:16,016 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:16,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 13:27:16,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:27:16,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:16,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:16,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:16,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:16,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204533766] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:16,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:16,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:16,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705263950] [2022-01-18 13:27:16,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:16,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:16,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:16,780 INFO L87 Difference]: Start difference. First operand 11017 states and 33423 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:18,399 INFO L93 Difference]: Finished difference Result 17317 states and 52070 transitions. [2022-01-18 13:27:18,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 13:27:18,399 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:18,426 INFO L225 Difference]: With dead ends: 17317 [2022-01-18 13:27:18,426 INFO L226 Difference]: Without dead ends: 17131 [2022-01-18 13:27:18,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=827, Invalid=5653, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 13:27:18,427 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 479 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:18,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1794 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:27:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17131 states. [2022-01-18 13:27:18,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17131 to 11697. [2022-01-18 13:27:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11697 states, 11696 states have (on average 3.031207250341997) internal successors, (35453), 11696 states have internal predecessors, (35453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11697 states to 11697 states and 35453 transitions. [2022-01-18 13:27:18,621 INFO L78 Accepts]: Start accepts. Automaton has 11697 states and 35453 transitions. Word has length 70 [2022-01-18 13:27:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:18,621 INFO L470 AbstractCegarLoop]: Abstraction has 11697 states and 35453 transitions. [2022-01-18 13:27:18,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 11697 states and 35453 transitions. [2022-01-18 13:27:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:18,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:18,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:18,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:18,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-01-18 13:27:18,851 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:18,851 INFO L85 PathProgramCache]: Analyzing trace with hash -360508537, now seen corresponding path program 90 times [2022-01-18 13:27:18,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:18,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003765367] [2022-01-18 13:27:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:18,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:18,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:18,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003765367] [2022-01-18 13:27:18,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003765367] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:18,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046458692] [2022-01-18 13:27:18,970 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:27:18,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:18,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:18,971 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:18,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 13:27:19,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:27:19,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:19,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:19,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:19,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:19,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046458692] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:19,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:19,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 13:27:19,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79609672] [2022-01-18 13:27:19,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:19,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 13:27:19,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:19,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 13:27:19,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 13:27:19,808 INFO L87 Difference]: Start difference. First operand 11697 states and 35453 transitions. Second operand has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:22,107 INFO L93 Difference]: Finished difference Result 15500 states and 46196 transitions. [2022-01-18 13:27:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 13:27:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:22,134 INFO L225 Difference]: With dead ends: 15500 [2022-01-18 13:27:22,134 INFO L226 Difference]: Without dead ends: 15425 [2022-01-18 13:27:22,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1270, Invalid=7850, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 13:27:22,135 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 494 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:22,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 3431 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:27:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2022-01-18 13:27:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 12397. [2022-01-18 13:27:22,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12397 states, 12396 states have (on average 3.0450145208131656) internal successors, (37746), 12396 states have internal predecessors, (37746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 37746 transitions. [2022-01-18 13:27:22,338 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 37746 transitions. Word has length 70 [2022-01-18 13:27:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:22,338 INFO L470 AbstractCegarLoop]: Abstraction has 12397 states and 37746 transitions. [2022-01-18 13:27:22,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 37746 transitions. [2022-01-18 13:27:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:22,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:22,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:22,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 13:27:22,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-01-18 13:27:22,570 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash -398905281, now seen corresponding path program 91 times [2022-01-18 13:27:22,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:22,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233441302] [2022-01-18 13:27:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:22,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:22,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:22,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233441302] [2022-01-18 13:27:22,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233441302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:22,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461444397] [2022-01-18 13:27:22,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:27:22,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:22,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:22,694 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:22,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 13:27:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:22,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:22,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:23,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:23,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461444397] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:23,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:23,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:23,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722177847] [2022-01-18 13:27:23,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:23,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:23,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:23,503 INFO L87 Difference]: Start difference. First operand 12397 states and 37746 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:25,084 INFO L93 Difference]: Finished difference Result 18209 states and 54741 transitions. [2022-01-18 13:27:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 13:27:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:25,115 INFO L225 Difference]: With dead ends: 18209 [2022-01-18 13:27:25,115 INFO L226 Difference]: Without dead ends: 18069 [2022-01-18 13:27:25,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=867, Invalid=5139, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 13:27:25,116 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 439 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:25,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 2400 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18069 states. [2022-01-18 13:27:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18069 to 12569. [2022-01-18 13:27:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12569 states, 12568 states have (on average 3.044796308084023) internal successors, (38267), 12568 states have internal predecessors, (38267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12569 states to 12569 states and 38267 transitions. [2022-01-18 13:27:25,342 INFO L78 Accepts]: Start accepts. Automaton has 12569 states and 38267 transitions. Word has length 70 [2022-01-18 13:27:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:25,342 INFO L470 AbstractCegarLoop]: Abstraction has 12569 states and 38267 transitions. [2022-01-18 13:27:25,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 12569 states and 38267 transitions. [2022-01-18 13:27:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:25,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:25,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:25,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 13:27:25,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-18 13:27:25,575 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1458757001, now seen corresponding path program 92 times [2022-01-18 13:27:25,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:25,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99023707] [2022-01-18 13:27:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:25,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:25,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:25,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99023707] [2022-01-18 13:27:25,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99023707] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:25,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523728342] [2022-01-18 13:27:25,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:27:25,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:25,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:25,680 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:25,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 13:27:25,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:27:25,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:25,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:25,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:25,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:26,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523728342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:26,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:26,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:26,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536476037] [2022-01-18 13:27:26,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:26,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:26,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:26,265 INFO L87 Difference]: Start difference. First operand 12569 states and 38267 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:28,722 INFO L93 Difference]: Finished difference Result 19261 states and 57956 transitions. [2022-01-18 13:27:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-18 13:27:28,722 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:28,754 INFO L225 Difference]: With dead ends: 19261 [2022-01-18 13:27:28,754 INFO L226 Difference]: Without dead ends: 19135 [2022-01-18 13:27:28,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4541 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1898, Invalid=10984, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 13:27:28,756 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 578 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:28,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2643 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19135 states. [2022-01-18 13:27:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19135 to 12745. [2022-01-18 13:27:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 12744 states have (on average 3.045433145009416) internal successors, (38811), 12744 states have internal predecessors, (38811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 38811 transitions. [2022-01-18 13:27:28,987 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 38811 transitions. Word has length 70 [2022-01-18 13:27:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:28,987 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 38811 transitions. [2022-01-18 13:27:28,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 38811 transitions. [2022-01-18 13:27:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:29,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:29,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:29,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 13:27:29,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:29,219 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1497153745, now seen corresponding path program 93 times [2022-01-18 13:27:29,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:29,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371547559] [2022-01-18 13:27:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:29,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:29,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:29,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371547559] [2022-01-18 13:27:29,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371547559] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:29,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856267714] [2022-01-18 13:27:29,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:27:29,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:29,355 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:29,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 13:27:29,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:27:29,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:29,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:29,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:29,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:30,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856267714] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:30,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:30,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:30,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105733039] [2022-01-18 13:27:30,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:30,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:30,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:30,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:30,205 INFO L87 Difference]: Start difference. First operand 12745 states and 38811 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:33,044 INFO L93 Difference]: Finished difference Result 19613 states and 58886 transitions. [2022-01-18 13:27:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 13:27:33,044 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:33,078 INFO L225 Difference]: With dead ends: 19613 [2022-01-18 13:27:33,078 INFO L226 Difference]: Without dead ends: 19473 [2022-01-18 13:27:33,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1988, Invalid=10668, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 13:27:33,079 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 624 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:33,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 2756 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:27:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19473 states. [2022-01-18 13:27:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19473 to 12769. [2022-01-18 13:27:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12769 states, 12768 states have (on average 3.045817669172932) internal successors, (38889), 12768 states have internal predecessors, (38889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12769 states to 12769 states and 38889 transitions. [2022-01-18 13:27:33,315 INFO L78 Accepts]: Start accepts. Automaton has 12769 states and 38889 transitions. Word has length 70 [2022-01-18 13:27:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:33,315 INFO L470 AbstractCegarLoop]: Abstraction has 12769 states and 38889 transitions. [2022-01-18 13:27:33,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 12769 states and 38889 transitions. [2022-01-18 13:27:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:33,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:33,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:33,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:33,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-01-18 13:27:33,547 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:33,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1832125171, now seen corresponding path program 94 times [2022-01-18 13:27:33,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:33,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281252219] [2022-01-18 13:27:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:33,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:33,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:33,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281252219] [2022-01-18 13:27:33,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281252219] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:33,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164685653] [2022-01-18 13:27:33,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:27:33,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:33,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:33,668 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:33,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 13:27:33,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:27:33,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:33,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:27:33,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:34,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:34,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164685653] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:34,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:34,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:27:34,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963520486] [2022-01-18 13:27:34,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:34,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:27:34,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:34,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:27:34,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:27:34,385 INFO L87 Difference]: Start difference. First operand 12769 states and 38889 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:35,882 INFO L93 Difference]: Finished difference Result 17008 states and 51265 transitions. [2022-01-18 13:27:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 13:27:35,882 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:35,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:35,910 INFO L225 Difference]: With dead ends: 17008 [2022-01-18 13:27:35,910 INFO L226 Difference]: Without dead ends: 16868 [2022-01-18 13:27:35,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=7824, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 13:27:35,911 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 548 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:35,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 2419 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2022-01-18 13:27:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13465. [2022-01-18 13:27:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13465 states, 13464 states have (on average 3.05102495543672) internal successors, (41079), 13464 states have internal predecessors, (41079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13465 states to 13465 states and 41079 transitions. [2022-01-18 13:27:36,134 INFO L78 Accepts]: Start accepts. Automaton has 13465 states and 41079 transitions. Word has length 70 [2022-01-18 13:27:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:36,134 INFO L470 AbstractCegarLoop]: Abstraction has 13465 states and 41079 transitions. [2022-01-18 13:27:36,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 13465 states and 41079 transitions. [2022-01-18 13:27:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:36,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:36,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:36,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:36,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-01-18 13:27:36,359 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash -480808329, now seen corresponding path program 95 times [2022-01-18 13:27:36,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:36,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107144325] [2022-01-18 13:27:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:36,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:36,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:36,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107144325] [2022-01-18 13:27:36,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107144325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:36,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193989232] [2022-01-18 13:27:36,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:27:36,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:36,437 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:36,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 13:27:36,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:27:36,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:36,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:27:36,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:36,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:36,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193989232] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:36,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:36,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:27:36,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81124228] [2022-01-18 13:27:36,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:36,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:27:36,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:27:36,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:27:36,954 INFO L87 Difference]: Start difference. First operand 13465 states and 41079 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:37,711 INFO L93 Difference]: Finished difference Result 16291 states and 49496 transitions. [2022-01-18 13:27:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:27:37,712 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:37,740 INFO L225 Difference]: With dead ends: 16291 [2022-01-18 13:27:37,740 INFO L226 Difference]: Without dead ends: 16187 [2022-01-18 13:27:37,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=979, Invalid=3991, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 13:27:37,741 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 581 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:37,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 2506 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:27:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16187 states. [2022-01-18 13:27:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16187 to 11569. [2022-01-18 13:27:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 11568 states have (on average 3.0426175656984786) internal successors, (35197), 11568 states have internal predecessors, (35197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:37,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 35197 transitions. [2022-01-18 13:27:37,986 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 35197 transitions. Word has length 70 [2022-01-18 13:27:37,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:37,986 INFO L470 AbstractCegarLoop]: Abstraction has 11569 states and 35197 transitions. [2022-01-18 13:27:37,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 35197 transitions. [2022-01-18 13:27:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:38,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:38,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:38,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:38,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-01-18 13:27:38,216 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:38,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:38,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1145842415, now seen corresponding path program 96 times [2022-01-18 13:27:38,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:38,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34607695] [2022-01-18 13:27:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:38,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:38,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:38,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34607695] [2022-01-18 13:27:38,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34607695] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:38,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789126934] [2022-01-18 13:27:38,302 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:27:38,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:38,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:38,303 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:38,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 13:27:38,402 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:27:38,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:38,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:38,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:38,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:38,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789126934] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:38,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:38,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:38,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818033745] [2022-01-18 13:27:38,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:38,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:38,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:38,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:38,854 INFO L87 Difference]: Start difference. First operand 11569 states and 35197 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:41,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:41,120 INFO L93 Difference]: Finished difference Result 17131 states and 51397 transitions. [2022-01-18 13:27:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 13:27:41,120 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:41,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:41,153 INFO L225 Difference]: With dead ends: 17131 [2022-01-18 13:27:41,153 INFO L226 Difference]: Without dead ends: 17005 [2022-01-18 13:27:41,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3029 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1312, Invalid=7808, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 13:27:41,154 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 587 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:41,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1952 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17005 states. [2022-01-18 13:27:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17005 to 11629. [2022-01-18 13:27:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 11628 states have (on average 3.042139662882697) internal successors, (35374), 11628 states have internal predecessors, (35374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35374 transitions. [2022-01-18 13:27:41,425 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35374 transitions. Word has length 70 [2022-01-18 13:27:41,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:41,425 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35374 transitions. [2022-01-18 13:27:41,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35374 transitions. [2022-01-18 13:27:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:41,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:41,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:41,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:41,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-01-18 13:27:41,658 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:41,658 INFO L85 PathProgramCache]: Analyzing trace with hash -566247181, now seen corresponding path program 97 times [2022-01-18 13:27:41,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:41,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907166237] [2022-01-18 13:27:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:41,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:41,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:41,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907166237] [2022-01-18 13:27:41,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907166237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:41,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45537164] [2022-01-18 13:27:41,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:27:41,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:41,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:41,843 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:41,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 13:27:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:41,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:41,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:42,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:42,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45537164] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:42,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:42,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:42,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096436146] [2022-01-18 13:27:42,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:42,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:42,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:42,697 INFO L87 Difference]: Start difference. First operand 11629 states and 35374 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:44,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:44,122 INFO L93 Difference]: Finished difference Result 16449 states and 49459 transitions. [2022-01-18 13:27:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 13:27:44,122 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:44,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:44,150 INFO L225 Difference]: With dead ends: 16449 [2022-01-18 13:27:44,150 INFO L226 Difference]: Without dead ends: 16315 [2022-01-18 13:27:44,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=864, Invalid=5142, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 13:27:44,151 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 461 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:44,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 2118 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16315 states. [2022-01-18 13:27:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16315 to 11629. [2022-01-18 13:27:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 11628 states have (on average 3.042483660130719) internal successors, (35378), 11628 states have internal predecessors, (35378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35378 transitions. [2022-01-18 13:27:44,350 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35378 transitions. Word has length 70 [2022-01-18 13:27:44,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:44,350 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35378 transitions. [2022-01-18 13:27:44,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35378 transitions. [2022-01-18 13:27:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:44,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:44,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:44,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:44,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:44,571 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash 45657325, now seen corresponding path program 98 times [2022-01-18 13:27:44,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:44,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915188297] [2022-01-18 13:27:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:44,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:44,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:44,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915188297] [2022-01-18 13:27:44,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915188297] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:44,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146151813] [2022-01-18 13:27:44,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:27:44,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:44,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:44,683 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:44,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 13:27:44,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:27:44,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:44,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:44,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:45,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:45,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146151813] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:45,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:45,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:45,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240828564] [2022-01-18 13:27:45,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:45,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:45,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:45,472 INFO L87 Difference]: Start difference. First operand 11629 states and 35378 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:47,527 INFO L93 Difference]: Finished difference Result 17464 states and 52615 transitions. [2022-01-18 13:27:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 13:27:47,527 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:47,556 INFO L225 Difference]: With dead ends: 17464 [2022-01-18 13:27:47,557 INFO L226 Difference]: Without dead ends: 17338 [2022-01-18 13:27:47,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2726 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1223, Invalid=7707, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 13:27:47,558 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 439 mSDsluCounter, 3031 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:47,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 3055 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17338 states. [2022-01-18 13:27:47,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17338 to 11665. [2022-01-18 13:27:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11665 states, 11664 states have (on average 3.042266803840878) internal successors, (35485), 11664 states have internal predecessors, (35485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11665 states to 11665 states and 35485 transitions. [2022-01-18 13:27:47,765 INFO L78 Accepts]: Start accepts. Automaton has 11665 states and 35485 transitions. Word has length 70 [2022-01-18 13:27:47,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:47,765 INFO L470 AbstractCegarLoop]: Abstraction has 11665 states and 35485 transitions. [2022-01-18 13:27:47,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states and 35485 transitions. [2022-01-18 13:27:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:47,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:47,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:47,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:47,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:47,995 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:47,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1539313369, now seen corresponding path program 99 times [2022-01-18 13:27:47,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:47,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957913228] [2022-01-18 13:27:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:47,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:48,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:48,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957913228] [2022-01-18 13:27:48,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957913228] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:48,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381914616] [2022-01-18 13:27:48,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:27:48,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:48,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:48,125 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:48,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 13:27:48,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:27:48,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:48,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:48,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:48,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:49,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381914616] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:49,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:49,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:49,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393185203] [2022-01-18 13:27:49,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:49,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:49,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:49,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:49,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:49,020 INFO L87 Difference]: Start difference. First operand 11665 states and 35485 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:51,043 INFO L93 Difference]: Finished difference Result 17251 states and 52120 transitions. [2022-01-18 13:27:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 13:27:51,043 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:51,073 INFO L225 Difference]: With dead ends: 17251 [2022-01-18 13:27:51,073 INFO L226 Difference]: Without dead ends: 17095 [2022-01-18 13:27:51,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1214, Invalid=7342, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 13:27:51,073 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 387 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:51,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 2664 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17095 states. [2022-01-18 13:27:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17095 to 11649. [2022-01-18 13:27:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11649 states, 11648 states have (on average 3.0423248626373627) internal successors, (35437), 11648 states have internal predecessors, (35437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11649 states to 11649 states and 35437 transitions. [2022-01-18 13:27:51,276 INFO L78 Accepts]: Start accepts. Automaton has 11649 states and 35437 transitions. Word has length 70 [2022-01-18 13:27:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:51,277 INFO L470 AbstractCegarLoop]: Abstraction has 11649 states and 35437 transitions. [2022-01-18 13:27:51,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 11649 states and 35437 transitions. [2022-01-18 13:27:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:51,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:51,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:51,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:51,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:51,506 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:51,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash 90004025, now seen corresponding path program 100 times [2022-01-18 13:27:51,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:51,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157395794] [2022-01-18 13:27:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:51,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:51,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:51,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157395794] [2022-01-18 13:27:51,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157395794] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:51,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169278065] [2022-01-18 13:27:51,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:27:51,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:51,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:51,620 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:51,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 13:27:51,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:27:51,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:51,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 13:27:51,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:51,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:52,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169278065] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:52,162 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:52,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-01-18 13:27:52,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760682274] [2022-01-18 13:27:52,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:52,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 13:27:52,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 13:27:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:27:52,169 INFO L87 Difference]: Start difference. First operand 11649 states and 35437 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:52,836 INFO L93 Difference]: Finished difference Result 13738 states and 41509 transitions. [2022-01-18 13:27:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:27:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:52,858 INFO L225 Difference]: With dead ends: 13738 [2022-01-18 13:27:52,859 INFO L226 Difference]: Without dead ends: 13574 [2022-01-18 13:27:52,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=581, Invalid=3579, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 13:27:52,859 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 344 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:52,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2526 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:27:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2022-01-18 13:27:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 11701. [2022-01-18 13:27:53,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11701 states, 11700 states have (on average 3.0413675213675213) internal successors, (35584), 11700 states have internal predecessors, (35584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11701 states to 11701 states and 35584 transitions. [2022-01-18 13:27:53,035 INFO L78 Accepts]: Start accepts. Automaton has 11701 states and 35584 transitions. Word has length 70 [2022-01-18 13:27:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:53,036 INFO L470 AbstractCegarLoop]: Abstraction has 11701 states and 35584 transitions. [2022-01-18 13:27:53,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 11701 states and 35584 transitions. [2022-01-18 13:27:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:53,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:53,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:53,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:53,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:53,265 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1052816633, now seen corresponding path program 101 times [2022-01-18 13:27:53,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:53,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086166685] [2022-01-18 13:27:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:53,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:53,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:53,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086166685] [2022-01-18 13:27:53,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086166685] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:53,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916049903] [2022-01-18 13:27:53,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:27:53,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:53,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:53,410 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:53,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 13:27:53,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:27:53,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:53,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:27:53,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:53,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:54,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916049903] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:54,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:54,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:27:54,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771989401] [2022-01-18 13:27:54,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:54,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:27:54,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:54,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:27:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:27:54,069 INFO L87 Difference]: Start difference. First operand 11701 states and 35584 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:55,432 INFO L93 Difference]: Finished difference Result 16211 states and 49160 transitions. [2022-01-18 13:27:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 13:27:55,432 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:55,462 INFO L225 Difference]: With dead ends: 16211 [2022-01-18 13:27:55,462 INFO L226 Difference]: Without dead ends: 16125 [2022-01-18 13:27:55,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2396 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1475, Invalid=6715, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 13:27:55,463 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 415 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:55,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 2548 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2022-01-18 13:27:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 12377. [2022-01-18 13:27:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12377 states, 12376 states have (on average 3.055187459599224) internal successors, (37811), 12376 states have internal predecessors, (37811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12377 states to 12377 states and 37811 transitions. [2022-01-18 13:27:55,684 INFO L78 Accepts]: Start accepts. Automaton has 12377 states and 37811 transitions. Word has length 70 [2022-01-18 13:27:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:55,684 INFO L470 AbstractCegarLoop]: Abstraction has 12377 states and 37811 transitions. [2022-01-18 13:27:55,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 12377 states and 37811 transitions. [2022-01-18 13:27:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:55,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:55,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:55,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 13:27:55,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-01-18 13:27:55,903 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:55,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1065260363, now seen corresponding path program 102 times [2022-01-18 13:27:55,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:55,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629608755] [2022-01-18 13:27:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:55,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:56,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:56,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629608755] [2022-01-18 13:27:56,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629608755] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:56,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843372355] [2022-01-18 13:27:56,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:27:56,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:56,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:56,065 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:56,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 13:27:56,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:27:56,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:27:56,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:56,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:27:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:56,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:27:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:56,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843372355] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:27:56,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:27:56,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:27:56,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024417964] [2022-01-18 13:27:56,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:27:56,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:27:56,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:27:56,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:27:56,727 INFO L87 Difference]: Start difference. First operand 12377 states and 37811 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:59,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:59,088 INFO L93 Difference]: Finished difference Result 21245 states and 64502 transitions. [2022-01-18 13:27:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 13:27:59,088 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:27:59,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:59,122 INFO L225 Difference]: With dead ends: 21245 [2022-01-18 13:27:59,122 INFO L226 Difference]: Without dead ends: 21105 [2022-01-18 13:27:59,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4045 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1827, Invalid=9945, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 13:27:59,122 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 616 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:59,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 2447 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21105 states. [2022-01-18 13:27:59,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21105 to 12685. [2022-01-18 13:27:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12685 states, 12684 states have (on average 3.054714601072217) internal successors, (38746), 12684 states have internal predecessors, (38746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12685 states to 12685 states and 38746 transitions. [2022-01-18 13:27:59,357 INFO L78 Accepts]: Start accepts. Automaton has 12685 states and 38746 transitions. Word has length 70 [2022-01-18 13:27:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 12685 states and 38746 transitions. [2022-01-18 13:27:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 12685 states and 38746 transitions. [2022-01-18 13:27:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:27:59,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:59,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:59,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-01-18 13:27:59,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-01-18 13:27:59,583 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:59,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:59,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1448736071, now seen corresponding path program 103 times [2022-01-18 13:27:59,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:59,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040818838] [2022-01-18 13:27:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:59,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:59,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:59,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040818838] [2022-01-18 13:27:59,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040818838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:27:59,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437129488] [2022-01-18 13:27:59,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:27:59,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:27:59,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:27:59,709 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:27:59,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 13:27:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:59,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:27:59,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:00,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:00,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437129488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:00,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:00,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:00,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721933287] [2022-01-18 13:28:00,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:00,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:00,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:00,298 INFO L87 Difference]: Start difference. First operand 12685 states and 38746 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:01,989 INFO L93 Difference]: Finished difference Result 18355 states and 55702 transitions. [2022-01-18 13:28:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 13:28:01,989 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:02,022 INFO L225 Difference]: With dead ends: 18355 [2022-01-18 13:28:02,022 INFO L226 Difference]: Without dead ends: 18193 [2022-01-18 13:28:02,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1311, Invalid=8391, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 13:28:02,023 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 418 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:02,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 3019 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18193 states. [2022-01-18 13:28:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18193 to 12725. [2022-01-18 13:28:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 12724 states have (on average 3.054699779943414) internal successors, (38868), 12724 states have internal predecessors, (38868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-01-18 13:28:02,320 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-01-18 13:28:02,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:02,321 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-01-18 13:28:02,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:02,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-01-18 13:28:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:02,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:02,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:02,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:02,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-01-18 13:28:02,554 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:02,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:02,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1493082771, now seen corresponding path program 104 times [2022-01-18 13:28:02,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:02,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334802698] [2022-01-18 13:28:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:02,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:02,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:02,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334802698] [2022-01-18 13:28:02,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334802698] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:02,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009251932] [2022-01-18 13:28:02,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:28:02,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:02,670 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:02,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 13:28:02,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:28:02,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:02,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:02,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:03,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:03,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009251932] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:03,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:03,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:03,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66302521] [2022-01-18 13:28:03,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:03,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:03,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:03,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:03,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:03,517 INFO L87 Difference]: Start difference. First operand 12725 states and 38868 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:04,878 INFO L93 Difference]: Finished difference Result 18145 states and 55212 transitions. [2022-01-18 13:28:04,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 13:28:04,878 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:04,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:04,909 INFO L225 Difference]: With dead ends: 18145 [2022-01-18 13:28:04,909 INFO L226 Difference]: Without dead ends: 17966 [2022-01-18 13:28:04,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1205, Invalid=7167, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 13:28:04,910 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 443 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:04,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 2503 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:28:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2022-01-18 13:28:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 12709. [2022-01-18 13:28:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12709 states, 12708 states have (on average 3.054453887315077) internal successors, (38816), 12708 states have internal predecessors, (38816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12709 states to 12709 states and 38816 transitions. [2022-01-18 13:28:05,131 INFO L78 Accepts]: Start accepts. Automaton has 12709 states and 38816 transitions. Word has length 70 [2022-01-18 13:28:05,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:05,131 INFO L470 AbstractCegarLoop]: Abstraction has 12709 states and 38816 transitions. [2022-01-18 13:28:05,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12709 states and 38816 transitions. [2022-01-18 13:28:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:05,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:05,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:05,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:05,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-18 13:28:05,356 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash 350262113, now seen corresponding path program 105 times [2022-01-18 13:28:05,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:05,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150261781] [2022-01-18 13:28:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:05,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:05,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:05,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150261781] [2022-01-18 13:28:05,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150261781] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:05,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998284306] [2022-01-18 13:28:05,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:28:05,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:05,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:05,472 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:05,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 13:28:05,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:28:05,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:05,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:05,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:05,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:06,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998284306] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:06,305 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:06,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:06,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510210270] [2022-01-18 13:28:06,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:06,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:06,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:06,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:06,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:06,306 INFO L87 Difference]: Start difference. First operand 12709 states and 38816 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:08,845 INFO L93 Difference]: Finished difference Result 19869 states and 60294 transitions. [2022-01-18 13:28:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 13:28:08,845 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:08,880 INFO L225 Difference]: With dead ends: 19869 [2022-01-18 13:28:08,880 INFO L226 Difference]: Without dead ends: 19713 [2022-01-18 13:28:08,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6585 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3046, Invalid=15044, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 13:28:08,882 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 640 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:08,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 2583 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-01-18 13:28:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 12725. [2022-01-18 13:28:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 12724 states have (on average 3.054699779943414) internal successors, (38868), 12724 states have internal predecessors, (38868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-01-18 13:28:09,120 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-01-18 13:28:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:09,120 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-01-18 13:28:09,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-01-18 13:28:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:09,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:09,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:09,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:09,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-01-18 13:28:09,354 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 337818383, now seen corresponding path program 106 times [2022-01-18 13:28:09,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:09,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281214986] [2022-01-18 13:28:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:09,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:09,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:09,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281214986] [2022-01-18 13:28:09,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281214986] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:09,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662956078] [2022-01-18 13:28:09,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:28:09,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:09,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:09,442 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:09,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 13:28:09,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:28:09,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:09,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 13:28:09,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:09,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:09,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662956078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:09,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:09,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-01-18 13:28:09,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270656269] [2022-01-18 13:28:09,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:09,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 13:28:09,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 13:28:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:28:09,968 INFO L87 Difference]: Start difference. First operand 12725 states and 38868 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:11,708 INFO L93 Difference]: Finished difference Result 17204 states and 51997 transitions. [2022-01-18 13:28:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 13:28:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:11,739 INFO L225 Difference]: With dead ends: 17204 [2022-01-18 13:28:11,739 INFO L226 Difference]: Without dead ends: 17088 [2022-01-18 13:28:11,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1531, Invalid=8171, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 13:28:11,740 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 433 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:11,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 3769 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states. [2022-01-18 13:28:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 13025. [2022-01-18 13:28:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13025 states, 13024 states have (on average 3.0553593366093366) internal successors, (39793), 13024 states have internal predecessors, (39793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13025 states to 13025 states and 39793 transitions. [2022-01-18 13:28:11,968 INFO L78 Accepts]: Start accepts. Automaton has 13025 states and 39793 transitions. Word has length 70 [2022-01-18 13:28:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:11,968 INFO L470 AbstractCegarLoop]: Abstraction has 13025 states and 39793 transitions. [2022-01-18 13:28:11,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 13025 states and 39793 transitions. [2022-01-18 13:28:11,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:11,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:11,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:12,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:12,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-01-18 13:28:12,192 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:12,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash -209379389, now seen corresponding path program 107 times [2022-01-18 13:28:12,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:12,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966406610] [2022-01-18 13:28:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:12,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:12,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:12,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966406610] [2022-01-18 13:28:12,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966406610] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:12,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010063238] [2022-01-18 13:28:12,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:28:12,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:12,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:12,292 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:12,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 13:28:12,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:28:12,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:12,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:28:12,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:12,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:12,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010063238] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:12,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:12,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:28:12,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596533623] [2022-01-18 13:28:12,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:12,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:28:12,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:28:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:28:12,844 INFO L87 Difference]: Start difference. First operand 13025 states and 39793 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:13,709 INFO L93 Difference]: Finished difference Result 16384 states and 49590 transitions. [2022-01-18 13:28:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 13:28:13,709 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:13,736 INFO L225 Difference]: With dead ends: 16384 [2022-01-18 13:28:13,736 INFO L226 Difference]: Without dead ends: 16301 [2022-01-18 13:28:13,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=971, Invalid=4579, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 13:28:13,737 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 401 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:13,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 1999 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:28:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16301 states. [2022-01-18 13:28:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16301 to 12957. [2022-01-18 13:28:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 3.0548008644643407) internal successors, (39578), 12956 states have internal predecessors, (39578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 39578 transitions. [2022-01-18 13:28:14,011 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 39578 transitions. Word has length 70 [2022-01-18 13:28:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:14,012 INFO L470 AbstractCegarLoop]: Abstraction has 12957 states and 39578 transitions. [2022-01-18 13:28:14,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 39578 transitions. [2022-01-18 13:28:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:14,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:14,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:14,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:14,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:14,246 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:14,246 INFO L85 PathProgramCache]: Analyzing trace with hash -165032689, now seen corresponding path program 108 times [2022-01-18 13:28:14,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:14,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986766240] [2022-01-18 13:28:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:14,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:14,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:14,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986766240] [2022-01-18 13:28:14,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986766240] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:14,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812841179] [2022-01-18 13:28:14,366 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:28:14,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:14,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:14,367 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:14,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 13:28:14,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:28:14,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:14,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:28:14,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:14,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:15,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812841179] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:15,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:15,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:28:15,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634311524] [2022-01-18 13:28:15,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:15,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:28:15,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:28:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:28:15,139 INFO L87 Difference]: Start difference. First operand 12957 states and 39578 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:16,349 INFO L93 Difference]: Finished difference Result 16263 states and 49223 transitions. [2022-01-18 13:28:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:28:16,349 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:16,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:16,376 INFO L225 Difference]: With dead ends: 16263 [2022-01-18 13:28:16,377 INFO L226 Difference]: Without dead ends: 16144 [2022-01-18 13:28:16,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=914, Invalid=4198, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 13:28:16,378 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 365 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:16,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2630 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16144 states. [2022-01-18 13:28:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16144 to 12821. [2022-01-18 13:28:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12821 states, 12820 states have (on average 3.0533541341653665) internal successors, (39144), 12820 states have internal predecessors, (39144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12821 states to 12821 states and 39144 transitions. [2022-01-18 13:28:16,586 INFO L78 Accepts]: Start accepts. Automaton has 12821 states and 39144 transitions. Word has length 70 [2022-01-18 13:28:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:16,586 INFO L470 AbstractCegarLoop]: Abstraction has 12821 states and 39144 transitions. [2022-01-18 13:28:16,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 12821 states and 39144 transitions. [2022-01-18 13:28:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:16,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:16,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:16,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:16,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:16,821 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:16,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1320297077, now seen corresponding path program 109 times [2022-01-18 13:28:16,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:16,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298843056] [2022-01-18 13:28:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:16,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:16,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:16,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298843056] [2022-01-18 13:28:16,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298843056] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:16,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237878926] [2022-01-18 13:28:16,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:28:16,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:16,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:16,943 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:16,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 13:28:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:17,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:17,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:17,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:17,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237878926] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:17,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:17,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:17,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696657858] [2022-01-18 13:28:17,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:17,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:17,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:17,762 INFO L87 Difference]: Start difference. First operand 12821 states and 39144 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:21,234 INFO L93 Difference]: Finished difference Result 22213 states and 67364 transitions. [2022-01-18 13:28:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 13:28:21,234 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:21,273 INFO L225 Difference]: With dead ends: 22213 [2022-01-18 13:28:21,273 INFO L226 Difference]: Without dead ends: 22073 [2022-01-18 13:28:21,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7399 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3723, Invalid=15737, Unknown=0, NotChecked=0, Total=19460 [2022-01-18 13:28:21,275 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 793 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:21,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2128 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22073 states. [2022-01-18 13:28:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22073 to 13585. [2022-01-18 13:28:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13585 states, 13584 states have (on average 3.0480712603062425) internal successors, (41405), 13584 states have internal predecessors, (41405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 41405 transitions. [2022-01-18 13:28:21,544 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 41405 transitions. Word has length 70 [2022-01-18 13:28:21,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:21,544 INFO L470 AbstractCegarLoop]: Abstraction has 13585 states and 41405 transitions. [2022-01-18 13:28:21,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 41405 transitions. [2022-01-18 13:28:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:21,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:21,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:21,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:21,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:21,779 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2086967501, now seen corresponding path program 110 times [2022-01-18 13:28:21,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:21,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357773403] [2022-01-18 13:28:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:21,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:21,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:21,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357773403] [2022-01-18 13:28:21,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357773403] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:21,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144427412] [2022-01-18 13:28:21,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:28:21,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:21,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:21,863 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:21,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 13:28:21,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:28:21,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:21,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:21,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:22,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:22,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144427412] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:22,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:22,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:22,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169061641] [2022-01-18 13:28:22,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:22,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:22,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:22,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:22,444 INFO L87 Difference]: Start difference. First operand 13585 states and 41405 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:23,380 INFO L93 Difference]: Finished difference Result 18264 states and 55207 transitions. [2022-01-18 13:28:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:28:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:23,412 INFO L225 Difference]: With dead ends: 18264 [2022-01-18 13:28:23,412 INFO L226 Difference]: Without dead ends: 18036 [2022-01-18 13:28:23,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=781, Invalid=4189, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 13:28:23,412 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 382 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:23,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 2457 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:28:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18036 states. [2022-01-18 13:28:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18036 to 13497. [2022-01-18 13:28:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 13496 states have (on average 3.04794013040901) internal successors, (41135), 13496 states have internal predecessors, (41135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 41135 transitions. [2022-01-18 13:28:23,642 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 41135 transitions. Word has length 70 [2022-01-18 13:28:23,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:23,642 INFO L470 AbstractCegarLoop]: Abstraction has 13497 states and 41135 transitions. [2022-01-18 13:28:23,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 41135 transitions. [2022-01-18 13:28:23,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:23,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:23,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:23,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:23,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:23,879 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:23,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 769385419, now seen corresponding path program 111 times [2022-01-18 13:28:23,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:23,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676771250] [2022-01-18 13:28:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:23,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:23,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:23,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676771250] [2022-01-18 13:28:23,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676771250] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:23,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756348342] [2022-01-18 13:28:23,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:28:23,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:23,988 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:23,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 13:28:24,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:28:24,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:24,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:24,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:24,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:24,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756348342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:24,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:24,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:24,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507312537] [2022-01-18 13:28:24,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:24,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:24,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:24,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:24,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:24,765 INFO L87 Difference]: Start difference. First operand 13497 states and 41135 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:25,698 INFO L93 Difference]: Finished difference Result 18174 states and 54923 transitions. [2022-01-18 13:28:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:28:25,699 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:25,732 INFO L225 Difference]: With dead ends: 18174 [2022-01-18 13:28:25,732 INFO L226 Difference]: Without dead ends: 17901 [2022-01-18 13:28:25,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=727, Invalid=4103, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 13:28:25,733 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 495 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:25,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 2116 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:28:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17901 states. [2022-01-18 13:28:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17901 to 13481. [2022-01-18 13:28:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13481 states, 13480 states have (on average 3.047106824925816) internal successors, (41075), 13480 states have internal predecessors, (41075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13481 states to 13481 states and 41075 transitions. [2022-01-18 13:28:26,003 INFO L78 Accepts]: Start accepts. Automaton has 13481 states and 41075 transitions. Word has length 70 [2022-01-18 13:28:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:26,003 INFO L470 AbstractCegarLoop]: Abstraction has 13481 states and 41075 transitions. [2022-01-18 13:28:26,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 13481 states and 41075 transitions. [2022-01-18 13:28:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:26,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:26,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:26,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-01-18 13:28:26,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:26,232 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:26,232 INFO L85 PathProgramCache]: Analyzing trace with hash -144331505, now seen corresponding path program 112 times [2022-01-18 13:28:26,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:26,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694055838] [2022-01-18 13:28:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:26,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:26,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:26,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694055838] [2022-01-18 13:28:26,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694055838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:26,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247551263] [2022-01-18 13:28:26,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:28:26,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:26,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:26,348 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:26,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 13:28:26,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:28:26,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:26,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:28:26,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:26,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:27,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247551263] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:27,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:27,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:28:27,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59987683] [2022-01-18 13:28:27,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:27,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:28:27,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:27,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:28:27,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:28:27,059 INFO L87 Difference]: Start difference. First operand 13481 states and 41075 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:27,761 INFO L93 Difference]: Finished difference Result 15223 states and 45902 transitions. [2022-01-18 13:28:27,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:28:27,762 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:27,786 INFO L225 Difference]: With dead ends: 15223 [2022-01-18 13:28:27,787 INFO L226 Difference]: Without dead ends: 15100 [2022-01-18 13:28:27,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=396, Invalid=2796, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:28:27,787 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 293 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:27,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2722 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15100 states. [2022-01-18 13:28:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15100 to 13613. [2022-01-18 13:28:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13613 states, 13612 states have (on average 3.0462826917425803) internal successors, (41466), 13612 states have internal predecessors, (41466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13613 states to 13613 states and 41466 transitions. [2022-01-18 13:28:27,990 INFO L78 Accepts]: Start accepts. Automaton has 13613 states and 41466 transitions. Word has length 70 [2022-01-18 13:28:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:27,990 INFO L470 AbstractCegarLoop]: Abstraction has 13613 states and 41466 transitions. [2022-01-18 13:28:27,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 13613 states and 41466 transitions. [2022-01-18 13:28:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:28,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:28,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:28,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:28,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-01-18 13:28:28,212 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash 776265127, now seen corresponding path program 113 times [2022-01-18 13:28:28,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:28,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921625740] [2022-01-18 13:28:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:28,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:28,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:28,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921625740] [2022-01-18 13:28:28,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921625740] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:28,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398452506] [2022-01-18 13:28:28,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:28:28,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:28,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:28,294 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:28,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 13:28:28,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:28:28,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:28,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:28,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:28,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:29,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398452506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:29,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:29,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:29,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941104550] [2022-01-18 13:28:29,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:29,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:29,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:29,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:29,172 INFO L87 Difference]: Start difference. First operand 13613 states and 41466 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:30,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:30,990 INFO L93 Difference]: Finished difference Result 19314 states and 58208 transitions. [2022-01-18 13:28:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 13:28:30,990 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:31,023 INFO L225 Difference]: With dead ends: 19314 [2022-01-18 13:28:31,023 INFO L226 Difference]: Without dead ends: 19188 [2022-01-18 13:28:31,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 13:28:31,024 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 424 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:31,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 2457 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2022-01-18 13:28:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 13641. [2022-01-18 13:28:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 13640 states have (on average 3.045967741935484) internal successors, (41547), 13640 states have internal predecessors, (41547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:31,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 41547 transitions. [2022-01-18 13:28:31,308 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 41547 transitions. Word has length 70 [2022-01-18 13:28:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:31,308 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 41547 transitions. [2022-01-18 13:28:31,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 41547 transitions. [2022-01-18 13:28:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:31,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:31,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:31,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:31,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:31,543 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash 737868383, now seen corresponding path program 114 times [2022-01-18 13:28:31,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:31,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910856140] [2022-01-18 13:28:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:31,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:31,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910856140] [2022-01-18 13:28:31,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910856140] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138874811] [2022-01-18 13:28:31,675 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:28:31,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:31,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:31,676 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:31,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 13:28:31,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:28:31,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:31,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:31,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:32,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:32,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138874811] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:32,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:32,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:32,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129104905] [2022-01-18 13:28:32,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:32,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:32,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:32,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:32,554 INFO L87 Difference]: Start difference. First operand 13641 states and 41547 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:34,167 INFO L93 Difference]: Finished difference Result 19962 states and 60120 transitions. [2022-01-18 13:28:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 13:28:34,168 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:34,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:34,202 INFO L225 Difference]: With dead ends: 19962 [2022-01-18 13:28:34,202 INFO L226 Difference]: Without dead ends: 19822 [2022-01-18 13:28:34,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1846 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=799, Invalid=5363, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 13:28:34,203 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 441 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:34,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 2494 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19822 states. [2022-01-18 13:28:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19822 to 13653. [2022-01-18 13:28:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13653 states, 13652 states have (on average 3.0465865807207737) internal successors, (41592), 13652 states have internal predecessors, (41592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13653 states to 13653 states and 41592 transitions. [2022-01-18 13:28:34,450 INFO L78 Accepts]: Start accepts. Automaton has 13653 states and 41592 transitions. Word has length 70 [2022-01-18 13:28:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:34,450 INFO L470 AbstractCegarLoop]: Abstraction has 13653 states and 41592 transitions. [2022-01-18 13:28:34,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 13653 states and 41592 transitions. [2022-01-18 13:28:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:34,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:34,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:34,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:34,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-01-18 13:28:34,681 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash -321983337, now seen corresponding path program 115 times [2022-01-18 13:28:34,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:34,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470993407] [2022-01-18 13:28:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:34,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:34,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:34,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470993407] [2022-01-18 13:28:34,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470993407] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:34,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507812315] [2022-01-18 13:28:34,794 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:28:34,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:34,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:34,795 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:34,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 13:28:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:34,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:34,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:35,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:35,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507812315] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:35,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:35,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:35,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842084130] [2022-01-18 13:28:35,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:35,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:35,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:35,574 INFO L87 Difference]: Start difference. First operand 13653 states and 41592 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:37,751 INFO L93 Difference]: Finished difference Result 20542 states and 61961 transitions. [2022-01-18 13:28:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 13:28:37,751 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:37,787 INFO L225 Difference]: With dead ends: 20542 [2022-01-18 13:28:37,787 INFO L226 Difference]: Without dead ends: 20416 [2022-01-18 13:28:37,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4450 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1732, Invalid=11150, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 13:28:37,788 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 551 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:37,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 2347 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:28:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20416 states. [2022-01-18 13:28:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20416 to 13721. [2022-01-18 13:28:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13721 states, 13720 states have (on average 3.0462827988338192) internal successors, (41795), 13720 states have internal predecessors, (41795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13721 states to 13721 states and 41795 transitions. [2022-01-18 13:28:38,035 INFO L78 Accepts]: Start accepts. Automaton has 13721 states and 41795 transitions. Word has length 70 [2022-01-18 13:28:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:38,035 INFO L470 AbstractCegarLoop]: Abstraction has 13721 states and 41795 transitions. [2022-01-18 13:28:38,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13721 states and 41795 transitions. [2022-01-18 13:28:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:38,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:38,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:38,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:38,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-18 13:28:38,259 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash -360380081, now seen corresponding path program 116 times [2022-01-18 13:28:38,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:38,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856234346] [2022-01-18 13:28:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:38,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:38,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:38,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856234346] [2022-01-18 13:28:38,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856234346] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:38,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017780302] [2022-01-18 13:28:38,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:28:38,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:38,379 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:38,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 13:28:38,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:28:38,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:38,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:38,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:38,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:39,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017780302] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:39,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:39,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:39,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24808206] [2022-01-18 13:28:39,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:39,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:39,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:39,198 INFO L87 Difference]: Start difference. First operand 13721 states and 41795 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:41,969 INFO L93 Difference]: Finished difference Result 21226 states and 63940 transitions. [2022-01-18 13:28:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 13:28:41,969 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:42,007 INFO L225 Difference]: With dead ends: 21226 [2022-01-18 13:28:42,007 INFO L226 Difference]: Without dead ends: 21086 [2022-01-18 13:28:42,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4333 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1756, Invalid=10900, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 13:28:42,008 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 528 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:42,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 2998 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21086 states. [2022-01-18 13:28:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21086 to 13689. [2022-01-18 13:28:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13689 states, 13688 states have (on average 3.0466832261835184) internal successors, (41703), 13688 states have internal predecessors, (41703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13689 states to 13689 states and 41703 transitions. [2022-01-18 13:28:42,255 INFO L78 Accepts]: Start accepts. Automaton has 13689 states and 41703 transitions. Word has length 70 [2022-01-18 13:28:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:42,255 INFO L470 AbstractCegarLoop]: Abstraction has 13689 states and 41703 transitions. [2022-01-18 13:28:42,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 13689 states and 41703 transitions. [2022-01-18 13:28:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:42,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:42,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:42,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:42,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:42,481 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:42,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1326068461, now seen corresponding path program 117 times [2022-01-18 13:28:42,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:42,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194415180] [2022-01-18 13:28:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:42,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:42,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194415180] [2022-01-18 13:28:42,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194415180] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075389881] [2022-01-18 13:28:42,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:28:42,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:42,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:42,593 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:42,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 13:28:42,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:28:42,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:42,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:42,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:42,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:43,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075389881] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:43,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:43,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:43,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50905994] [2022-01-18 13:28:43,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:43,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:43,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:43,421 INFO L87 Difference]: Start difference. First operand 13689 states and 41703 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:47,245 INFO L93 Difference]: Finished difference Result 23633 states and 71229 transitions. [2022-01-18 13:28:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-18 13:28:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:47,283 INFO L225 Difference]: With dead ends: 23633 [2022-01-18 13:28:47,283 INFO L226 Difference]: Without dead ends: 23493 [2022-01-18 13:28:47,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2719, Invalid=14573, Unknown=0, NotChecked=0, Total=17292 [2022-01-18 13:28:47,284 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 696 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:47,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2438 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:28:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2022-01-18 13:28:47,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 13777. [2022-01-18 13:28:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13777 states, 13776 states have (on average 3.060177119628339) internal successors, (42157), 13776 states have internal predecessors, (42157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 42157 transitions. [2022-01-18 13:28:47,533 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 42157 transitions. Word has length 70 [2022-01-18 13:28:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:47,533 INFO L470 AbstractCegarLoop]: Abstraction has 13777 states and 42157 transitions. [2022-01-18 13:28:47,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 42157 transitions. [2022-01-18 13:28:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:47,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:47,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:47,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:47,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:47,768 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:47,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1942574281, now seen corresponding path program 118 times [2022-01-18 13:28:47,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:47,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031223482] [2022-01-18 13:28:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:47,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:47,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:47,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031223482] [2022-01-18 13:28:47,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031223482] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:47,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062037351] [2022-01-18 13:28:47,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:28:47,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:47,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:47,892 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:47,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 13:28:48,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:28:48,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:48,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:28:48,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:48,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:48,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062037351] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:48,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:48,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:28:48,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985235108] [2022-01-18 13:28:48,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:48,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:28:48,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:28:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:28:48,644 INFO L87 Difference]: Start difference. First operand 13777 states and 42157 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:51,365 INFO L93 Difference]: Finished difference Result 18748 states and 56815 transitions. [2022-01-18 13:28:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-01-18 13:28:51,365 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:51,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:51,398 INFO L225 Difference]: With dead ends: 18748 [2022-01-18 13:28:51,398 INFO L226 Difference]: Without dead ends: 18670 [2022-01-18 13:28:51,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8162 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2949, Invalid=20307, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 13:28:51,400 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 675 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:51,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 3238 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:28:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18670 states. [2022-01-18 13:28:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18670 to 14421. [2022-01-18 13:28:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14421 states, 14420 states have (on average 3.0624133148404993) internal successors, (44160), 14420 states have internal predecessors, (44160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14421 states to 14421 states and 44160 transitions. [2022-01-18 13:28:51,743 INFO L78 Accepts]: Start accepts. Automaton has 14421 states and 44160 transitions. Word has length 70 [2022-01-18 13:28:51,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:51,743 INFO L470 AbstractCegarLoop]: Abstraction has 14421 states and 44160 transitions. [2022-01-18 13:28:51,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 14421 states and 44160 transitions. [2022-01-18 13:28:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:51,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:51,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:51,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-01-18 13:28:51,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-01-18 13:28:51,971 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:51,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2012351217, now seen corresponding path program 119 times [2022-01-18 13:28:51,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:51,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110166800] [2022-01-18 13:28:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:51,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:52,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:52,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110166800] [2022-01-18 13:28:52,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110166800] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:52,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821941057] [2022-01-18 13:28:52,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:28:52,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:52,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:52,095 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:52,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 13:28:52,208 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:28:52,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:52,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:28:52,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:52,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:52,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821941057] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:52,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:52,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:28:52,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275170735] [2022-01-18 13:28:52,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:52,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:28:52,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:28:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:28:52,668 INFO L87 Difference]: Start difference. First operand 14421 states and 44160 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:53,640 INFO L93 Difference]: Finished difference Result 15479 states and 47015 transitions. [2022-01-18 13:28:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:28:53,641 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:53,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:53,667 INFO L225 Difference]: With dead ends: 15479 [2022-01-18 13:28:53,667 INFO L226 Difference]: Without dead ends: 15416 [2022-01-18 13:28:53,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=607, Invalid=3683, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 13:28:53,668 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 396 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:53,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 2355 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:28:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15416 states. [2022-01-18 13:28:53,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15416 to 14377. [2022-01-18 13:28:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14377 states, 14376 states have (on average 3.062813021702838) internal successors, (44031), 14376 states have internal predecessors, (44031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14377 states to 14377 states and 44031 transitions. [2022-01-18 13:28:53,882 INFO L78 Accepts]: Start accepts. Automaton has 14377 states and 44031 transitions. Word has length 70 [2022-01-18 13:28:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:53,882 INFO L470 AbstractCegarLoop]: Abstraction has 14377 states and 44031 transitions. [2022-01-18 13:28:53,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 14377 states and 44031 transitions. [2022-01-18 13:28:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:53,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:53,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:53,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:54,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:54,115 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash 570526483, now seen corresponding path program 120 times [2022-01-18 13:28:54,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:54,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11751237] [2022-01-18 13:28:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:54,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:54,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11751237] [2022-01-18 13:28:54,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11751237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332020751] [2022-01-18 13:28:54,243 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:28:54,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:54,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:54,244 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:54,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 13:28:54,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:28:54,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:28:54,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:54,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:54,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:55,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332020751] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:55,107 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:55,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:55,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001827485] [2022-01-18 13:28:55,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:55,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:55,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:55,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:55,108 INFO L87 Difference]: Start difference. First operand 14377 states and 44031 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:56,981 INFO L93 Difference]: Finished difference Result 20394 states and 61586 transitions. [2022-01-18 13:28:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 13:28:56,981 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:28:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:57,017 INFO L225 Difference]: With dead ends: 20394 [2022-01-18 13:28:57,017 INFO L226 Difference]: Without dead ends: 20260 [2022-01-18 13:28:57,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=828, Invalid=5492, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 13:28:57,018 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 421 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:57,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 2680 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20260 states. [2022-01-18 13:28:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20260 to 14373. [2022-01-18 13:28:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14373 states, 14372 states have (on average 3.0631784024492066) internal successors, (44024), 14372 states have internal predecessors, (44024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14373 states to 14373 states and 44024 transitions. [2022-01-18 13:28:57,313 INFO L78 Accepts]: Start accepts. Automaton has 14373 states and 44024 transitions. Word has length 70 [2022-01-18 13:28:57,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:57,313 INFO L470 AbstractCegarLoop]: Abstraction has 14373 states and 44024 transitions. [2022-01-18 13:28:57,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 14373 states and 44024 transitions. [2022-01-18 13:28:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:28:57,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:57,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:57,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-01-18 13:28:57,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:57,545 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:57,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1182430989, now seen corresponding path program 121 times [2022-01-18 13:28:57,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:57,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264836430] [2022-01-18 13:28:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:57,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:57,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:57,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264836430] [2022-01-18 13:28:57,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264836430] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:28:57,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29744620] [2022-01-18 13:28:57,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:28:57,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:28:57,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:28:57,673 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:28:57,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 13:28:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:57,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:28:57,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:28:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:58,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:28:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:58,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29744620] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:28:58,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:28:58,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:28:58,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665978709] [2022-01-18 13:28:58,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:28:58,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:28:58,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:28:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:28:58,546 INFO L87 Difference]: Start difference. First operand 14373 states and 44024 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:00,211 INFO L93 Difference]: Finished difference Result 20356 states and 61496 transitions. [2022-01-18 13:29:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 13:29:00,211 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:00,246 INFO L225 Difference]: With dead ends: 20356 [2022-01-18 13:29:00,246 INFO L226 Difference]: Without dead ends: 20206 [2022-01-18 13:29:00,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=924, Invalid=6048, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 13:29:00,247 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 454 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:00,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 2789 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:29:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20206 states. [2022-01-18 13:29:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20206 to 14345. [2022-01-18 13:29:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14345 states, 14344 states have (on average 3.0632320133853876) internal successors, (43939), 14344 states have internal predecessors, (43939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:00,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14345 states to 14345 states and 43939 transitions. [2022-01-18 13:29:00,509 INFO L78 Accepts]: Start accepts. Automaton has 14345 states and 43939 transitions. Word has length 70 [2022-01-18 13:29:00,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:00,509 INFO L470 AbstractCegarLoop]: Abstraction has 14345 states and 43939 transitions. [2022-01-18 13:29:00,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:00,509 INFO L276 IsEmpty]: Start isEmpty. Operand 14345 states and 43939 transitions. [2022-01-18 13:29:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:00,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:00,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:00,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:00,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:00,745 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:00,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1226777689, now seen corresponding path program 122 times [2022-01-18 13:29:00,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:00,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494109993] [2022-01-18 13:29:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:00,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:00,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:00,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494109993] [2022-01-18 13:29:00,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494109993] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:00,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179900100] [2022-01-18 13:29:00,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:29:00,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:00,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:00,870 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:00,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-18 13:29:00,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:29:00,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:00,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:00,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:01,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:01,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179900100] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:01,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:01,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:01,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130275098] [2022-01-18 13:29:01,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:01,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:01,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:01,743 INFO L87 Difference]: Start difference. First operand 14345 states and 43939 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:03,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:03,330 INFO L93 Difference]: Finished difference Result 19962 states and 60523 transitions. [2022-01-18 13:29:03,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:29:03,331 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:03,365 INFO L225 Difference]: With dead ends: 19962 [2022-01-18 13:29:03,366 INFO L226 Difference]: Without dead ends: 19783 [2022-01-18 13:29:03,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 13:29:03,366 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 427 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:03,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 2424 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:29:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19783 states. [2022-01-18 13:29:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19783 to 14317. [2022-01-18 13:29:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14317 states, 14316 states have (on average 3.062727018720313) internal successors, (43846), 14316 states have internal predecessors, (43846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14317 states to 14317 states and 43846 transitions. [2022-01-18 13:29:03,622 INFO L78 Accepts]: Start accepts. Automaton has 14317 states and 43846 transitions. Word has length 70 [2022-01-18 13:29:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:03,623 INFO L470 AbstractCegarLoop]: Abstraction has 14317 states and 43846 transitions. [2022-01-18 13:29:03,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14317 states and 43846 transitions. [2022-01-18 13:29:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:03,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:03,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:03,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:03,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:03,847 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:03,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2058340145, now seen corresponding path program 123 times [2022-01-18 13:29:03,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:03,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104765276] [2022-01-18 13:29:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:03,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:03,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:03,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104765276] [2022-01-18 13:29:03,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104765276] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:03,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857357142] [2022-01-18 13:29:03,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:29:03,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:03,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:03,967 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:03,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-18 13:29:04,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:29:04,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:04,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:29:04,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:04,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:04,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857357142] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:04,691 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:04,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:29:04,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639926498] [2022-01-18 13:29:04,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:04,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:29:04,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:04,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:29:04,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:29:04,692 INFO L87 Difference]: Start difference. First operand 14317 states and 43846 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:05,634 INFO L93 Difference]: Finished difference Result 17980 states and 54647 transitions. [2022-01-18 13:29:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:29:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:05,664 INFO L225 Difference]: With dead ends: 17980 [2022-01-18 13:29:05,664 INFO L226 Difference]: Without dead ends: 17797 [2022-01-18 13:29:05,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 13:29:05,665 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 443 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:05,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 2186 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:29:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2022-01-18 13:29:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 14341. [2022-01-18 13:29:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14341 states, 14340 states have (on average 3.059135285913529) internal successors, (43868), 14340 states have internal predecessors, (43868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 43868 transitions. [2022-01-18 13:29:05,904 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 43868 transitions. Word has length 70 [2022-01-18 13:29:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:05,905 INFO L470 AbstractCegarLoop]: Abstraction has 14341 states and 43868 transitions. [2022-01-18 13:29:05,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 43868 transitions. [2022-01-18 13:29:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:05,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:05,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:05,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-01-18 13:29:06,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-01-18 13:29:06,132 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:06,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1316030519, now seen corresponding path program 124 times [2022-01-18 13:29:06,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:06,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373629786] [2022-01-18 13:29:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:06,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:06,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373629786] [2022-01-18 13:29:06,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373629786] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401008024] [2022-01-18 13:29:06,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:29:06,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:06,254 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:06,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-18 13:29:06,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:29:06,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:06,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:29:06,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:06,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:06,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401008024] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:06,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:06,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:29:06,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858696184] [2022-01-18 13:29:06,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:06,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:29:06,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:29:06,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:29:06,887 INFO L87 Difference]: Start difference. First operand 14341 states and 43868 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:08,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:08,209 INFO L93 Difference]: Finished difference Result 23806 states and 72311 transitions. [2022-01-18 13:29:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 13:29:08,209 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:08,251 INFO L225 Difference]: With dead ends: 23806 [2022-01-18 13:29:08,251 INFO L226 Difference]: Without dead ends: 23707 [2022-01-18 13:29:08,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=920, Invalid=5886, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 13:29:08,252 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 501 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:08,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 2888 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:29:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23707 states. [2022-01-18 13:29:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23707 to 14569. [2022-01-18 13:29:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14569 states, 14568 states have (on average 3.061161449752883) internal successors, (44595), 14568 states have internal predecessors, (44595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14569 states to 14569 states and 44595 transitions. [2022-01-18 13:29:08,541 INFO L78 Accepts]: Start accepts. Automaton has 14569 states and 44595 transitions. Word has length 70 [2022-01-18 13:29:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:08,541 INFO L470 AbstractCegarLoop]: Abstraction has 14569 states and 44595 transitions. [2022-01-18 13:29:08,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 14569 states and 44595 transitions. [2022-01-18 13:29:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:08,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:08,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:08,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-01-18 13:29:08,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-01-18 13:29:08,776 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1354427263, now seen corresponding path program 125 times [2022-01-18 13:29:08,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:08,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493961909] [2022-01-18 13:29:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:08,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:08,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:08,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493961909] [2022-01-18 13:29:08,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493961909] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:08,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117013533] [2022-01-18 13:29:08,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:29:08,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:08,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:08,890 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:08,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-18 13:29:09,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:29:09,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:09,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:09,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:09,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:09,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117013533] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:09,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:09,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:09,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531542770] [2022-01-18 13:29:09,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:09,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:09,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:09,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:09,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:09,672 INFO L87 Difference]: Start difference. First operand 14569 states and 44595 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:11,870 INFO L93 Difference]: Finished difference Result 27149 states and 82633 transitions. [2022-01-18 13:29:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 13:29:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:11,922 INFO L225 Difference]: With dead ends: 27149 [2022-01-18 13:29:11,922 INFO L226 Difference]: Without dead ends: 27009 [2022-01-18 13:29:11,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4430 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1891, Invalid=10765, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 13:29:11,923 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 690 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:11,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 2586 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:29:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27009 states. [2022-01-18 13:29:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27009 to 14625. [2022-01-18 13:29:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14625 states, 14624 states have (on average 3.061337527352298) internal successors, (44769), 14624 states have internal predecessors, (44769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14625 states to 14625 states and 44769 transitions. [2022-01-18 13:29:12,321 INFO L78 Accepts]: Start accepts. Automaton has 14625 states and 44769 transitions. Word has length 70 [2022-01-18 13:29:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:12,322 INFO L470 AbstractCegarLoop]: Abstraction has 14625 states and 44769 transitions. [2022-01-18 13:29:12,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 14625 states and 44769 transitions. [2022-01-18 13:29:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:12,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:12,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:12,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-01-18 13:29:12,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-01-18 13:29:12,562 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:12,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1880688313, now seen corresponding path program 126 times [2022-01-18 13:29:12,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:12,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472954256] [2022-01-18 13:29:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:12,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:12,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:12,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472954256] [2022-01-18 13:29:12,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472954256] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:12,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776364085] [2022-01-18 13:29:12,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:29:12,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:12,693 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:12,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-18 13:29:12,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:29:12,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:12,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:12,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:12,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:13,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776364085] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:13,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:13,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:13,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526604959] [2022-01-18 13:29:13,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:13,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:13,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:13,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:13,279 INFO L87 Difference]: Start difference. First operand 14625 states and 44769 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:16,954 INFO L93 Difference]: Finished difference Result 27837 states and 84927 transitions. [2022-01-18 13:29:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 13:29:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:17,008 INFO L225 Difference]: With dead ends: 27837 [2022-01-18 13:29:17,008 INFO L226 Difference]: Without dead ends: 27711 [2022-01-18 13:29:17,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10675 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3694, Invalid=23366, Unknown=0, NotChecked=0, Total=27060 [2022-01-18 13:29:17,011 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 785 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:17,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 2732 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:29:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27711 states. [2022-01-18 13:29:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27711 to 14513. [2022-01-18 13:29:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14513 states, 14512 states have (on average 3.0601571113561192) internal successors, (44409), 14512 states have internal predecessors, (44409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14513 states to 14513 states and 44409 transitions. [2022-01-18 13:29:17,359 INFO L78 Accepts]: Start accepts. Automaton has 14513 states and 44409 transitions. Word has length 70 [2022-01-18 13:29:17,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:17,359 INFO L470 AbstractCegarLoop]: Abstraction has 14513 states and 44409 transitions. [2022-01-18 13:29:17,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 14513 states and 44409 transitions. [2022-01-18 13:29:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:17,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:17,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:17,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:17,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-01-18 13:29:17,594 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1842291569, now seen corresponding path program 127 times [2022-01-18 13:29:17,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:17,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692044253] [2022-01-18 13:29:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:17,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:17,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:17,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692044253] [2022-01-18 13:29:17,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692044253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:17,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625025634] [2022-01-18 13:29:17,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:29:17,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:17,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:17,733 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:17,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-18 13:29:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:17,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:17,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:18,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:18,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625025634] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:18,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:18,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:18,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212825268] [2022-01-18 13:29:18,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:18,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:18,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:18,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:18,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:18,598 INFO L87 Difference]: Start difference. First operand 14513 states and 44409 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:23,318 INFO L93 Difference]: Finished difference Result 28353 states and 86292 transitions. [2022-01-18 13:29:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-18 13:29:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:23,531 INFO L225 Difference]: With dead ends: 28353 [2022-01-18 13:29:23,531 INFO L226 Difference]: Without dead ends: 28213 [2022-01-18 13:29:23,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11311 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4137, Invalid=24593, Unknown=0, NotChecked=0, Total=28730 [2022-01-18 13:29:23,532 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 852 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:23,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 3187 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:29:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28213 states. [2022-01-18 13:29:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28213 to 14497. [2022-01-18 13:29:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14497 states, 14496 states have (on average 3.0599475717439293) internal successors, (44357), 14496 states have internal predecessors, (44357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14497 states to 14497 states and 44357 transitions. [2022-01-18 13:29:23,811 INFO L78 Accepts]: Start accepts. Automaton has 14497 states and 44357 transitions. Word has length 70 [2022-01-18 13:29:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:23,812 INFO L470 AbstractCegarLoop]: Abstraction has 14497 states and 44357 transitions. [2022-01-18 13:29:23,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 14497 states and 44357 transitions. [2022-01-18 13:29:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:23,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:23,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:23,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:24,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:24,049 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:24,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:24,050 INFO L85 PathProgramCache]: Analyzing trace with hash 876603189, now seen corresponding path program 128 times [2022-01-18 13:29:24,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:24,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558907297] [2022-01-18 13:29:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:24,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:24,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:24,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558907297] [2022-01-18 13:29:24,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558907297] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:24,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070857322] [2022-01-18 13:29:24,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:29:24,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:24,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:24,135 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:24,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-18 13:29:24,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:29:24,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:24,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:24,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:24,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:24,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070857322] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:24,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:24,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:24,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616408656] [2022-01-18 13:29:24,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:24,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:24,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:24,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:24,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:24,856 INFO L87 Difference]: Start difference. First operand 14497 states and 44357 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:29,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:29,831 INFO L93 Difference]: Finished difference Result 29139 states and 88557 transitions. [2022-01-18 13:29:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-01-18 13:29:29,831 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:29,885 INFO L225 Difference]: With dead ends: 29139 [2022-01-18 13:29:29,885 INFO L226 Difference]: Without dead ends: 28999 [2022-01-18 13:29:29,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18841 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6774, Invalid=37536, Unknown=0, NotChecked=0, Total=44310 [2022-01-18 13:29:29,888 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1000 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:29,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 2992 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:29:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28999 states. [2022-01-18 13:29:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28999 to 14293. [2022-01-18 13:29:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14293 states, 14292 states have (on average 3.0542961097117267) internal successors, (43652), 14292 states have internal predecessors, (43652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 43652 transitions. [2022-01-18 13:29:30,207 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 43652 transitions. Word has length 70 [2022-01-18 13:29:30,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:30,207 INFO L470 AbstractCegarLoop]: Abstraction has 14293 states and 43652 transitions. [2022-01-18 13:29:30,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:30,207 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 43652 transitions. [2022-01-18 13:29:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:30,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:30,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:30,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:30,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-01-18 13:29:30,442 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash -149721365, now seen corresponding path program 129 times [2022-01-18 13:29:30,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:30,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155835787] [2022-01-18 13:29:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:30,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:30,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:30,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155835787] [2022-01-18 13:29:30,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155835787] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:30,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559866421] [2022-01-18 13:29:30,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:29:30,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:30,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:30,542 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:30,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-18 13:29:30,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:29:30,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:30,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:30,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:30,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:31,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559866421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:31,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:31,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:31,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225644898] [2022-01-18 13:29:31,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:31,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:31,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:31,143 INFO L87 Difference]: Start difference. First operand 14293 states and 43652 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:32,444 INFO L93 Difference]: Finished difference Result 15416 states and 46706 transitions. [2022-01-18 13:29:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 13:29:32,445 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:32,470 INFO L225 Difference]: With dead ends: 15416 [2022-01-18 13:29:32,471 INFO L226 Difference]: Without dead ends: 15338 [2022-01-18 13:29:32,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 13:29:32,472 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 543 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:32,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 2021 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:29:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15338 states. [2022-01-18 13:29:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15338 to 12497. [2022-01-18 13:29:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12497 states, 12496 states have (on average 3.036571702944942) internal successors, (37945), 12496 states have internal predecessors, (37945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 37945 transitions. [2022-01-18 13:29:32,732 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 37945 transitions. Word has length 70 [2022-01-18 13:29:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:32,733 INFO L470 AbstractCegarLoop]: Abstraction has 12497 states and 37945 transitions. [2022-01-18 13:29:32,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 37945 transitions. [2022-01-18 13:29:32,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:32,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:32,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:32,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-01-18 13:29:32,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-01-18 13:29:32,967 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:32,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1521769163, now seen corresponding path program 130 times [2022-01-18 13:29:32,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:32,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685826186] [2022-01-18 13:29:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:32,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:33,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:33,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685826186] [2022-01-18 13:29:33,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685826186] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:33,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600641818] [2022-01-18 13:29:33,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:29:33,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:33,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:33,058 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:33,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-18 13:29:33,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:29:33,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:33,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:29:33,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:33,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:33,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600641818] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:33,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:33,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:29:33,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063378222] [2022-01-18 13:29:33,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:33,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:29:33,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:29:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:29:33,567 INFO L87 Difference]: Start difference. First operand 12497 states and 37945 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:34,545 INFO L93 Difference]: Finished difference Result 20350 states and 61283 transitions. [2022-01-18 13:29:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 13:29:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:34,585 INFO L225 Difference]: With dead ends: 20350 [2022-01-18 13:29:34,585 INFO L226 Difference]: Without dead ends: 20219 [2022-01-18 13:29:34,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=965, Invalid=5515, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 13:29:34,586 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 577 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:34,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2169 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:29:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2022-01-18 13:29:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 12461. [2022-01-18 13:29:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12461 states, 12460 states have (on average 3.0380417335473515) internal successors, (37854), 12460 states have internal predecessors, (37854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 37854 transitions. [2022-01-18 13:29:34,855 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 37854 transitions. Word has length 70 [2022-01-18 13:29:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:34,856 INFO L470 AbstractCegarLoop]: Abstraction has 12461 states and 37854 transitions. [2022-01-18 13:29:34,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 37854 transitions. [2022-01-18 13:29:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:34,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:34,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:34,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-01-18 13:29:35,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:35,078 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1312213585, now seen corresponding path program 131 times [2022-01-18 13:29:35,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:35,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649481548] [2022-01-18 13:29:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:35,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:35,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:35,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649481548] [2022-01-18 13:29:35,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649481548] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:35,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538990206] [2022-01-18 13:29:35,170 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:29:35,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:35,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:35,171 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:35,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-18 13:29:35,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:29:35,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:35,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:29:35,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:35,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:29:35,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538990206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:35,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 13:29:35,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-01-18 13:29:35,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767688516] [2022-01-18 13:29:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:35,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 13:29:35,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 13:29:35,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-01-18 13:29:35,548 INFO L87 Difference]: Start difference. First operand 12461 states and 37854 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:35,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:35,708 INFO L93 Difference]: Finished difference Result 12624 states and 38234 transitions. [2022-01-18 13:29:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 13:29:35,708 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:35,730 INFO L225 Difference]: With dead ends: 12624 [2022-01-18 13:29:35,730 INFO L226 Difference]: Without dead ends: 12337 [2022-01-18 13:29:35,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:29:35,730 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 122 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:35,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1099 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:29:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12337 states. [2022-01-18 13:29:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12337 to 12177. [2022-01-18 13:29:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12177 states, 12176 states have (on average 3.019464520367937) internal successors, (36765), 12176 states have internal predecessors, (36765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 36765 transitions. [2022-01-18 13:29:35,893 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 36765 transitions. Word has length 70 [2022-01-18 13:29:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:35,893 INFO L470 AbstractCegarLoop]: Abstraction has 12177 states and 36765 transitions. [2022-01-18 13:29:35,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 36765 transitions. [2022-01-18 13:29:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:35,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:35,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:35,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-01-18 13:29:36,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:36,123 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 961642929, now seen corresponding path program 132 times [2022-01-18 13:29:36,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:36,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607830941] [2022-01-18 13:29:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:36,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:36,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:36,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607830941] [2022-01-18 13:29:36,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607830941] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:36,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148232322] [2022-01-18 13:29:36,243 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:29:36,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:36,244 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:36,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-18 13:29:36,364 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:29:36,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:36,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:36,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:36,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:36,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148232322] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:36,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:36,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:36,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294414135] [2022-01-18 13:29:36,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:36,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:36,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:36,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:36,884 INFO L87 Difference]: Start difference. First operand 12177 states and 36765 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:38,288 INFO L93 Difference]: Finished difference Result 21497 states and 64789 transitions. [2022-01-18 13:29:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 13:29:38,288 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:38,325 INFO L225 Difference]: With dead ends: 21497 [2022-01-18 13:29:38,325 INFO L226 Difference]: Without dead ends: 21227 [2022-01-18 13:29:38,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2570 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=915, Invalid=6741, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 13:29:38,326 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 570 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:38,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 2439 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:29:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21227 states. [2022-01-18 13:29:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21227 to 12001. [2022-01-18 13:29:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12001 states, 12000 states have (on average 3.0064166666666665) internal successors, (36077), 12000 states have internal predecessors, (36077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 36077 transitions. [2022-01-18 13:29:38,560 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 36077 transitions. Word has length 70 [2022-01-18 13:29:38,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:38,560 INFO L470 AbstractCegarLoop]: Abstraction has 12001 states and 36077 transitions. [2022-01-18 13:29:38,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 36077 transitions. [2022-01-18 13:29:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:38,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:38,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:38,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:38,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable164 [2022-01-18 13:29:38,778 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:38,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:38,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1882239561, now seen corresponding path program 133 times [2022-01-18 13:29:38,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:38,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275167050] [2022-01-18 13:29:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:38,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:38,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:38,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275167050] [2022-01-18 13:29:38,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275167050] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:38,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615229947] [2022-01-18 13:29:38,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:29:38,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:38,863 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:38,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-18 13:29:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:38,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:38,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:39,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:39,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615229947] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:39,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:39,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:39,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413469517] [2022-01-18 13:29:39,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:39,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:39,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:39,644 INFO L87 Difference]: Start difference. First operand 12001 states and 36077 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:41,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:41,154 INFO L93 Difference]: Finished difference Result 21117 states and 63584 transitions. [2022-01-18 13:29:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 13:29:41,154 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:41,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:41,190 INFO L225 Difference]: With dead ends: 21117 [2022-01-18 13:29:41,190 INFO L226 Difference]: Without dead ends: 20843 [2022-01-18 13:29:41,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=976, Invalid=6680, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 13:29:41,192 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 545 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:41,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 2377 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:29:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20843 states. [2022-01-18 13:29:41,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20843 to 11889. [2022-01-18 13:29:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11889 states, 11888 states have (on average 2.947257738896366) internal successors, (35037), 11888 states have internal predecessors, (35037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11889 states to 11889 states and 35037 transitions. [2022-01-18 13:29:41,419 INFO L78 Accepts]: Start accepts. Automaton has 11889 states and 35037 transitions. Word has length 70 [2022-01-18 13:29:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:41,473 INFO L470 AbstractCegarLoop]: Abstraction has 11889 states and 35037 transitions. [2022-01-18 13:29:41,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:41,473 INFO L276 IsEmpty]: Start isEmpty. Operand 11889 states and 35037 transitions. [2022-01-18 13:29:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:41,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:41,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:41,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:41,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:41,702 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:41,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash -866153785, now seen corresponding path program 134 times [2022-01-18 13:29:41,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:41,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025407686] [2022-01-18 13:29:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:41,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:41,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:41,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025407686] [2022-01-18 13:29:41,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025407686] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:41,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201394765] [2022-01-18 13:29:41,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:29:41,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:41,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:41,836 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:41,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-18 13:29:41,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:29:41,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:41,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:41,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:42,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:42,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201394765] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:42,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:42,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 13:29:42,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465720091] [2022-01-18 13:29:42,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:42,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 13:29:42,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:42,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 13:29:42,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:29:42,672 INFO L87 Difference]: Start difference. First operand 11889 states and 35037 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:44,254 INFO L93 Difference]: Finished difference Result 21857 states and 64947 transitions. [2022-01-18 13:29:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 13:29:44,254 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:44,293 INFO L225 Difference]: With dead ends: 21857 [2022-01-18 13:29:44,293 INFO L226 Difference]: Without dead ends: 21691 [2022-01-18 13:29:44,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1037, Invalid=6103, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 13:29:44,295 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 472 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:44,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 2425 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:29:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21691 states. [2022-01-18 13:29:44,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21691 to 11861. [2022-01-18 13:29:44,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11861 states, 11860 states have (on average 2.948735244519393) internal successors, (34972), 11860 states have internal predecessors, (34972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11861 states to 11861 states and 34972 transitions. [2022-01-18 13:29:44,531 INFO L78 Accepts]: Start accepts. Automaton has 11861 states and 34972 transitions. Word has length 70 [2022-01-18 13:29:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:44,531 INFO L470 AbstractCegarLoop]: Abstraction has 11861 states and 34972 transitions. [2022-01-18 13:29:44,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 11861 states and 34972 transitions. [2022-01-18 13:29:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:44,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:44,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:44,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-01-18 13:29:44,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-01-18 13:29:44,751 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:44,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1964973657, now seen corresponding path program 135 times [2022-01-18 13:29:44,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:44,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443526795] [2022-01-18 13:29:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:44,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:44,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443526795] [2022-01-18 13:29:44,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443526795] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302453119] [2022-01-18 13:29:44,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:29:44,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:44,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:44,879 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:44,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-18 13:29:45,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:29:45,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:45,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:45,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:45,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:45,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302453119] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:45,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:45,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 13:29:45,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614966156] [2022-01-18 13:29:45,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:45,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 13:29:45,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 13:29:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 13:29:45,738 INFO L87 Difference]: Start difference. First operand 11861 states and 34972 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:47,167 INFO L93 Difference]: Finished difference Result 14438 states and 41939 transitions. [2022-01-18 13:29:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 13:29:47,167 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:47,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:47,191 INFO L225 Difference]: With dead ends: 14438 [2022-01-18 13:29:47,191 INFO L226 Difference]: Without dead ends: 14321 [2022-01-18 13:29:47,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=812, Invalid=5508, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 13:29:47,192 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 476 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:47,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 2416 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:29:47,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2022-01-18 13:29:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 11965. [2022-01-18 13:29:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11965 states, 11964 states have (on average 2.9486793714476764) internal successors, (35278), 11964 states have internal predecessors, (35278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 35278 transitions. [2022-01-18 13:29:47,401 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 35278 transitions. Word has length 70 [2022-01-18 13:29:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:47,402 INFO L470 AbstractCegarLoop]: Abstraction has 11965 states and 35278 transitions. [2022-01-18 13:29:47,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:47,402 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 35278 transitions. [2022-01-18 13:29:47,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:47,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:47,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:47,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:47,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:47,631 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash 866725193, now seen corresponding path program 136 times [2022-01-18 13:29:47,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:47,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107801486] [2022-01-18 13:29:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:47,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:47,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:47,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107801486] [2022-01-18 13:29:47,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107801486] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:47,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179924201] [2022-01-18 13:29:47,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:29:47,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:47,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:47,760 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:47,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-18 13:29:47,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:29:47,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:47,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:29:47,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:48,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:48,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179924201] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:48,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:48,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:29:48,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2469118] [2022-01-18 13:29:48,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:48,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:29:48,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:48,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:29:48,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:29:48,508 INFO L87 Difference]: Start difference. First operand 11965 states and 35278 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:50,008 INFO L93 Difference]: Finished difference Result 14444 states and 42080 transitions. [2022-01-18 13:29:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 13:29:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:50,033 INFO L225 Difference]: With dead ends: 14444 [2022-01-18 13:29:50,033 INFO L226 Difference]: Without dead ends: 14354 [2022-01-18 13:29:50,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2297 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1034, Invalid=6106, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 13:29:50,034 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 501 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:50,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 2619 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:29:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2022-01-18 13:29:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 11997. [2022-01-18 13:29:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11997 states, 11996 states have (on average 2.948816272090697) internal successors, (35374), 11996 states have internal predecessors, (35374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11997 states to 11997 states and 35374 transitions. [2022-01-18 13:29:50,215 INFO L78 Accepts]: Start accepts. Automaton has 11997 states and 35374 transitions. Word has length 70 [2022-01-18 13:29:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:50,215 INFO L470 AbstractCegarLoop]: Abstraction has 11997 states and 35374 transitions. [2022-01-18 13:29:50,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 11997 states and 35374 transitions. [2022-01-18 13:29:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:50,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:50,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:50,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:50,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-01-18 13:29:50,443 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:50,443 INFO L85 PathProgramCache]: Analyzing trace with hash -98963187, now seen corresponding path program 137 times [2022-01-18 13:29:50,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:50,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840473347] [2022-01-18 13:29:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:50,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:50,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:50,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840473347] [2022-01-18 13:29:50,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840473347] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:50,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432706860] [2022-01-18 13:29:50,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:29:50,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:50,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:50,586 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:50,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-18 13:29:50,716 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:29:50,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:50,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:29:50,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:50,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:51,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432706860] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:51,124 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:51,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-01-18 13:29:51,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185992117] [2022-01-18 13:29:51,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:51,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:29:51,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:29:51,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:29:51,125 INFO L87 Difference]: Start difference. First operand 11997 states and 35374 transitions. Second operand has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:52,175 INFO L93 Difference]: Finished difference Result 16331 states and 48156 transitions. [2022-01-18 13:29:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 13:29:52,175 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:52,201 INFO L225 Difference]: With dead ends: 16331 [2022-01-18 13:29:52,202 INFO L226 Difference]: Without dead ends: 16245 [2022-01-18 13:29:52,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1375, Invalid=6107, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 13:29:52,203 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 544 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:52,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 2075 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:29:52,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16245 states. [2022-01-18 13:29:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16245 to 12441. [2022-01-18 13:29:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12441 states, 12440 states have (on average 2.9558681672025724) internal successors, (36771), 12440 states have internal predecessors, (36771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 36771 transitions. [2022-01-18 13:29:52,438 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 36771 transitions. Word has length 70 [2022-01-18 13:29:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:52,438 INFO L470 AbstractCegarLoop]: Abstraction has 12441 states and 36771 transitions. [2022-01-18 13:29:52,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 36771 transitions. [2022-01-18 13:29:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:52,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:52,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:52,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:52,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-01-18 13:29:52,661 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:52,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 133632917, now seen corresponding path program 138 times [2022-01-18 13:29:52,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:52,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269595215] [2022-01-18 13:29:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:52,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:52,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:52,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269595215] [2022-01-18 13:29:52,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269595215] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:52,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229166731] [2022-01-18 13:29:52,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:29:52,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:52,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:52,767 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:52,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-18 13:29:52,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:29:52,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:29:52,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:52,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:53,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:53,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229166731] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:53,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:53,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:29:53,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784273119] [2022-01-18 13:29:53,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:53,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:29:53,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:29:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:29:53,446 INFO L87 Difference]: Start difference. First operand 12441 states and 36771 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:56,110 INFO L93 Difference]: Finished difference Result 15186 states and 44456 transitions. [2022-01-18 13:29:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 13:29:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:56,139 INFO L225 Difference]: With dead ends: 15186 [2022-01-18 13:29:56,139 INFO L226 Difference]: Without dead ends: 14980 [2022-01-18 13:29:56,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3073 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 13:29:56,141 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 419 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:56,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 3625 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:29:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14980 states. [2022-01-18 13:29:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14980 to 12509. [2022-01-18 13:29:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12509 states, 12508 states have (on average 2.9550687559961624) internal successors, (36962), 12508 states have internal predecessors, (36962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12509 states to 12509 states and 36962 transitions. [2022-01-18 13:29:56,355 INFO L78 Accepts]: Start accepts. Automaton has 12509 states and 36962 transitions. Word has length 70 [2022-01-18 13:29:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:56,355 INFO L470 AbstractCegarLoop]: Abstraction has 12509 states and 36962 transitions. [2022-01-18 13:29:56,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 12509 states and 36962 transitions. [2022-01-18 13:29:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:29:56,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:56,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:56,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-01-18 13:29:56,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-01-18 13:29:56,587 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:56,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1883448011, now seen corresponding path program 139 times [2022-01-18 13:29:56,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:56,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81216843] [2022-01-18 13:29:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:56,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:56,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81216843] [2022-01-18 13:29:56,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81216843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:29:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779285342] [2022-01-18 13:29:56,718 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:29:56,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:29:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:29:56,719 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:29:56,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-18 13:29:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:56,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:29:56,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:29:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:57,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:29:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:57,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779285342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:29:57,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:29:57,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:29:57,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544453663] [2022-01-18 13:29:57,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:29:57,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:29:57,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:57,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:29:57,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:29:57,446 INFO L87 Difference]: Start difference. First operand 12509 states and 36962 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:59,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:59,821 INFO L93 Difference]: Finished difference Result 16083 states and 47002 transitions. [2022-01-18 13:29:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 13:29:59,821 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:29:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:59,851 INFO L225 Difference]: With dead ends: 16083 [2022-01-18 13:29:59,851 INFO L226 Difference]: Without dead ends: 15900 [2022-01-18 13:29:59,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3750 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1507, Invalid=10049, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 13:29:59,852 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 472 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:59,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 2673 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:29:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2022-01-18 13:30:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 12681. [2022-01-18 13:30:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12681 states, 12680 states have (on average 2.9535488958990537) internal successors, (37451), 12680 states have internal predecessors, (37451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 37451 transitions. [2022-01-18 13:30:00,088 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 37451 transitions. Word has length 70 [2022-01-18 13:30:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:00,088 INFO L470 AbstractCegarLoop]: Abstraction has 12681 states and 37451 transitions. [2022-01-18 13:30:00,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 37451 transitions. [2022-01-18 13:30:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:30:00,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:00,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:00,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2022-01-18 13:30:00,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-01-18 13:30:00,320 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:00,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:00,321 INFO L85 PathProgramCache]: Analyzing trace with hash 728183623, now seen corresponding path program 140 times [2022-01-18 13:30:00,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:00,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308809944] [2022-01-18 13:30:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:00,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:00,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308809944] [2022-01-18 13:30:00,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308809944] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362301110] [2022-01-18 13:30:00,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:30:00,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:00,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:00,412 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:00,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-18 13:30:00,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:30:00,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:00,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:30:00,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:00,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:01,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362301110] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:01,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:01,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:30:01,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936552656] [2022-01-18 13:30:01,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:01,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:30:01,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:30:01,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:30:01,010 INFO L87 Difference]: Start difference. First operand 12681 states and 37451 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:05,193 INFO L93 Difference]: Finished difference Result 17930 states and 52560 transitions. [2022-01-18 13:30:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 13:30:05,193 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:30:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:05,221 INFO L225 Difference]: With dead ends: 17930 [2022-01-18 13:30:05,221 INFO L226 Difference]: Without dead ends: 17844 [2022-01-18 13:30:05,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6380 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2695, Invalid=15395, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 13:30:05,222 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 617 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:05,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 2725 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:30:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2022-01-18 13:30:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 12541. [2022-01-18 13:30:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 12540 states have (on average 2.952950558213716) internal successors, (37030), 12540 states have internal predecessors, (37030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 37030 transitions. [2022-01-18 13:30:05,442 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 37030 transitions. Word has length 70 [2022-01-18 13:30:05,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:05,442 INFO L470 AbstractCegarLoop]: Abstraction has 12541 states and 37030 transitions. [2022-01-18 13:30:05,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:05,442 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 37030 transitions. [2022-01-18 13:30:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 13:30:05,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:05,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:05,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:05,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:05,663 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash 225332551, now seen corresponding path program 141 times [2022-01-18 13:30:05,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:05,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084985827] [2022-01-18 13:30:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:05,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:05,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:05,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084985827] [2022-01-18 13:30:05,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084985827] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:05,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201032986] [2022-01-18 13:30:05,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:30:05,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:05,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:05,767 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:05,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-18 13:30:05,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:30:05,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:05,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 13:30:05,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:06,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:06,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201032986] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:06,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:06,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-01-18 13:30:06,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766292162] [2022-01-18 13:30:06,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:06,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 13:30:06,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 13:30:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:30:06,464 INFO L87 Difference]: Start difference. First operand 12541 states and 37030 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:09,523 INFO L93 Difference]: Finished difference Result 16321 states and 47667 transitions. [2022-01-18 13:30:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 13:30:09,523 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 13:30:09,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:09,557 INFO L225 Difference]: With dead ends: 16321 [2022-01-18 13:30:09,557 INFO L226 Difference]: Without dead ends: 16138 [2022-01-18 13:30:09,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5234 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2371, Invalid=12881, Unknown=0, NotChecked=0, Total=15252 [2022-01-18 13:30:09,559 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 566 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:09,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 3181 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2022-01-18 13:30:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 12657. [2022-01-18 13:30:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12657 states, 12656 states have (on average 2.9520385587863465) internal successors, (37361), 12656 states have internal predecessors, (37361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12657 states to 12657 states and 37361 transitions. [2022-01-18 13:30:09,814 INFO L78 Accepts]: Start accepts. Automaton has 12657 states and 37361 transitions. Word has length 70 [2022-01-18 13:30:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:09,814 INFO L470 AbstractCegarLoop]: Abstraction has 12657 states and 37361 transitions. [2022-01-18 13:30:09,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 12657 states and 37361 transitions. [2022-01-18 13:30:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:09,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:09,832 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:09,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-01-18 13:30:10,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:10,048 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1700585577, now seen corresponding path program 142 times [2022-01-18 13:30:10,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:10,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841102297] [2022-01-18 13:30:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:10,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:10,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:10,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841102297] [2022-01-18 13:30:10,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841102297] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:10,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415408162] [2022-01-18 13:30:10,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:30:10,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:10,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:10,090 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:10,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-18 13:30:10,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:30:10,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:10,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:10,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:10,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:10,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415408162] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:10,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:10,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 13:30:10,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560082450] [2022-01-18 13:30:10,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:10,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:30:10,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:30:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:30:10,419 INFO L87 Difference]: Start difference. First operand 12657 states and 37361 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:10,669 INFO L93 Difference]: Finished difference Result 14135 states and 41295 transitions. [2022-01-18 13:30:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 13:30:10,670 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:10,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:10,694 INFO L225 Difference]: With dead ends: 14135 [2022-01-18 13:30:10,694 INFO L226 Difference]: Without dead ends: 14135 [2022-01-18 13:30:10,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:30:10,695 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 224 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:10,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1097 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:30:10,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2022-01-18 13:30:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 12801. [2022-01-18 13:30:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12801 states, 12800 states have (on average 2.951640625) internal successors, (37781), 12800 states have internal predecessors, (37781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12801 states to 12801 states and 37781 transitions. [2022-01-18 13:30:10,909 INFO L78 Accepts]: Start accepts. Automaton has 12801 states and 37781 transitions. Word has length 74 [2022-01-18 13:30:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:10,910 INFO L470 AbstractCegarLoop]: Abstraction has 12801 states and 37781 transitions. [2022-01-18 13:30:10,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 12801 states and 37781 transitions. [2022-01-18 13:30:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:10,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:10,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:10,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-01-18 13:30:11,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:11,132 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1759323673, now seen corresponding path program 143 times [2022-01-18 13:30:11,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:11,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560530674] [2022-01-18 13:30:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:11,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:11,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560530674] [2022-01-18 13:30:11,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560530674] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129516787] [2022-01-18 13:30:11,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:30:11,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:11,167 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:11,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-18 13:30:11,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:30:11,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:11,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:11,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:11,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:11,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129516787] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:11,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:11,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 13:30:11,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049944021] [2022-01-18 13:30:11,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:11,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:30:11,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:30:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:30:11,477 INFO L87 Difference]: Start difference. First operand 12801 states and 37781 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:11,966 INFO L93 Difference]: Finished difference Result 14181 states and 41374 transitions. [2022-01-18 13:30:11,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:30:11,966 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:11,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:11,988 INFO L225 Difference]: With dead ends: 14181 [2022-01-18 13:30:11,988 INFO L226 Difference]: Without dead ends: 14181 [2022-01-18 13:30:11,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:30:11,988 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 346 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:11,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1061 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:30:11,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14181 states. [2022-01-18 13:30:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14181 to 12857. [2022-01-18 13:30:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12857 states, 12856 states have (on average 2.9513845675171124) internal successors, (37943), 12856 states have internal predecessors, (37943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12857 states to 12857 states and 37943 transitions. [2022-01-18 13:30:12,174 INFO L78 Accepts]: Start accepts. Automaton has 12857 states and 37943 transitions. Word has length 74 [2022-01-18 13:30:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:12,174 INFO L470 AbstractCegarLoop]: Abstraction has 12857 states and 37943 transitions. [2022-01-18 13:30:12,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 12857 states and 37943 transitions. [2022-01-18 13:30:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:12,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:12,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:12,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-01-18 13:30:12,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:12,403 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1130358979, now seen corresponding path program 144 times [2022-01-18 13:30:12,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:12,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312002620] [2022-01-18 13:30:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:12,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:12,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312002620] [2022-01-18 13:30:12,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312002620] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654728922] [2022-01-18 13:30:12,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:30:12,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:12,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:12,454 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:12,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-18 13:30:12,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:30:12,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:12,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:12,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:12,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:12,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654728922] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:12,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:12,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-01-18 13:30:12,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555628301] [2022-01-18 13:30:12,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:12,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 13:30:12,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 13:30:12,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-18 13:30:12,812 INFO L87 Difference]: Start difference. First operand 12857 states and 37943 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:13,088 INFO L93 Difference]: Finished difference Result 14088 states and 41318 transitions. [2022-01-18 13:30:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:30:13,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:13,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:13,109 INFO L225 Difference]: With dead ends: 14088 [2022-01-18 13:30:13,109 INFO L226 Difference]: Without dead ends: 14088 [2022-01-18 13:30:13,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-01-18 13:30:13,110 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 263 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:13,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 961 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:30:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14088 states. [2022-01-18 13:30:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14088 to 12465. [2022-01-18 13:30:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12465 states, 12464 states have (on average 2.9574775353016687) internal successors, (36862), 12464 states have internal predecessors, (36862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12465 states to 12465 states and 36862 transitions. [2022-01-18 13:30:13,375 INFO L78 Accepts]: Start accepts. Automaton has 12465 states and 36862 transitions. Word has length 74 [2022-01-18 13:30:13,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:13,375 INFO L470 AbstractCegarLoop]: Abstraction has 12465 states and 36862 transitions. [2022-01-18 13:30:13,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 12465 states and 36862 transitions. [2022-01-18 13:30:13,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:13,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:13,393 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:13,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:13,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable176 [2022-01-18 13:30:13,599 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:13,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash -525314691, now seen corresponding path program 145 times [2022-01-18 13:30:13,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:13,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344983007] [2022-01-18 13:30:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:13,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:13,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:13,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344983007] [2022-01-18 13:30:13,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344983007] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:13,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23144940] [2022-01-18 13:30:13,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:30:13,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:13,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:13,637 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:13,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-18 13:30:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:13,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:13,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:13,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:13,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23144940] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:13,999 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:13,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 13:30:13,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101946419] [2022-01-18 13:30:13,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:13,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:30:13,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:30:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:30:13,999 INFO L87 Difference]: Start difference. First operand 12465 states and 36862 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:14,263 INFO L93 Difference]: Finished difference Result 13302 states and 38964 transitions. [2022-01-18 13:30:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 13:30:14,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:14,283 INFO L225 Difference]: With dead ends: 13302 [2022-01-18 13:30:14,284 INFO L226 Difference]: Without dead ends: 13266 [2022-01-18 13:30:14,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-01-18 13:30:14,284 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 234 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:14,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 787 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:30:14,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13266 states. [2022-01-18 13:30:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13266 to 12133. [2022-01-18 13:30:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12133 states, 12132 states have (on average 2.956890867128256) internal successors, (35873), 12132 states have internal predecessors, (35873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12133 states to 12133 states and 35873 transitions. [2022-01-18 13:30:14,461 INFO L78 Accepts]: Start accepts. Automaton has 12133 states and 35873 transitions. Word has length 74 [2022-01-18 13:30:14,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:14,462 INFO L470 AbstractCegarLoop]: Abstraction has 12133 states and 35873 transitions. [2022-01-18 13:30:14,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 12133 states and 35873 transitions. [2022-01-18 13:30:14,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:14,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:14,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:14,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:14,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:14,690 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1963115701, now seen corresponding path program 146 times [2022-01-18 13:30:14,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:14,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269711521] [2022-01-18 13:30:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:14,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:14,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:14,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269711521] [2022-01-18 13:30:14,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269711521] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:14,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251933059] [2022-01-18 13:30:14,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:30:14,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:14,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:14,729 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:14,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-18 13:30:14,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:30:14,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:14,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:14,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:14,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:15,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251933059] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:15,051 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:15,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 13:30:15,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169121826] [2022-01-18 13:30:15,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:15,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:30:15,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:30:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:30:15,052 INFO L87 Difference]: Start difference. First operand 12133 states and 35873 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:15,316 INFO L93 Difference]: Finished difference Result 13672 states and 39905 transitions. [2022-01-18 13:30:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 13:30:15,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:15,337 INFO L225 Difference]: With dead ends: 13672 [2022-01-18 13:30:15,337 INFO L226 Difference]: Without dead ends: 13672 [2022-01-18 13:30:15,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 13:30:15,337 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 325 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:15,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 909 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:30:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states. [2022-01-18 13:30:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13672 to 11773. [2022-01-18 13:30:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11773 states, 11772 states have (on average 2.953024125042474) internal successors, (34763), 11772 states have internal predecessors, (34763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 34763 transitions. [2022-01-18 13:30:15,505 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 34763 transitions. Word has length 74 [2022-01-18 13:30:15,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:15,505 INFO L470 AbstractCegarLoop]: Abstraction has 11773 states and 34763 transitions. [2022-01-18 13:30:15,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 34763 transitions. [2022-01-18 13:30:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:15,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:15,519 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:15,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-01-18 13:30:15,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-01-18 13:30:15,735 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash -433839251, now seen corresponding path program 147 times [2022-01-18 13:30:15,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:15,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764520509] [2022-01-18 13:30:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:15,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:15,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:15,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764520509] [2022-01-18 13:30:15,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764520509] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:15,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266539754] [2022-01-18 13:30:15,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:30:15,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:15,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:15,783 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:15,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-18 13:30:15,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:30:15,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:15,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:15,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:16,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:16,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266539754] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:16,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:16,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 13:30:16,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152901028] [2022-01-18 13:30:16,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:16,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:30:16,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:30:16,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:30:16,155 INFO L87 Difference]: Start difference. First operand 11773 states and 34763 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:16,513 INFO L93 Difference]: Finished difference Result 12670 states and 37013 transitions. [2022-01-18 13:30:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 13:30:16,514 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:16,534 INFO L225 Difference]: With dead ends: 12670 [2022-01-18 13:30:16,535 INFO L226 Difference]: Without dead ends: 12634 [2022-01-18 13:30:16,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 13:30:16,535 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 226 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:16,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 931 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:30:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2022-01-18 13:30:16,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 11469. [2022-01-18 13:30:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11469 states, 11468 states have (on average 2.9510812696198117) internal successors, (33843), 11468 states have internal predecessors, (33843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:16,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11469 states to 11469 states and 33843 transitions. [2022-01-18 13:30:16,701 INFO L78 Accepts]: Start accepts. Automaton has 11469 states and 33843 transitions. Word has length 74 [2022-01-18 13:30:16,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:16,701 INFO L470 AbstractCegarLoop]: Abstraction has 11469 states and 33843 transitions. [2022-01-18 13:30:16,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:16,701 INFO L276 IsEmpty]: Start isEmpty. Operand 11469 states and 33843 transitions. [2022-01-18 13:30:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:16,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:16,715 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:16,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:16,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-01-18 13:30:16,928 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:16,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2118918771, now seen corresponding path program 148 times [2022-01-18 13:30:16,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:16,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128821564] [2022-01-18 13:30:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:16,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:16,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:16,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128821564] [2022-01-18 13:30:16,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128821564] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:16,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456278483] [2022-01-18 13:30:16,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:30:16,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:16,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:16,969 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:16,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-18 13:30:17,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:30:17,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:17,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:17,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:17,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:17,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456278483] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:17,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:17,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 13:30:17,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206988804] [2022-01-18 13:30:17,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:17,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:30:17,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:17,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:30:17,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:30:17,315 INFO L87 Difference]: Start difference. First operand 11469 states and 33843 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:17,681 INFO L93 Difference]: Finished difference Result 12266 states and 35915 transitions. [2022-01-18 13:30:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 13:30:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:17,698 INFO L225 Difference]: With dead ends: 12266 [2022-01-18 13:30:17,698 INFO L226 Difference]: Without dead ends: 12230 [2022-01-18 13:30:17,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-01-18 13:30:17,698 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 222 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:17,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 912 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:30:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2022-01-18 13:30:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 11513. [2022-01-18 13:30:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11513 states, 11512 states have (on average 2.95135510771369) internal successors, (33976), 11512 states have internal predecessors, (33976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11513 states to 11513 states and 33976 transitions. [2022-01-18 13:30:17,850 INFO L78 Accepts]: Start accepts. Automaton has 11513 states and 33976 transitions. Word has length 74 [2022-01-18 13:30:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:17,850 INFO L470 AbstractCegarLoop]: Abstraction has 11513 states and 33976 transitions. [2022-01-18 13:30:17,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 11513 states and 33976 transitions. [2022-01-18 13:30:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:17,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:17,864 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:17,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:18,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:18,066 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1069541713, now seen corresponding path program 149 times [2022-01-18 13:30:18,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:18,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536231024] [2022-01-18 13:30:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:18,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:18,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:18,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536231024] [2022-01-18 13:30:18,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536231024] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:18,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353598736] [2022-01-18 13:30:18,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:30:18,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:18,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:18,101 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:18,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-01-18 13:30:18,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:30:18,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:18,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:18,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:18,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:18,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353598736] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:18,426 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:18,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 13:30:18,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019637977] [2022-01-18 13:30:18,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:18,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:30:18,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:30:18,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:30:18,427 INFO L87 Difference]: Start difference. First operand 11513 states and 33976 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:18,874 INFO L93 Difference]: Finished difference Result 12402 states and 36248 transitions. [2022-01-18 13:30:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:30:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:18,893 INFO L225 Difference]: With dead ends: 12402 [2022-01-18 13:30:18,893 INFO L226 Difference]: Without dead ends: 12366 [2022-01-18 13:30:18,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:30:18,893 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 241 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:18,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 1018 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:30:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12366 states. [2022-01-18 13:30:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12366 to 11481. [2022-01-18 13:30:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11481 states, 11480 states have (on average 2.9505226480836235) internal successors, (33872), 11480 states have internal predecessors, (33872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 33872 transitions. [2022-01-18 13:30:19,052 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 33872 transitions. Word has length 74 [2022-01-18 13:30:19,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:19,052 INFO L470 AbstractCegarLoop]: Abstraction has 11481 states and 33872 transitions. [2022-01-18 13:30:19,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 33872 transitions. [2022-01-18 13:30:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:19,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:19,066 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:19,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-01-18 13:30:19,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2022-01-18 13:30:19,282 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:19,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash -374564563, now seen corresponding path program 150 times [2022-01-18 13:30:19,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:19,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280109492] [2022-01-18 13:30:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:19,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:19,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:19,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280109492] [2022-01-18 13:30:19,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280109492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:19,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182499891] [2022-01-18 13:30:19,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:30:19,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:19,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:19,307 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:19,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-01-18 13:30:19,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:30:19,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:19,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:19,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:19,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:19,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182499891] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:19,609 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:19,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-01-18 13:30:19,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245349753] [2022-01-18 13:30:19,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:19,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 13:30:19,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:19,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 13:30:19,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-18 13:30:19,610 INFO L87 Difference]: Start difference. First operand 11481 states and 33872 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:19,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:19,882 INFO L93 Difference]: Finished difference Result 12346 states and 36137 transitions. [2022-01-18 13:30:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:30:19,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:19,900 INFO L225 Difference]: With dead ends: 12346 [2022-01-18 13:30:19,901 INFO L226 Difference]: Without dead ends: 12298 [2022-01-18 13:30:19,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-01-18 13:30:19,901 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 296 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:19,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 825 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:30:19,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12298 states. [2022-01-18 13:30:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12298 to 10885. [2022-01-18 13:30:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10885 states, 10884 states have (on average 2.9546122748989343) internal successors, (32158), 10884 states have internal predecessors, (32158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10885 states to 10885 states and 32158 transitions. [2022-01-18 13:30:20,053 INFO L78 Accepts]: Start accepts. Automaton has 10885 states and 32158 transitions. Word has length 74 [2022-01-18 13:30:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:20,053 INFO L470 AbstractCegarLoop]: Abstraction has 10885 states and 32158 transitions. [2022-01-18 13:30:20,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10885 states and 32158 transitions. [2022-01-18 13:30:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 13:30:20,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:20,066 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:20,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:20,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:20,281 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1326088179, now seen corresponding path program 151 times [2022-01-18 13:30:20,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:20,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579891178] [2022-01-18 13:30:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:20,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:20,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:20,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579891178] [2022-01-18 13:30:20,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579891178] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:20,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569777694] [2022-01-18 13:30:20,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:30:20,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:20,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:20,306 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:20,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-01-18 13:30:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:20,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:30:20,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:20,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:20,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569777694] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:20,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:20,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 13:30:20,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608798551] [2022-01-18 13:30:20,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:20,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:30:20,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:30:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:30:20,548 INFO L87 Difference]: Start difference. First operand 10885 states and 32158 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:20,796 INFO L93 Difference]: Finished difference Result 12036 states and 35091 transitions. [2022-01-18 13:30:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 13:30:20,796 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 13:30:20,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:20,813 INFO L225 Difference]: With dead ends: 12036 [2022-01-18 13:30:20,813 INFO L226 Difference]: Without dead ends: 12036 [2022-01-18 13:30:20,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-01-18 13:30:20,814 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 242 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:20,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1042 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:30:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2022-01-18 13:30:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 10669. [2022-01-18 13:30:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 2.9501312335958003) internal successors, (31472), 10668 states have internal predecessors, (31472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 31472 transitions. [2022-01-18 13:30:20,962 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 31472 transitions. Word has length 74 [2022-01-18 13:30:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:20,962 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 31472 transitions. [2022-01-18 13:30:20,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 31472 transitions. [2022-01-18 13:30:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:20,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:20,975 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:20,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:21,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-01-18 13:30:21,179 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:21,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1482324071, now seen corresponding path program 152 times [2022-01-18 13:30:21,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:21,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98947568] [2022-01-18 13:30:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:21,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:21,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:21,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98947568] [2022-01-18 13:30:21,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98947568] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:21,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823166553] [2022-01-18 13:30:21,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:30:21,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:21,313 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:21,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-01-18 13:30:21,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:30:21,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:21,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:30:21,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:21,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:22,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823166553] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:22,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:22,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:30:22,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285232812] [2022-01-18 13:30:22,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:22,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:30:22,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:22,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:30:22,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:30:22,279 INFO L87 Difference]: Start difference. First operand 10669 states and 31472 transitions. Second operand has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:23,984 INFO L93 Difference]: Finished difference Result 12099 states and 35409 transitions. [2022-01-18 13:30:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 13:30:23,984 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:24,003 INFO L225 Difference]: With dead ends: 12099 [2022-01-18 13:30:24,003 INFO L226 Difference]: Without dead ends: 11964 [2022-01-18 13:30:24,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1221, Invalid=7151, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 13:30:24,004 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 496 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:24,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 3199 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11964 states. [2022-01-18 13:30:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11964 to 10721. [2022-01-18 13:30:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10721 states, 10720 states have (on average 2.9484141791044776) internal successors, (31607), 10720 states have internal predecessors, (31607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10721 states to 10721 states and 31607 transitions. [2022-01-18 13:30:24,153 INFO L78 Accepts]: Start accepts. Automaton has 10721 states and 31607 transitions. Word has length 78 [2022-01-18 13:30:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:24,154 INFO L470 AbstractCegarLoop]: Abstraction has 10721 states and 31607 transitions. [2022-01-18 13:30:24,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 10721 states and 31607 transitions. [2022-01-18 13:30:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:24,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:24,166 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:24,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:24,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:24,373 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:24,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2093402461, now seen corresponding path program 153 times [2022-01-18 13:30:24,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:24,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001424316] [2022-01-18 13:30:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:24,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:24,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:24,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001424316] [2022-01-18 13:30:24,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001424316] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:24,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314302284] [2022-01-18 13:30:24,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:30:24,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:24,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:24,547 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:24,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-01-18 13:30:24,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 13:30:24,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:24,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:30:24,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:30:24,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:30:25,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314302284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:25,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:25,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:30:25,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37283461] [2022-01-18 13:30:25,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:25,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:30:25,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:30:25,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:30:25,368 INFO L87 Difference]: Start difference. First operand 10721 states and 31607 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:27,451 INFO L93 Difference]: Finished difference Result 11808 states and 34568 transitions. [2022-01-18 13:30:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 13:30:27,452 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:27,469 INFO L225 Difference]: With dead ends: 11808 [2022-01-18 13:30:27,469 INFO L226 Difference]: Without dead ends: 11569 [2022-01-18 13:30:27,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4614 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1862, Invalid=13144, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 13:30:27,471 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 567 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 4145 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:27,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 4145 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2022-01-18 13:30:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 10285. [2022-01-18 13:30:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10285 states, 10284 states have (on average 2.899649941656943) internal successors, (29820), 10284 states have internal predecessors, (29820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10285 states to 10285 states and 29820 transitions. [2022-01-18 13:30:27,680 INFO L78 Accepts]: Start accepts. Automaton has 10285 states and 29820 transitions. Word has length 78 [2022-01-18 13:30:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:27,680 INFO L470 AbstractCegarLoop]: Abstraction has 10285 states and 29820 transitions. [2022-01-18 13:30:27,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 10285 states and 29820 transitions. [2022-01-18 13:30:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:27,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:27,692 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:27,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:27,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:27,908 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:27,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:27,908 INFO L85 PathProgramCache]: Analyzing trace with hash -926819967, now seen corresponding path program 154 times [2022-01-18 13:30:27,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:27,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763240781] [2022-01-18 13:30:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:27,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:28,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:28,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763240781] [2022-01-18 13:30:28,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763240781] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:28,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877428768] [2022-01-18 13:30:28,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:30:28,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:28,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:28,023 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:28,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-01-18 13:30:28,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:30:28,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:28,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 13:30:28,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:28,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:29,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877428768] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:29,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:29,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-01-18 13:30:29,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885838777] [2022-01-18 13:30:29,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:29,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 13:30:29,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:29,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 13:30:29,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:30:29,134 INFO L87 Difference]: Start difference. First operand 10285 states and 29820 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:31,324 INFO L93 Difference]: Finished difference Result 12424 states and 35711 transitions. [2022-01-18 13:30:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 13:30:31,325 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:31,346 INFO L225 Difference]: With dead ends: 12424 [2022-01-18 13:30:31,346 INFO L226 Difference]: Without dead ends: 12322 [2022-01-18 13:30:31,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1765, Invalid=11807, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 13:30:31,348 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 884 mSDsluCounter, 3672 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:31,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 3718 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:30:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2022-01-18 13:30:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 10357. [2022-01-18 13:30:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10357 states, 10356 states have (on average 2.898609501738123) internal successors, (30018), 10356 states have internal predecessors, (30018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 30018 transitions. [2022-01-18 13:30:31,500 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 30018 transitions. Word has length 78 [2022-01-18 13:30:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:31,500 INFO L470 AbstractCegarLoop]: Abstraction has 10357 states and 30018 transitions. [2022-01-18 13:30:31,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 30018 transitions. [2022-01-18 13:30:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:31,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:31,512 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:31,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:31,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:31,727 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1986671687, now seen corresponding path program 155 times [2022-01-18 13:30:31,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:31,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914647836] [2022-01-18 13:30:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:31,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:31,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:31,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914647836] [2022-01-18 13:30:31,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914647836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:31,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739597310] [2022-01-18 13:30:31,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:30:31,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:31,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:31,899 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:31,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-01-18 13:30:32,034 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:30:32,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:32,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:30:32,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:30:32,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:30:32,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739597310] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:32,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:32,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:30:32,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311014511] [2022-01-18 13:30:32,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:32,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:30:32,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:32,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:30:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:30:32,727 INFO L87 Difference]: Start difference. First operand 10357 states and 30018 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:34,889 INFO L93 Difference]: Finished difference Result 11180 states and 32193 transitions. [2022-01-18 13:30:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 13:30:34,889 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:34,905 INFO L225 Difference]: With dead ends: 11180 [2022-01-18 13:30:34,905 INFO L226 Difference]: Without dead ends: 11077 [2022-01-18 13:30:34,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4372 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2057, Invalid=11985, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 13:30:34,906 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 769 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:34,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 3386 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2022-01-18 13:30:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 9941. [2022-01-18 13:30:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9941 states, 9940 states have (on average 2.8867203219315893) internal successors, (28694), 9940 states have internal predecessors, (28694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 28694 transitions. [2022-01-18 13:30:35,059 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 28694 transitions. Word has length 78 [2022-01-18 13:30:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:35,059 INFO L470 AbstractCegarLoop]: Abstraction has 9941 states and 28694 transitions. [2022-01-18 13:30:35,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 28694 transitions. [2022-01-18 13:30:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:35,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:35,071 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:35,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:35,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:35,287 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2025068431, now seen corresponding path program 156 times [2022-01-18 13:30:35,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:35,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236095877] [2022-01-18 13:30:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:35,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:35,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:35,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236095877] [2022-01-18 13:30:35,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236095877] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:35,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903899378] [2022-01-18 13:30:35,420 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:30:35,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:35,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:35,421 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:35,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-01-18 13:30:35,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:30:35,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:35,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:30:35,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:35,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:36,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903899378] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:36,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:36,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:30:36,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299538525] [2022-01-18 13:30:36,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:36,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:30:36,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:30:36,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:30:36,268 INFO L87 Difference]: Start difference. First operand 9941 states and 28694 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:38,106 INFO L93 Difference]: Finished difference Result 12896 states and 36946 transitions. [2022-01-18 13:30:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 13:30:38,106 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:38,126 INFO L225 Difference]: With dead ends: 12896 [2022-01-18 13:30:38,126 INFO L226 Difference]: Without dead ends: 12810 [2022-01-18 13:30:38,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3448 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1600, Invalid=9956, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 13:30:38,130 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 669 mSDsluCounter, 3747 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 3805 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:38,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 3805 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2022-01-18 13:30:38,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 10041. [2022-01-18 13:30:38,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10041 states, 10040 states have (on average 2.885358565737052) internal successors, (28969), 10040 states have internal predecessors, (28969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10041 states to 10041 states and 28969 transitions. [2022-01-18 13:30:38,302 INFO L78 Accepts]: Start accepts. Automaton has 10041 states and 28969 transitions. Word has length 78 [2022-01-18 13:30:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:38,302 INFO L470 AbstractCegarLoop]: Abstraction has 10041 states and 28969 transitions. [2022-01-18 13:30:38,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10041 states and 28969 transitions. [2022-01-18 13:30:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:38,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:38,315 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:38,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:38,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-01-18 13:30:38,519 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:38,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1304210485, now seen corresponding path program 157 times [2022-01-18 13:30:38,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:38,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965397163] [2022-01-18 13:30:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:38,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:38,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:38,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965397163] [2022-01-18 13:30:38,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965397163] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:38,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394798054] [2022-01-18 13:30:38,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:30:38,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:38,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:38,687 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:38,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-01-18 13:30:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:38,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:30:38,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:39,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:39,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394798054] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:39,740 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:39,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:30:39,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107231717] [2022-01-18 13:30:39,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:39,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:30:39,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:39,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:30:39,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1519, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:30:39,741 INFO L87 Difference]: Start difference. First operand 10041 states and 28969 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:41,783 INFO L93 Difference]: Finished difference Result 13244 states and 38083 transitions. [2022-01-18 13:30:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 13:30:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:41,803 INFO L225 Difference]: With dead ends: 13244 [2022-01-18 13:30:41,804 INFO L226 Difference]: Without dead ends: 13158 [2022-01-18 13:30:41,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3981 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1819, Invalid=10837, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 13:30:41,805 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 681 mSDsluCounter, 3774 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:41,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 3860 Invalid, 2315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13158 states. [2022-01-18 13:30:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13158 to 9961. [2022-01-18 13:30:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9961 states, 9960 states have (on average 2.88644578313253) internal successors, (28749), 9960 states have internal predecessors, (28749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 28749 transitions. [2022-01-18 13:30:41,954 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 28749 transitions. Word has length 78 [2022-01-18 13:30:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:41,954 INFO L470 AbstractCegarLoop]: Abstraction has 9961 states and 28749 transitions. [2022-01-18 13:30:41,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 28749 transitions. [2022-01-18 13:30:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:41,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:41,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:41,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:42,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-01-18 13:30:42,177 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash 460003775, now seen corresponding path program 158 times [2022-01-18 13:30:42,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:42,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853593468] [2022-01-18 13:30:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:42,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:42,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:42,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853593468] [2022-01-18 13:30:42,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853593468] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:42,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410769005] [2022-01-18 13:30:42,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:30:42,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:42,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:42,361 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:42,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-01-18 13:30:42,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:30:42,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:42,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:30:42,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:42,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:43,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410769005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:43,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:43,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:30:43,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034900034] [2022-01-18 13:30:43,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:43,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:30:43,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:43,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:30:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:30:43,446 INFO L87 Difference]: Start difference. First operand 9961 states and 28749 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:44,894 INFO L93 Difference]: Finished difference Result 11948 states and 34086 transitions. [2022-01-18 13:30:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 13:30:44,894 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:44,914 INFO L225 Difference]: With dead ends: 11948 [2022-01-18 13:30:44,915 INFO L226 Difference]: Without dead ends: 11862 [2022-01-18 13:30:44,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2365 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1115, Invalid=7257, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 13:30:44,916 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 510 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:44,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 3516 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2022-01-18 13:30:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 10057. [2022-01-18 13:30:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 10056 states have (on average 2.885938743038982) internal successors, (29021), 10056 states have internal predecessors, (29021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 29021 transitions. [2022-01-18 13:30:45,090 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 29021 transitions. Word has length 78 [2022-01-18 13:30:45,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:45,090 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 29021 transitions. [2022-01-18 13:30:45,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 29021 transitions. [2022-01-18 13:30:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:45,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:45,102 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:45,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2022-01-18 13:30:45,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:45,318 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:45,320 INFO L85 PathProgramCache]: Analyzing trace with hash -638244689, now seen corresponding path program 159 times [2022-01-18 13:30:45,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:45,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997744422] [2022-01-18 13:30:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:45,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:45,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:45,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997744422] [2022-01-18 13:30:45,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997744422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:45,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509484362] [2022-01-18 13:30:45,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:30:45,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:45,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:45,536 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:45,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-01-18 13:30:45,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:30:45,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:45,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:30:45,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:30:45,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:30:46,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509484362] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:46,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:46,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:30:46,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232715998] [2022-01-18 13:30:46,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:46,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:30:46,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:46,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:30:46,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:30:46,202 INFO L87 Difference]: Start difference. First operand 10057 states and 29021 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:48,282 INFO L93 Difference]: Finished difference Result 10939 states and 31356 transitions. [2022-01-18 13:30:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 13:30:48,282 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:48,297 INFO L225 Difference]: With dead ends: 10939 [2022-01-18 13:30:48,298 INFO L226 Difference]: Without dead ends: 10853 [2022-01-18 13:30:48,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4774 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2099, Invalid=13153, Unknown=0, NotChecked=0, Total=15252 [2022-01-18 13:30:48,300 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 563 mSDsluCounter, 3892 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:48,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 3991 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:30:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2022-01-18 13:30:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 9813. [2022-01-18 13:30:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9813 states, 9812 states have (on average 2.881165919282511) internal successors, (28270), 9812 states have internal predecessors, (28270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9813 states to 9813 states and 28270 transitions. [2022-01-18 13:30:48,436 INFO L78 Accepts]: Start accepts. Automaton has 9813 states and 28270 transitions. Word has length 78 [2022-01-18 13:30:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:48,436 INFO L470 AbstractCegarLoop]: Abstraction has 9813 states and 28270 transitions. [2022-01-18 13:30:48,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9813 states and 28270 transitions. [2022-01-18 13:30:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:48,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:48,447 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:48,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-01-18 13:30:48,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:48,663 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:48,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:48,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1603933069, now seen corresponding path program 160 times [2022-01-18 13:30:48,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:48,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42590557] [2022-01-18 13:30:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:48,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:48,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:48,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42590557] [2022-01-18 13:30:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42590557] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:48,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534175721] [2022-01-18 13:30:48,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:30:48,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:48,838 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:48,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-01-18 13:30:48,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:30:48,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:48,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 13:30:48,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:49,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:49,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534175721] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:49,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:49,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-01-18 13:30:49,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683630464] [2022-01-18 13:30:49,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:49,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 13:30:49,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:49,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 13:30:49,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:30:49,765 INFO L87 Difference]: Start difference. First operand 9813 states and 28270 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:52,532 INFO L93 Difference]: Finished difference Result 12362 states and 35437 transitions. [2022-01-18 13:30:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 13:30:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:52,549 INFO L225 Difference]: With dead ends: 12362 [2022-01-18 13:30:52,549 INFO L226 Difference]: Without dead ends: 12276 [2022-01-18 13:30:52,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7188 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2692, Invalid=19360, Unknown=0, NotChecked=0, Total=22052 [2022-01-18 13:30:52,551 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1209 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:52,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 3747 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:52,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2022-01-18 13:30:52,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 10205. [2022-01-18 13:30:52,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10205 states, 10204 states have (on average 2.8808310466483733) internal successors, (29396), 10204 states have internal predecessors, (29396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 29396 transitions. [2022-01-18 13:30:52,696 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 29396 transitions. Word has length 78 [2022-01-18 13:30:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:52,696 INFO L470 AbstractCegarLoop]: Abstraction has 10205 states and 29396 transitions. [2022-01-18 13:30:52,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 29396 transitions. [2022-01-18 13:30:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:52,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:52,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:52,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-01-18 13:30:52,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:52,923 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1563789765, now seen corresponding path program 161 times [2022-01-18 13:30:52,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:52,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779669407] [2022-01-18 13:30:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:52,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:53,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:53,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779669407] [2022-01-18 13:30:53,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779669407] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:53,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85990416] [2022-01-18 13:30:53,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:30:53,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:53,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:53,094 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:53,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-01-18 13:30:53,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 13:30:53,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:53,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:30:53,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:30:53,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:30:53,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85990416] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:53,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:53,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:30:53,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023571881] [2022-01-18 13:30:53,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:53,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:30:53,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:30:53,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:30:53,808 INFO L87 Difference]: Start difference. First operand 10205 states and 29396 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:55,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:55,752 INFO L93 Difference]: Finished difference Result 11576 states and 33122 transitions. [2022-01-18 13:30:55,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 13:30:55,752 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:55,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:55,769 INFO L225 Difference]: With dead ends: 11576 [2022-01-18 13:30:55,769 INFO L226 Difference]: Without dead ends: 11469 [2022-01-18 13:30:55,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3105 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1345, Invalid=9367, Unknown=0, NotChecked=0, Total=10712 [2022-01-18 13:30:55,770 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 426 mSDsluCounter, 3907 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:55,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 3991 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11469 states. [2022-01-18 13:30:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11469 to 10457. [2022-01-18 13:30:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10457 states, 10456 states have (on average 2.861610558530987) internal successors, (29921), 10456 states have internal predecessors, (29921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10457 states to 10457 states and 29921 transitions. [2022-01-18 13:30:55,918 INFO L78 Accepts]: Start accepts. Automaton has 10457 states and 29921 transitions. Word has length 78 [2022-01-18 13:30:55,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:55,918 INFO L470 AbstractCegarLoop]: Abstraction has 10457 states and 29921 transitions. [2022-01-18 13:30:55,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10457 states and 29921 transitions. [2022-01-18 13:30:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:55,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:55,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:55,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:56,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:56,135 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:56,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:56,135 INFO L85 PathProgramCache]: Analyzing trace with hash 948913081, now seen corresponding path program 162 times [2022-01-18 13:30:56,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:56,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836387833] [2022-01-18 13:30:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:56,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:56,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836387833] [2022-01-18 13:30:56,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836387833] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:56,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562794493] [2022-01-18 13:30:56,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:30:56,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:56,269 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:56,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-01-18 13:30:56,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:30:56,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:30:56,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:30:56,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:56,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:30:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:57,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562794493] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:30:57,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:30:57,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:30:57,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081535446] [2022-01-18 13:30:57,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:30:57,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:30:57,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:57,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:30:57,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:30:57,158 INFO L87 Difference]: Start difference. First operand 10457 states and 29921 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:58,484 INFO L93 Difference]: Finished difference Result 12144 states and 34460 transitions. [2022-01-18 13:30:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 13:30:58,484 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:30:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:58,502 INFO L225 Difference]: With dead ends: 12144 [2022-01-18 13:30:58,502 INFO L226 Difference]: Without dead ends: 12078 [2022-01-18 13:30:58,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=995, Invalid=7377, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 13:30:58,505 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 442 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 4130 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:58,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 4130 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-01-18 13:30:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 10461. [2022-01-18 13:30:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 10460 states have (on average 2.861567877629063) internal successors, (29932), 10460 states have internal predecessors, (29932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 29932 transitions. [2022-01-18 13:30:58,656 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 29932 transitions. Word has length 78 [2022-01-18 13:30:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:58,656 INFO L470 AbstractCegarLoop]: Abstraction has 10461 states and 29932 transitions. [2022-01-18 13:30:58,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 29932 transitions. [2022-01-18 13:30:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:30:58,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:58,668 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:58,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-01-18 13:30:58,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2022-01-18 13:30:58,874 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash -206351307, now seen corresponding path program 163 times [2022-01-18 13:30:58,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:58,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126833863] [2022-01-18 13:30:58,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:58,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:59,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:59,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126833863] [2022-01-18 13:30:59,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126833863] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:30:59,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157926643] [2022-01-18 13:30:59,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:30:59,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:30:59,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:30:59,068 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:30:59,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-01-18 13:30:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:59,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:30:59,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:30:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:59,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:00,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157926643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:00,128 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:00,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:31:00,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924956614] [2022-01-18 13:31:00,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:00,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:31:00,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:31:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:31:00,129 INFO L87 Difference]: Start difference. First operand 10461 states and 29932 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:02,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:02,528 INFO L93 Difference]: Finished difference Result 13518 states and 38297 transitions. [2022-01-18 13:31:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 13:31:02,528 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:02,616 INFO L225 Difference]: With dead ends: 13518 [2022-01-18 13:31:02,616 INFO L226 Difference]: Without dead ends: 13440 [2022-01-18 13:31:02,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3711 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1553, Invalid=10657, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 13:31:02,617 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 586 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:02,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 3910 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2022-01-18 13:31:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 10609. [2022-01-18 13:31:02,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10609 states, 10608 states have (on average 2.8611425339366514) internal successors, (30351), 10608 states have internal predecessors, (30351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10609 states to 10609 states and 30351 transitions. [2022-01-18 13:31:02,773 INFO L78 Accepts]: Start accepts. Automaton has 10609 states and 30351 transitions. Word has length 78 [2022-01-18 13:31:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:02,774 INFO L470 AbstractCegarLoop]: Abstraction has 10609 states and 30351 transitions. [2022-01-18 13:31:02,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10609 states and 30351 transitions. [2022-01-18 13:31:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:02,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:02,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:02,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2022-01-18 13:31:03,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:03,002 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:03,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1628909515, now seen corresponding path program 164 times [2022-01-18 13:31:03,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:03,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684505102] [2022-01-18 13:31:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:03,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:03,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:03,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684505102] [2022-01-18 13:31:03,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684505102] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713892560] [2022-01-18 13:31:03,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:31:03,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:03,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:03,126 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:03,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-01-18 13:31:03,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:31:03,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:03,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:31:03,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:03,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:04,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713892560] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:04,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:04,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:31:04,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701782111] [2022-01-18 13:31:04,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:04,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:31:04,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:31:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:31:04,351 INFO L87 Difference]: Start difference. First operand 10609 states and 30351 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:06,995 INFO L93 Difference]: Finished difference Result 12814 states and 36301 transitions. [2022-01-18 13:31:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 13:31:06,995 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:07,016 INFO L225 Difference]: With dead ends: 12814 [2022-01-18 13:31:07,016 INFO L226 Difference]: Without dead ends: 12748 [2022-01-18 13:31:07,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4148 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1593, Invalid=12213, Unknown=0, NotChecked=0, Total=13806 [2022-01-18 13:31:07,018 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 550 mSDsluCounter, 5382 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:07,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 5360 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:31:07,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12748 states. [2022-01-18 13:31:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12748 to 10709. [2022-01-18 13:31:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10709 states, 10708 states have (on average 2.860104594695555) internal successors, (30626), 10708 states have internal predecessors, (30626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10709 states to 10709 states and 30626 transitions. [2022-01-18 13:31:07,185 INFO L78 Accepts]: Start accepts. Automaton has 10709 states and 30626 transitions. Word has length 78 [2022-01-18 13:31:07,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:07,185 INFO L470 AbstractCegarLoop]: Abstraction has 10709 states and 30626 transitions. [2022-01-18 13:31:07,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 10709 states and 30626 transitions. [2022-01-18 13:31:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:07,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:07,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:07,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:07,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:07,399 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1510793393, now seen corresponding path program 165 times [2022-01-18 13:31:07,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:07,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002242489] [2022-01-18 13:31:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:07,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:07,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:07,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002242489] [2022-01-18 13:31:07,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002242489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:07,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288519841] [2022-01-18 13:31:07,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:31:07,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:07,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:07,592 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-01-18 13:31:07,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:31:07,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:07,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:31:07,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:31:08,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:31:08,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288519841] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:08,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:08,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:31:08,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079602623] [2022-01-18 13:31:08,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:08,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:31:08,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:31:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:31:08,457 INFO L87 Difference]: Start difference. First operand 10709 states and 30626 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:10,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:10,934 INFO L93 Difference]: Finished difference Result 14463 states and 41355 transitions. [2022-01-18 13:31:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 13:31:10,934 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:10,956 INFO L225 Difference]: With dead ends: 14463 [2022-01-18 13:31:10,956 INFO L226 Difference]: Without dead ends: 14385 [2022-01-18 13:31:10,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4950 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1977, Invalid=13773, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 13:31:10,958 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 633 mSDsluCounter, 3740 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:10,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 3848 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2022-01-18 13:31:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 11217. [2022-01-18 13:31:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11217 states, 11216 states have (on average 2.8690263908701854) internal successors, (32179), 11216 states have internal predecessors, (32179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11217 states to 11217 states and 32179 transitions. [2022-01-18 13:31:11,134 INFO L78 Accepts]: Start accepts. Automaton has 11217 states and 32179 transitions. Word has length 78 [2022-01-18 13:31:11,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:11,134 INFO L470 AbstractCegarLoop]: Abstraction has 11217 states and 32179 transitions. [2022-01-18 13:31:11,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 11217 states and 32179 transitions. [2022-01-18 13:31:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:11,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:11,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:11,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:11,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:11,362 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:11,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1726214867, now seen corresponding path program 166 times [2022-01-18 13:31:11,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:11,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831173308] [2022-01-18 13:31:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:11,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:11,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:11,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831173308] [2022-01-18 13:31:11,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831173308] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:11,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978125192] [2022-01-18 13:31:11,471 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:31:11,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:11,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:11,472 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:11,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-01-18 13:31:11,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:31:11,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:11,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 13:31:11,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:11,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:12,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978125192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:12,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:12,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 40 [2022-01-18 13:31:12,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753460590] [2022-01-18 13:31:12,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:12,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 13:31:12,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:12,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 13:31:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 13:31:12,341 INFO L87 Difference]: Start difference. First operand 11217 states and 32179 transitions. Second operand has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:15,862 INFO L93 Difference]: Finished difference Result 15620 states and 44125 transitions. [2022-01-18 13:31:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-18 13:31:15,862 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:15,887 INFO L225 Difference]: With dead ends: 15620 [2022-01-18 13:31:15,887 INFO L226 Difference]: Without dead ends: 15395 [2022-01-18 13:31:15,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9696 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3125, Invalid=23935, Unknown=0, NotChecked=0, Total=27060 [2022-01-18 13:31:15,889 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 955 mSDsluCounter, 5180 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:15,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 5144 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:31:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15395 states. [2022-01-18 13:31:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15395 to 11897. [2022-01-18 13:31:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11897 states, 11896 states have (on average 2.8639038332212507) internal successors, (34069), 11896 states have internal predecessors, (34069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11897 states to 11897 states and 34069 transitions. [2022-01-18 13:31:16,105 INFO L78 Accepts]: Start accepts. Automaton has 11897 states and 34069 transitions. Word has length 78 [2022-01-18 13:31:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:16,105 INFO L470 AbstractCegarLoop]: Abstraction has 11897 states and 34069 transitions. [2022-01-18 13:31:16,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 11897 states and 34069 transitions. [2022-01-18 13:31:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:16,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:16,120 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:16,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2022-01-18 13:31:16,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:16,326 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:16,326 INFO L85 PathProgramCache]: Analyzing trace with hash 143966545, now seen corresponding path program 167 times [2022-01-18 13:31:16,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:16,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990336441] [2022-01-18 13:31:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:16,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:16,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:16,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990336441] [2022-01-18 13:31:16,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990336441] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:16,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900523488] [2022-01-18 13:31:16,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:31:16,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:16,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:16,494 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:16,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-01-18 13:31:16,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:31:16,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:16,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:31:16,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:17,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:17,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900523488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:17,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:17,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:31:17,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933529531] [2022-01-18 13:31:17,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:17,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:31:17,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:17,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:31:17,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:31:17,725 INFO L87 Difference]: Start difference. First operand 11897 states and 34069 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:19,795 INFO L93 Difference]: Finished difference Result 13940 states and 39519 transitions. [2022-01-18 13:31:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 13:31:19,795 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:19,820 INFO L225 Difference]: With dead ends: 13940 [2022-01-18 13:31:19,820 INFO L226 Difference]: Without dead ends: 13859 [2022-01-18 13:31:19,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1745, Invalid=13507, Unknown=0, NotChecked=0, Total=15252 [2022-01-18 13:31:19,822 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 796 mSDsluCounter, 4013 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:19,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 4044 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:31:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13859 states. [2022-01-18 13:31:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13859 to 12025. [2022-01-18 13:31:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12025 states, 12024 states have (on average 2.8660179640718564) internal successors, (34461), 12024 states have internal predecessors, (34461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 34461 transitions. [2022-01-18 13:31:20,080 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 34461 transitions. Word has length 78 [2022-01-18 13:31:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:20,080 INFO L470 AbstractCegarLoop]: Abstraction has 12025 states and 34461 transitions. [2022-01-18 13:31:20,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 34461 transitions. [2022-01-18 13:31:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:20,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:20,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:20,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:20,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-01-18 13:31:20,309 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1172360911, now seen corresponding path program 168 times [2022-01-18 13:31:20,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:20,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070754812] [2022-01-18 13:31:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:20,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:20,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:20,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070754812] [2022-01-18 13:31:20,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070754812] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:20,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266172287] [2022-01-18 13:31:20,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:31:20,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:20,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:20,452 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:20,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-01-18 13:31:20,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:31:20,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:20,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:31:20,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:31:20,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:31:21,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266172287] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:21,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:21,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:31:21,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356335342] [2022-01-18 13:31:21,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:21,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:31:21,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:21,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:31:21,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:31:21,172 INFO L87 Difference]: Start difference. First operand 12025 states and 34461 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:23,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:23,407 INFO L93 Difference]: Finished difference Result 16073 states and 45915 transitions. [2022-01-18 13:31:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 13:31:23,407 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:23,434 INFO L225 Difference]: With dead ends: 16073 [2022-01-18 13:31:23,435 INFO L226 Difference]: Without dead ends: 15949 [2022-01-18 13:31:23,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3534, Invalid=21588, Unknown=0, NotChecked=0, Total=25122 [2022-01-18 13:31:23,438 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 950 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:23,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 3815 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:31:23,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15949 states. [2022-01-18 13:31:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15949 to 5553. [2022-01-18 13:31:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5552 states have (on average 2.8405979827089336) internal successors, (15771), 5552 states have internal predecessors, (15771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 15771 transitions. [2022-01-18 13:31:23,584 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 15771 transitions. Word has length 78 [2022-01-18 13:31:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:23,584 INFO L470 AbstractCegarLoop]: Abstraction has 5553 states and 15771 transitions. [2022-01-18 13:31:23,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:23,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 15771 transitions. [2022-01-18 13:31:23,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:23,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:23,590 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:23,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:23,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:23,803 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:23,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash 315095993, now seen corresponding path program 169 times [2022-01-18 13:31:23,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:23,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381211780] [2022-01-18 13:31:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:23,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:23,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:23,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381211780] [2022-01-18 13:31:23,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381211780] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:23,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664998725] [2022-01-18 13:31:23,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:31:23,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:23,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:23,959 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:23,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-01-18 13:31:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:24,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:31:24,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:24,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:25,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664998725] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:25,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:25,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-01-18 13:31:25,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569796667] [2022-01-18 13:31:25,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:25,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:31:25,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:31:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:31:25,062 INFO L87 Difference]: Start difference. First operand 5553 states and 15771 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:30,227 INFO L93 Difference]: Finished difference Result 8553 states and 23935 transitions. [2022-01-18 13:31:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-01-18 13:31:30,227 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:30,240 INFO L225 Difference]: With dead ends: 8553 [2022-01-18 13:31:30,240 INFO L226 Difference]: Without dead ends: 8472 [2022-01-18 13:31:30,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13300 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3909, Invalid=33147, Unknown=0, NotChecked=0, Total=37056 [2022-01-18 13:31:30,244 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 819 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:30,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 4398 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:31:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2022-01-18 13:31:30,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 5817. [2022-01-18 13:31:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 5816 states have (on average 2.8371733149931226) internal successors, (16501), 5816 states have internal predecessors, (16501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 16501 transitions. [2022-01-18 13:31:30,335 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 16501 transitions. Word has length 78 [2022-01-18 13:31:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:30,335 INFO L470 AbstractCegarLoop]: Abstraction has 5817 states and 16501 transitions. [2022-01-18 13:31:30,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 16501 transitions. [2022-01-18 13:31:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:30,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:30,342 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:30,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:30,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-01-18 13:31:30,558 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2087972053, now seen corresponding path program 170 times [2022-01-18 13:31:30,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464985195] [2022-01-18 13:31:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:30,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:30,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464985195] [2022-01-18 13:31:30,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464985195] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942032022] [2022-01-18 13:31:30,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:31:30,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:30,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:30,678 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:30,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-01-18 13:31:30,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:31:30,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:30,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:31:30,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:31,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:31,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942032022] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:31,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:31,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-01-18 13:31:31,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781718107] [2022-01-18 13:31:31,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:31,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:31:31,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:31,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:31:31,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:31:31,740 INFO L87 Difference]: Start difference. First operand 5817 states and 16501 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:35,793 INFO L93 Difference]: Finished difference Result 8475 states and 23655 transitions. [2022-01-18 13:31:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-18 13:31:35,793 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:35,805 INFO L225 Difference]: With dead ends: 8475 [2022-01-18 13:31:35,805 INFO L226 Difference]: Without dead ends: 8394 [2022-01-18 13:31:35,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7756 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2589, Invalid=20363, Unknown=0, NotChecked=0, Total=22952 [2022-01-18 13:31:35,807 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 865 mSDsluCounter, 4957 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 4937 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:35,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 4937 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:31:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8394 states. [2022-01-18 13:31:35,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8394 to 6105. [2022-01-18 13:31:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 6104 states have (on average 2.838302752293578) internal successors, (17325), 6104 states have internal predecessors, (17325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 17325 transitions. [2022-01-18 13:31:35,892 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 17325 transitions. Word has length 78 [2022-01-18 13:31:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:35,892 INFO L470 AbstractCegarLoop]: Abstraction has 6105 states and 17325 transitions. [2022-01-18 13:31:35,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 17325 transitions. [2022-01-18 13:31:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:35,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:35,899 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:35,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:36,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-01-18 13:31:36,101 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1315963339, now seen corresponding path program 171 times [2022-01-18 13:31:36,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:36,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145686304] [2022-01-18 13:31:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:36,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:31:36,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145686304] [2022-01-18 13:31:36,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145686304] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459506895] [2022-01-18 13:31:36,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:31:36,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:36,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:36,209 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:36,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-01-18 13:31:36,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:31:36,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:36,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:31:36,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:31:36,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:31:36,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459506895] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:36,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:36,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 36 [2022-01-18 13:31:36,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591803263] [2022-01-18 13:31:36,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:36,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 13:31:36,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 13:31:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 13:31:36,804 INFO L87 Difference]: Start difference. First operand 6105 states and 17325 transitions. Second operand has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:39,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:39,214 INFO L93 Difference]: Finished difference Result 7797 states and 21911 transitions. [2022-01-18 13:31:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-18 13:31:39,215 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:39,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:39,225 INFO L225 Difference]: With dead ends: 7797 [2022-01-18 13:31:39,226 INFO L226 Difference]: Without dead ends: 7731 [2022-01-18 13:31:39,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8673 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3430, Invalid=21692, Unknown=0, NotChecked=0, Total=25122 [2022-01-18 13:31:39,229 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 929 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 3272 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:39,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 3272 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:31:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2022-01-18 13:31:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 5501. [2022-01-18 13:31:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5501 states, 5500 states have (on average 2.829818181818182) internal successors, (15564), 5500 states have internal predecessors, (15564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:39,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5501 states to 5501 states and 15564 transitions. [2022-01-18 13:31:39,299 INFO L78 Accepts]: Start accepts. Automaton has 5501 states and 15564 transitions. Word has length 78 [2022-01-18 13:31:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:39,300 INFO L470 AbstractCegarLoop]: Abstraction has 5501 states and 15564 transitions. [2022-01-18 13:31:39,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5501 states and 15564 transitions. [2022-01-18 13:31:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:39,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:39,305 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:39,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:39,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2022-01-18 13:31:39,514 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:39,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:39,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1749447751, now seen corresponding path program 172 times [2022-01-18 13:31:39,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:39,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634705114] [2022-01-18 13:31:39,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:39,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:39,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634705114] [2022-01-18 13:31:39,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634705114] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714061086] [2022-01-18 13:31:39,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:31:39,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:39,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:39,681 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:39,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-01-18 13:31:39,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:31:39,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:39,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 13:31:39,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:40,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:40,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714061086] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:40,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:40,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 36 [2022-01-18 13:31:40,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291952501] [2022-01-18 13:31:40,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:40,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 13:31:40,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 13:31:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 13:31:40,685 INFO L87 Difference]: Start difference. First operand 5501 states and 15564 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:45,573 INFO L93 Difference]: Finished difference Result 10735 states and 30047 transitions. [2022-01-18 13:31:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-18 13:31:45,573 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:45,588 INFO L225 Difference]: With dead ends: 10735 [2022-01-18 13:31:45,589 INFO L226 Difference]: Without dead ends: 10567 [2022-01-18 13:31:45,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12559 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4629, Invalid=28313, Unknown=0, NotChecked=0, Total=32942 [2022-01-18 13:31:45,592 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1046 mSDsluCounter, 4438 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 4377 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:45,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 4377 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:31:45,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-01-18 13:31:45,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 7401. [2022-01-18 13:31:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 7400 states have (on average 2.877972972972973) internal successors, (21297), 7400 states have internal predecessors, (21297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 21297 transitions. [2022-01-18 13:31:45,708 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 21297 transitions. Word has length 78 [2022-01-18 13:31:45,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:45,709 INFO L470 AbstractCegarLoop]: Abstraction has 7401 states and 21297 transitions. [2022-01-18 13:31:45,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 21297 transitions. [2022-01-18 13:31:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:45,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:45,717 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:45,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:45,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:45,933 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 623584733, now seen corresponding path program 173 times [2022-01-18 13:31:45,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:45,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555581041] [2022-01-18 13:31:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:45,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:46,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:46,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555581041] [2022-01-18 13:31:46,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555581041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:46,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109660526] [2022-01-18 13:31:46,097 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:31:46,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:46,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:46,098 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:46,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-01-18 13:31:46,245 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:31:46,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:46,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:31:46,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:46,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:47,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109660526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:47,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:47,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 46 [2022-01-18 13:31:47,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57519758] [2022-01-18 13:31:47,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:47,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 13:31:47,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:47,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 13:31:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1891, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:31:47,434 INFO L87 Difference]: Start difference. First operand 7401 states and 21297 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:57,961 INFO L93 Difference]: Finished difference Result 19985 states and 56953 transitions. [2022-01-18 13:31:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2022-01-18 13:31:57,961 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:31:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:57,992 INFO L225 Difference]: With dead ends: 19985 [2022-01-18 13:31:57,992 INFO L226 Difference]: Without dead ends: 19759 [2022-01-18 13:31:58,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49321 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=13607, Invalid=107149, Unknown=0, NotChecked=0, Total=120756 [2022-01-18 13:31:58,000 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 2122 mSDsluCounter, 6894 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 6915 SdHoareTripleChecker+Invalid, 4536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:58,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2122 Valid, 6915 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:31:58,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19759 states. [2022-01-18 13:31:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19759 to 11256. [2022-01-18 13:31:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11256 states, 11255 states have (on average 2.9018214127054645) internal successors, (32660), 11255 states have internal predecessors, (32660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11256 states to 11256 states and 32660 transitions. [2022-01-18 13:31:58,215 INFO L78 Accepts]: Start accepts. Automaton has 11256 states and 32660 transitions. Word has length 78 [2022-01-18 13:31:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:58,215 INFO L470 AbstractCegarLoop]: Abstraction has 11256 states and 32660 transitions. [2022-01-18 13:31:58,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 11256 states and 32660 transitions. [2022-01-18 13:31:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:31:58,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:58,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:58,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2022-01-18 13:31:58,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:58,439 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1716786247, now seen corresponding path program 174 times [2022-01-18 13:31:58,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:58,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26692507] [2022-01-18 13:31:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:58,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:58,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:58,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26692507] [2022-01-18 13:31:58,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26692507] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:31:58,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727823349] [2022-01-18 13:31:58,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:31:58,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:31:58,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:31:58,634 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:31:58,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-01-18 13:31:58,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:31:58,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:31:58,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:31:58,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:31:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:59,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:31:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:59,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727823349] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:31:59,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:31:59,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 46 [2022-01-18 13:31:59,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918441186] [2022-01-18 13:31:59,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:31:59,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 13:31:59,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:59,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 13:31:59,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1901, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:31:59,575 INFO L87 Difference]: Start difference. First operand 11256 states and 32660 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:09,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:09,547 INFO L93 Difference]: Finished difference Result 19167 states and 54528 transitions. [2022-01-18 13:32:09,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2022-01-18 13:32:09,547 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:09,575 INFO L225 Difference]: With dead ends: 19167 [2022-01-18 13:32:09,575 INFO L226 Difference]: Without dead ends: 18556 [2022-01-18 13:32:09,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39536 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=11399, Invalid=88141, Unknown=0, NotChecked=0, Total=99540 [2022-01-18 13:32:09,581 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1914 mSDsluCounter, 7236 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 7250 SdHoareTripleChecker+Invalid, 4302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:09,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1914 Valid, 7250 Invalid, 4302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 3899 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:32:09,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18556 states. [2022-01-18 13:32:09,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18556 to 11624. [2022-01-18 13:32:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11624 states, 11623 states have (on average 2.8925406521552093) internal successors, (33620), 11623 states have internal predecessors, (33620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11624 states to 11624 states and 33620 transitions. [2022-01-18 13:32:09,795 INFO L78 Accepts]: Start accepts. Automaton has 11624 states and 33620 transitions. Word has length 78 [2022-01-18 13:32:09,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:09,795 INFO L470 AbstractCegarLoop]: Abstraction has 11624 states and 33620 transitions. [2022-01-18 13:32:09,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 11624 states and 33620 transitions. [2022-01-18 13:32:09,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:09,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:09,808 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:09,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Forceful destruction successful, exit code 0 [2022-01-18 13:32:10,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-01-18 13:32:10,024 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:10,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:10,024 INFO L85 PathProgramCache]: Analyzing trace with hash -115417865, now seen corresponding path program 175 times [2022-01-18 13:32:10,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:10,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806343221] [2022-01-18 13:32:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:10,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:10,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:10,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806343221] [2022-01-18 13:32:10,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806343221] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:10,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787609902] [2022-01-18 13:32:10,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:32:10,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:10,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:10,172 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:10,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-01-18 13:32:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:10,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:32:10,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:10,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:11,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787609902] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:11,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:11,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-01-18 13:32:11,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822718321] [2022-01-18 13:32:11,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:11,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:32:11,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:32:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:32:11,297 INFO L87 Difference]: Start difference. First operand 11624 states and 33620 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:19,426 INFO L93 Difference]: Finished difference Result 23195 states and 66287 transitions. [2022-01-18 13:32:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-01-18 13:32:19,427 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:19,463 INFO L225 Difference]: With dead ends: 23195 [2022-01-18 13:32:19,464 INFO L226 Difference]: Without dead ends: 22407 [2022-01-18 13:32:19,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21092 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=7444, Invalid=46612, Unknown=0, NotChecked=0, Total=54056 [2022-01-18 13:32:19,469 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1354 mSDsluCounter, 5730 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:19,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 5683 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:32:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22407 states. [2022-01-18 13:32:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22407 to 13840. [2022-01-18 13:32:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13840 states, 13839 states have (on average 2.907001951008021) internal successors, (40230), 13839 states have internal predecessors, (40230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13840 states to 13840 states and 40230 transitions. [2022-01-18 13:32:19,817 INFO L78 Accepts]: Start accepts. Automaton has 13840 states and 40230 transitions. Word has length 78 [2022-01-18 13:32:19,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:19,817 INFO L470 AbstractCegarLoop]: Abstraction has 13840 states and 40230 transitions. [2022-01-18 13:32:19,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 13840 states and 40230 transitions. [2022-01-18 13:32:19,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:19,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:19,833 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:19,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-01-18 13:32:20,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:20,051 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1870701639, now seen corresponding path program 176 times [2022-01-18 13:32:20,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:20,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811741914] [2022-01-18 13:32:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:20,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:20,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:20,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811741914] [2022-01-18 13:32:20,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811741914] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:20,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749865691] [2022-01-18 13:32:20,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:32:20,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:20,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:20,185 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:20,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-01-18 13:32:20,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:32:20,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:32:20,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:32:20,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:20,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:21,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749865691] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:21,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:21,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:32:21,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072373346] [2022-01-18 13:32:21,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:21,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:32:21,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:21,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:32:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:32:21,420 INFO L87 Difference]: Start difference. First operand 13840 states and 40230 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:23,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:23,650 INFO L93 Difference]: Finished difference Result 18287 states and 52330 transitions. [2022-01-18 13:32:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 13:32:23,650 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:23,684 INFO L225 Difference]: With dead ends: 18287 [2022-01-18 13:32:23,684 INFO L226 Difference]: Without dead ends: 18221 [2022-01-18 13:32:23,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3545 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1658, Invalid=10774, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 13:32:23,686 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 523 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 4804 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:23,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 4804 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:32:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18221 states. [2022-01-18 13:32:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18221 to 14184. [2022-01-18 13:32:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14184 states, 14183 states have (on average 2.9110907424381303) internal successors, (41288), 14183 states have internal predecessors, (41288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14184 states to 14184 states and 41288 transitions. [2022-01-18 13:32:23,940 INFO L78 Accepts]: Start accepts. Automaton has 14184 states and 41288 transitions. Word has length 78 [2022-01-18 13:32:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:23,941 INFO L470 AbstractCegarLoop]: Abstraction has 14184 states and 41288 transitions. [2022-01-18 13:32:23,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14184 states and 41288 transitions. [2022-01-18 13:32:23,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:23,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:23,960 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:23,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2022-01-18 13:32:24,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:24,176 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:24,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1302268113, now seen corresponding path program 177 times [2022-01-18 13:32:24,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:24,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029783792] [2022-01-18 13:32:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:24,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:24,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029783792] [2022-01-18 13:32:24,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029783792] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864750375] [2022-01-18 13:32:24,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:32:24,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:24,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:24,304 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:24,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-01-18 13:32:24,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:32:24,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:32:24,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:32:24,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:32:24,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:32:24,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864750375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:24,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:24,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 36 [2022-01-18 13:32:24,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441522622] [2022-01-18 13:32:24,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:24,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 13:32:24,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 13:32:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 13:32:24,986 INFO L87 Difference]: Start difference. First operand 14184 states and 41288 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:27,074 INFO L93 Difference]: Finished difference Result 21124 states and 61585 transitions. [2022-01-18 13:32:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 13:32:27,074 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:27,107 INFO L225 Difference]: With dead ends: 21124 [2022-01-18 13:32:27,107 INFO L226 Difference]: Without dead ends: 20256 [2022-01-18 13:32:27,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3859 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2127, Invalid=11445, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 13:32:27,108 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 713 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 4153 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:27,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 4153 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:32:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20256 states. [2022-01-18 13:32:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20256 to 9570. [2022-01-18 13:32:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9570 states, 9569 states have (on average 2.8057268262096353) internal successors, (26848), 9569 states have internal predecessors, (26848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 26848 transitions. [2022-01-18 13:32:27,314 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 26848 transitions. Word has length 78 [2022-01-18 13:32:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:27,314 INFO L470 AbstractCegarLoop]: Abstraction has 9570 states and 26848 transitions. [2022-01-18 13:32:27,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:27,314 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 26848 transitions. [2022-01-18 13:32:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:27,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:27,325 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:27,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2022-01-18 13:32:27,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:27,529 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:27,529 INFO L85 PathProgramCache]: Analyzing trace with hash -453015661, now seen corresponding path program 178 times [2022-01-18 13:32:27,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:27,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356613186] [2022-01-18 13:32:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:27,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:27,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:27,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356613186] [2022-01-18 13:32:27,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356613186] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:27,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299463258] [2022-01-18 13:32:27,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:32:27,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:27,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:27,652 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:27,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-01-18 13:32:27,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:32:27,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:32:27,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 13:32:27,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:28,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:28,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299463258] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:28,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:28,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-01-18 13:32:28,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991795147] [2022-01-18 13:32:28,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:28,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 13:32:28,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:28,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 13:32:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:32:28,441 INFO L87 Difference]: Start difference. First operand 9570 states and 26848 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:33,579 INFO L93 Difference]: Finished difference Result 13860 states and 38419 transitions. [2022-01-18 13:32:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-18 13:32:33,579 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:33,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:33,601 INFO L225 Difference]: With dead ends: 13860 [2022-01-18 13:32:33,601 INFO L226 Difference]: Without dead ends: 13630 [2022-01-18 13:32:33,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13761 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3787, Invalid=34433, Unknown=0, NotChecked=0, Total=38220 [2022-01-18 13:32:33,604 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 953 mSDsluCounter, 5445 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 5484 SdHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:33,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 5484 Invalid, 3131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:32:33,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13630 states. [2022-01-18 13:32:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13630 to 9910. [2022-01-18 13:32:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 9909 states have (on average 2.807447774750227) internal successors, (27819), 9909 states have internal predecessors, (27819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 27819 transitions. [2022-01-18 13:32:33,774 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 27819 transitions. Word has length 78 [2022-01-18 13:32:33,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:33,774 INFO L470 AbstractCegarLoop]: Abstraction has 9910 states and 27819 transitions. [2022-01-18 13:32:33,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:33,774 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 27819 transitions. [2022-01-18 13:32:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:33,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:33,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:33,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2022-01-18 13:32:33,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-01-18 13:32:33,999 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -425959533, now seen corresponding path program 179 times [2022-01-18 13:32:33,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:33,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194695201] [2022-01-18 13:32:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:33,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:34,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:34,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194695201] [2022-01-18 13:32:34,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194695201] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:34,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88739376] [2022-01-18 13:32:34,111 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:32:34,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:34,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:34,112 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:34,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-01-18 13:32:34,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:32:34,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:32:34,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:32:34,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:34,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:35,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88739376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:35,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:35,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-01-18 13:32:35,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757906445] [2022-01-18 13:32:35,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:35,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:32:35,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:32:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:32:35,038 INFO L87 Difference]: Start difference. First operand 9910 states and 27819 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:38,643 INFO L93 Difference]: Finished difference Result 13650 states and 37880 transitions. [2022-01-18 13:32:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-18 13:32:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:38,664 INFO L225 Difference]: With dead ends: 13650 [2022-01-18 13:32:38,664 INFO L226 Difference]: Without dead ends: 13486 [2022-01-18 13:32:38,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8753 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3695, Invalid=22387, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 13:32:38,666 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 825 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:38,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 4286 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:32:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2022-01-18 13:32:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 9974. [2022-01-18 13:32:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9974 states, 9973 states have (on average 2.807079113606738) internal successors, (27995), 9973 states have internal predecessors, (27995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9974 states to 9974 states and 27995 transitions. [2022-01-18 13:32:38,835 INFO L78 Accepts]: Start accepts. Automaton has 9974 states and 27995 transitions. Word has length 78 [2022-01-18 13:32:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:38,835 INFO L470 AbstractCegarLoop]: Abstraction has 9974 states and 27995 transitions. [2022-01-18 13:32:38,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 9974 states and 27995 transitions. [2022-01-18 13:32:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:38,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:38,849 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:38,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Forceful destruction successful, exit code 0 [2022-01-18 13:32:39,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2022-01-18 13:32:39,063 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:39,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1803434457, now seen corresponding path program 180 times [2022-01-18 13:32:39,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:39,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443502990] [2022-01-18 13:32:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:39,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:39,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:39,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443502990] [2022-01-18 13:32:39,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443502990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:39,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367920115] [2022-01-18 13:32:39,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:32:39,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:39,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:39,202 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:39,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-01-18 13:32:39,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:32:39,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:32:39,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:32:39,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:39,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:40,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367920115] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:40,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:40,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:32:40,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620794689] [2022-01-18 13:32:40,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:40,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:32:40,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:32:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:32:40,150 INFO L87 Difference]: Start difference. First operand 9974 states and 27995 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:42,936 INFO L93 Difference]: Finished difference Result 14610 states and 40664 transitions. [2022-01-18 13:32:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 13:32:42,937 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:42,958 INFO L225 Difference]: With dead ends: 14610 [2022-01-18 13:32:42,958 INFO L226 Difference]: Without dead ends: 14495 [2022-01-18 13:32:42,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4579 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2313, Invalid=13187, Unknown=0, NotChecked=0, Total=15500 [2022-01-18 13:32:42,960 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 765 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:42,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 3582 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:32:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14495 states. [2022-01-18 13:32:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14495 to 10198. [2022-01-18 13:32:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10198 states, 10197 states have (on average 2.8136706874570954) internal successors, (28691), 10197 states have internal predecessors, (28691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:43,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10198 states to 10198 states and 28691 transitions. [2022-01-18 13:32:43,166 INFO L78 Accepts]: Start accepts. Automaton has 10198 states and 28691 transitions. Word has length 78 [2022-01-18 13:32:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:43,166 INFO L470 AbstractCegarLoop]: Abstraction has 10198 states and 28691 transitions. [2022-01-18 13:32:43,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 10198 states and 28691 transitions. [2022-01-18 13:32:43,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:43,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:43,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:43,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2022-01-18 13:32:43,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-01-18 13:32:43,391 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash -547194229, now seen corresponding path program 181 times [2022-01-18 13:32:43,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:43,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324684163] [2022-01-18 13:32:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:43,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:43,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:43,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324684163] [2022-01-18 13:32:43,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324684163] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:43,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670069327] [2022-01-18 13:32:43,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:32:43,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:43,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:43,562 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:43,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-01-18 13:32:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:43,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:32:43,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:43,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:44,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670069327] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:44,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:44,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:32:44,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235922909] [2022-01-18 13:32:44,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:44,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:32:44,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:32:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:32:44,559 INFO L87 Difference]: Start difference. First operand 10198 states and 28691 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:47,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:47,942 INFO L93 Difference]: Finished difference Result 14982 states and 41643 transitions. [2022-01-18 13:32:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 13:32:47,942 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:47,964 INFO L225 Difference]: With dead ends: 14982 [2022-01-18 13:32:47,965 INFO L226 Difference]: Without dead ends: 14867 [2022-01-18 13:32:47,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6419 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2708, Invalid=17032, Unknown=0, NotChecked=0, Total=19740 [2022-01-18 13:32:47,967 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 656 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:47,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 3832 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:32:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14867 states. [2022-01-18 13:32:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14867 to 10246. [2022-01-18 13:32:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10246 states, 10245 states have (on average 2.814543679843826) internal successors, (28835), 10245 states have internal predecessors, (28835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 28835 transitions. [2022-01-18 13:32:48,132 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 28835 transitions. Word has length 78 [2022-01-18 13:32:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:48,132 INFO L470 AbstractCegarLoop]: Abstraction has 10246 states and 28835 transitions. [2022-01-18 13:32:48,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 28835 transitions. [2022-01-18 13:32:48,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:48,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:48,143 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:48,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Ended with exit code 0 [2022-01-18 13:32:48,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2022-01-18 13:32:48,351 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash 709400439, now seen corresponding path program 182 times [2022-01-18 13:32:48,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:48,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562493400] [2022-01-18 13:32:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:48,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:48,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562493400] [2022-01-18 13:32:48,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562493400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50573818] [2022-01-18 13:32:48,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:32:48,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:48,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:48,527 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:48,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-01-18 13:32:48,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:32:48,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:32:48,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:32:48,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:48,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:49,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50573818] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:49,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:49,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-01-18 13:32:49,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731418668] [2022-01-18 13:32:49,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:49,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:32:49,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:32:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:32:49,614 INFO L87 Difference]: Start difference. First operand 10246 states and 28835 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:56,877 INFO L93 Difference]: Finished difference Result 21688 states and 60175 transitions. [2022-01-18 13:32:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-01-18 13:32:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:32:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:56,911 INFO L225 Difference]: With dead ends: 21688 [2022-01-18 13:32:56,911 INFO L226 Difference]: Without dead ends: 21508 [2022-01-18 13:32:56,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19465 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=7477, Invalid=42923, Unknown=0, NotChecked=0, Total=50400 [2022-01-18 13:32:56,916 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1080 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 4242 SdHoareTripleChecker+Invalid, 2676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:56,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1080 Valid, 4242 Invalid, 2676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:32:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21508 states. [2022-01-18 13:32:57,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21508 to 11138. [2022-01-18 13:32:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11138 states, 11137 states have (on average 2.8219448684564963) internal successors, (31428), 11137 states have internal predecessors, (31428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11138 states to 11138 states and 31428 transitions. [2022-01-18 13:32:57,163 INFO L78 Accepts]: Start accepts. Automaton has 11138 states and 31428 transitions. Word has length 78 [2022-01-18 13:32:57,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:57,164 INFO L470 AbstractCegarLoop]: Abstraction has 11138 states and 31428 transitions. [2022-01-18 13:32:57,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:57,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11138 states and 31428 transitions. [2022-01-18 13:32:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:32:57,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:57,176 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:57,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2022-01-18 13:32:57,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:57,384 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:57,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1813081975, now seen corresponding path program 183 times [2022-01-18 13:32:57,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:57,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087080864] [2022-01-18 13:32:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:57,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:57,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:57,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087080864] [2022-01-18 13:32:57,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087080864] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:32:57,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031497315] [2022-01-18 13:32:57,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:32:57,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:32:57,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:32:57,550 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:32:57,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-01-18 13:32:57,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:32:57,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:32:57,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:32:57,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:32:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:57,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:32:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:58,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031497315] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:32:58,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:32:58,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-01-18 13:32:58,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869145266] [2022-01-18 13:32:58,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:32:58,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:32:58,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:32:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:32:58,431 INFO L87 Difference]: Start difference. First operand 11138 states and 31428 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:05,247 INFO L93 Difference]: Finished difference Result 23070 states and 64218 transitions. [2022-01-18 13:33:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-01-18 13:33:05,247 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:05,284 INFO L225 Difference]: With dead ends: 23070 [2022-01-18 13:33:05,284 INFO L226 Difference]: Without dead ends: 22984 [2022-01-18 13:33:05,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20858 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=8016, Invalid=46040, Unknown=0, NotChecked=0, Total=54056 [2022-01-18 13:33:05,288 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 937 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 2861 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 4688 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:05,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 4688 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2861 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:33:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22984 states. [2022-01-18 13:33:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22984 to 11466. [2022-01-18 13:33:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11466 states, 11465 states have (on average 2.8240732664631487) internal successors, (32378), 11465 states have internal predecessors, (32378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11466 states to 11466 states and 32378 transitions. [2022-01-18 13:33:05,561 INFO L78 Accepts]: Start accepts. Automaton has 11466 states and 32378 transitions. Word has length 78 [2022-01-18 13:33:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:05,561 INFO L470 AbstractCegarLoop]: Abstraction has 11466 states and 32378 transitions. [2022-01-18 13:33:05,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 11466 states and 32378 transitions. [2022-01-18 13:33:05,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:05,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:05,577 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:05,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2022-01-18 13:33:05,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:05,795 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:05,795 INFO L85 PathProgramCache]: Analyzing trace with hash 182463013, now seen corresponding path program 184 times [2022-01-18 13:33:05,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:05,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607262349] [2022-01-18 13:33:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:05,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:05,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607262349] [2022-01-18 13:33:05,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607262349] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020125508] [2022-01-18 13:33:05,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:33:05,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:05,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:05,937 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:05,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-01-18 13:33:06,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:33:06,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:06,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 13:33:06,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:06,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:06,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020125508] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:06,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:06,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-01-18 13:33:06,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733587142] [2022-01-18 13:33:06,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:06,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:33:06,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:33:06,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1487, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:33:06,743 INFO L87 Difference]: Start difference. First operand 11466 states and 32378 transitions. Second operand has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:08,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:08,546 INFO L93 Difference]: Finished difference Result 15264 states and 42756 transitions. [2022-01-18 13:33:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 13:33:08,546 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:08,571 INFO L225 Difference]: With dead ends: 15264 [2022-01-18 13:33:08,571 INFO L226 Difference]: Without dead ends: 15105 [2022-01-18 13:33:08,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3521 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1596, Invalid=10176, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 13:33:08,572 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 496 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:08,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 3972 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:33:08,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15105 states. [2022-01-18 13:33:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15105 to 11546. [2022-01-18 13:33:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11546 states, 11545 states have (on average 2.824945864010394) internal successors, (32614), 11545 states have internal predecessors, (32614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11546 states to 11546 states and 32614 transitions. [2022-01-18 13:33:08,774 INFO L78 Accepts]: Start accepts. Automaton has 11546 states and 32614 transitions. Word has length 78 [2022-01-18 13:33:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:08,774 INFO L470 AbstractCegarLoop]: Abstraction has 11546 states and 32614 transitions. [2022-01-18 13:33:08,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 11546 states and 32614 transitions. [2022-01-18 13:33:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:08,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:08,787 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:08,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2022-01-18 13:33:09,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2022-01-18 13:33:09,003 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1103059645, now seen corresponding path program 185 times [2022-01-18 13:33:09,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:09,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599359236] [2022-01-18 13:33:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:09,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:09,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599359236] [2022-01-18 13:33:09,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599359236] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911304716] [2022-01-18 13:33:09,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:33:09,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:09,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:09,114 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:09,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2022-01-18 13:33:09,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 13:33:09,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:09,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:33:09,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:33:09,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:33:09,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911304716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:09,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:09,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:33:09,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712950790] [2022-01-18 13:33:09,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:09,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:33:09,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:09,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:33:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:33:09,734 INFO L87 Difference]: Start difference. First operand 11546 states and 32614 transitions. Second operand has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:11,116 INFO L93 Difference]: Finished difference Result 12660 states and 35519 transitions. [2022-01-18 13:33:11,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:33:11,116 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:11,134 INFO L225 Difference]: With dead ends: 12660 [2022-01-18 13:33:11,135 INFO L226 Difference]: Without dead ends: 12553 [2022-01-18 13:33:11,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1099, Invalid=5873, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 13:33:11,136 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 276 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:11,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2775 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:33:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12553 states. [2022-01-18 13:33:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12553 to 10918. [2022-01-18 13:33:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10918 states, 10917 states have (on average 2.8233947055051756) internal successors, (30823), 10917 states have internal predecessors, (30823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10918 states to 10918 states and 30823 transitions. [2022-01-18 13:33:11,290 INFO L78 Accepts]: Start accepts. Automaton has 10918 states and 30823 transitions. Word has length 78 [2022-01-18 13:33:11,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:11,290 INFO L470 AbstractCegarLoop]: Abstraction has 10918 states and 30823 transitions. [2022-01-18 13:33:11,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand 10918 states and 30823 transitions. [2022-01-18 13:33:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:11,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:11,302 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:11,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Forceful destruction successful, exit code 0 [2022-01-18 13:33:11,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:11,518 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash 4811181, now seen corresponding path program 186 times [2022-01-18 13:33:11,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:11,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055155331] [2022-01-18 13:33:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:11,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:11,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:11,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055155331] [2022-01-18 13:33:11,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055155331] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879979172] [2022-01-18 13:33:11,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:33:11,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:11,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:11,686 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:11,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2022-01-18 13:33:11,844 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:33:11,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:11,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:33:11,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:12,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:12,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879979172] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:12,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:12,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:33:12,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143400348] [2022-01-18 13:33:12,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:12,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:33:12,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:33:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:33:12,772 INFO L87 Difference]: Start difference. First operand 10918 states and 30823 transitions. Second operand has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:15,840 INFO L93 Difference]: Finished difference Result 16380 states and 45889 transitions. [2022-01-18 13:33:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 13:33:15,840 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:15,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:15,864 INFO L225 Difference]: With dead ends: 16380 [2022-01-18 13:33:15,864 INFO L226 Difference]: Without dead ends: 16185 [2022-01-18 13:33:15,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6490 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3142, Invalid=16880, Unknown=0, NotChecked=0, Total=20022 [2022-01-18 13:33:15,866 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 706 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:15,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 4173 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2022-01-18 13:33:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 11082. [2022-01-18 13:33:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11082 states, 11081 states have (on average 2.8230304124176517) internal successors, (31282), 11081 states have internal predecessors, (31282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11082 states to 11082 states and 31282 transitions. [2022-01-18 13:33:16,046 INFO L78 Accepts]: Start accepts. Automaton has 11082 states and 31282 transitions. Word has length 78 [2022-01-18 13:33:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:16,047 INFO L470 AbstractCegarLoop]: Abstraction has 11082 states and 31282 transitions. [2022-01-18 13:33:16,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:16,047 INFO L276 IsEmpty]: Start isEmpty. Operand 11082 states and 31282 transitions. [2022-01-18 13:33:16,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:16,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:16,059 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:16,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2022-01-18 13:33:16,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:16,273 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2025598497, now seen corresponding path program 187 times [2022-01-18 13:33:16,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:16,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808474110] [2022-01-18 13:33:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:16,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:16,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:16,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808474110] [2022-01-18 13:33:16,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808474110] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:16,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865810487] [2022-01-18 13:33:16,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:33:16,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:16,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:16,444 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:16,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2022-01-18 13:33:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:16,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:33:16,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:16,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:17,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865810487] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:17,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:17,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:33:17,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903418081] [2022-01-18 13:33:17,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:17,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:33:17,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:33:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:33:17,669 INFO L87 Difference]: Start difference. First operand 11082 states and 31282 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:21,679 INFO L93 Difference]: Finished difference Result 18800 states and 52606 transitions. [2022-01-18 13:33:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 13:33:21,679 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:21,705 INFO L225 Difference]: With dead ends: 18800 [2022-01-18 13:33:21,705 INFO L226 Difference]: Without dead ends: 18730 [2022-01-18 13:33:21,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7950 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4199, Invalid=19363, Unknown=0, NotChecked=0, Total=23562 [2022-01-18 13:33:21,707 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 946 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:21,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3731 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:33:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18730 states. [2022-01-18 13:33:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18730 to 11110. [2022-01-18 13:33:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11110 states, 11109 states have (on average 2.8235664776307496) internal successors, (31367), 11109 states have internal predecessors, (31367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11110 states to 11110 states and 31367 transitions. [2022-01-18 13:33:21,901 INFO L78 Accepts]: Start accepts. Automaton has 11110 states and 31367 transitions. Word has length 78 [2022-01-18 13:33:21,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:21,901 INFO L470 AbstractCegarLoop]: Abstraction has 11110 states and 31367 transitions. [2022-01-18 13:33:21,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 11110 states and 31367 transitions. [2022-01-18 13:33:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:21,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:21,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:21,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Forceful destruction successful, exit code 0 [2022-01-18 13:33:22,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219 [2022-01-18 13:33:22,130 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:22,131 INFO L85 PathProgramCache]: Analyzing trace with hash 982759853, now seen corresponding path program 188 times [2022-01-18 13:33:22,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:22,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387810287] [2022-01-18 13:33:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:22,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:22,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:22,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387810287] [2022-01-18 13:33:22,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387810287] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:22,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900925938] [2022-01-18 13:33:22,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:33:22,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:22,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:22,245 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:22,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2022-01-18 13:33:22,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:33:22,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:22,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:33:22,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:22,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:23,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900925938] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:23,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:23,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:33:23,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062990623] [2022-01-18 13:33:23,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:23,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:33:23,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:33:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1602, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:33:23,080 INFO L87 Difference]: Start difference. First operand 11110 states and 31367 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:26,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:26,598 INFO L93 Difference]: Finished difference Result 19035 states and 53196 transitions. [2022-01-18 13:33:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-18 13:33:26,599 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:26,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:26,625 INFO L225 Difference]: With dead ends: 19035 [2022-01-18 13:33:26,625 INFO L226 Difference]: Without dead ends: 18909 [2022-01-18 13:33:26,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8895 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4498, Invalid=21262, Unknown=0, NotChecked=0, Total=25760 [2022-01-18 13:33:26,627 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1097 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:26,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 4333 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2022-01-18 13:33:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 11074. [2022-01-18 13:33:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11074 states, 11073 states have (on average 2.8238056533911315) internal successors, (31268), 11073 states have internal predecessors, (31268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11074 states to 11074 states and 31268 transitions. [2022-01-18 13:33:26,823 INFO L78 Accepts]: Start accepts. Automaton has 11074 states and 31268 transitions. Word has length 78 [2022-01-18 13:33:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:26,824 INFO L470 AbstractCegarLoop]: Abstraction has 11074 states and 31268 transitions. [2022-01-18 13:33:26,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:26,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11074 states and 31268 transitions. [2022-01-18 13:33:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:26,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:26,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:26,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Forceful destruction successful, exit code 0 [2022-01-18 13:33:27,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:27,049 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1867223917, now seen corresponding path program 189 times [2022-01-18 13:33:27,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:27,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114681626] [2022-01-18 13:33:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:27,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:27,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:27,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114681626] [2022-01-18 13:33:27,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114681626] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:27,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219757259] [2022-01-18 13:33:27,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:33:27,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:27,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:27,184 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:27,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2022-01-18 13:33:27,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:33:27,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:27,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:33:27,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:33:27,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:33:27,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219757259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:27,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:27,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:33:27,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801243744] [2022-01-18 13:33:27,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:27,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:33:27,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:33:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:33:27,808 INFO L87 Difference]: Start difference. First operand 11074 states and 31268 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:30,292 INFO L93 Difference]: Finished difference Result 13972 states and 39074 transitions. [2022-01-18 13:33:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 13:33:30,292 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:30,312 INFO L225 Difference]: With dead ends: 13972 [2022-01-18 13:33:30,312 INFO L226 Difference]: Without dead ends: 13876 [2022-01-18 13:33:30,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4303 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2329, Invalid=11713, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 13:33:30,314 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 518 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:30,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 3953 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:33:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13876 states. [2022-01-18 13:33:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13876 to 11114. [2022-01-18 13:33:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11114 states, 11113 states have (on average 2.824979753441915) internal successors, (31394), 11113 states have internal predecessors, (31394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11114 states to 11114 states and 31394 transitions. [2022-01-18 13:33:30,482 INFO L78 Accepts]: Start accepts. Automaton has 11114 states and 31394 transitions. Word has length 78 [2022-01-18 13:33:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:30,482 INFO L470 AbstractCegarLoop]: Abstraction has 11114 states and 31394 transitions. [2022-01-18 13:33:30,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11114 states and 31394 transitions. [2022-01-18 13:33:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:30,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:30,495 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:30,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Forceful destruction successful, exit code 0 [2022-01-18 13:33:30,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2022-01-18 13:33:30,711 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1941246643, now seen corresponding path program 190 times [2022-01-18 13:33:30,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:30,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861566730] [2022-01-18 13:33:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:30,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:30,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:30,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861566730] [2022-01-18 13:33:30,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861566730] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:30,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406931226] [2022-01-18 13:33:30,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:33:30,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:30,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:30,962 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:30,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2022-01-18 13:33:31,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:33:31,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:31,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 13:33:31,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:31,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:32,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406931226] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:32,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:32,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-01-18 13:33:32,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006365118] [2022-01-18 13:33:32,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:32,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 13:33:32,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 13:33:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:33:32,068 INFO L87 Difference]: Start difference. First operand 11114 states and 31394 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:37,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:37,577 INFO L93 Difference]: Finished difference Result 18401 states and 51269 transitions. [2022-01-18 13:33:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-01-18 13:33:37,577 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:37,605 INFO L225 Difference]: With dead ends: 18401 [2022-01-18 13:33:37,605 INFO L226 Difference]: Without dead ends: 18162 [2022-01-18 13:33:37,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16569 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5082, Invalid=40074, Unknown=0, NotChecked=0, Total=45156 [2022-01-18 13:33:37,610 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1000 mSDsluCounter, 5782 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 5859 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:37,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 5859 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:33:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18162 states. [2022-01-18 13:33:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18162 to 11406. [2022-01-18 13:33:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11406 states, 11405 states have (on average 2.823761508110478) internal successors, (32205), 11405 states have internal predecessors, (32205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11406 states to 11406 states and 32205 transitions. [2022-01-18 13:33:37,850 INFO L78 Accepts]: Start accepts. Automaton has 11406 states and 32205 transitions. Word has length 78 [2022-01-18 13:33:37,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:37,850 INFO L470 AbstractCegarLoop]: Abstraction has 11406 states and 32205 transitions. [2022-01-18 13:33:37,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 11406 states and 32205 transitions. [2022-01-18 13:33:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:37,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:37,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:37,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Forceful destruction successful, exit code 0 [2022-01-18 13:33:38,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-01-18 13:33:38,071 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash -354871947, now seen corresponding path program 191 times [2022-01-18 13:33:38,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:38,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170573155] [2022-01-18 13:33:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:38,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:38,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:38,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170573155] [2022-01-18 13:33:38,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170573155] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:38,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772719435] [2022-01-18 13:33:38,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:33:38,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:38,254 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:38,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2022-01-18 13:33:38,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:33:38,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:38,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:33:38,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:38,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:39,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772719435] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:39,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:39,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:33:39,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112555475] [2022-01-18 13:33:39,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:39,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:33:39,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:33:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:33:39,480 INFO L87 Difference]: Start difference. First operand 11406 states and 32205 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:43,203 INFO L93 Difference]: Finished difference Result 15843 states and 44096 transitions. [2022-01-18 13:33:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-18 13:33:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:43,227 INFO L225 Difference]: With dead ends: 15843 [2022-01-18 13:33:43,227 INFO L226 Difference]: Without dead ends: 15651 [2022-01-18 13:33:43,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6783 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2906, Invalid=17974, Unknown=0, NotChecked=0, Total=20880 [2022-01-18 13:33:43,229 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 703 mSDsluCounter, 4908 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:43,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 4919 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:33:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15651 states. [2022-01-18 13:33:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15651 to 11422. [2022-01-18 13:33:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11422 states, 11421 states have (on average 2.8236581735399704) internal successors, (32249), 11421 states have internal predecessors, (32249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:43,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 32249 transitions. [2022-01-18 13:33:43,402 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 32249 transitions. Word has length 78 [2022-01-18 13:33:43,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:43,402 INFO L470 AbstractCegarLoop]: Abstraction has 11422 states and 32249 transitions. [2022-01-18 13:33:43,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 32249 transitions. [2022-01-18 13:33:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:43,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:43,415 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:43,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Forceful destruction successful, exit code 0 [2022-01-18 13:33:43,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:43,631 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:43,631 INFO L85 PathProgramCache]: Analyzing trace with hash 131624789, now seen corresponding path program 192 times [2022-01-18 13:33:43,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:43,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707418911] [2022-01-18 13:33:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:43,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:43,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:43,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707418911] [2022-01-18 13:33:43,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707418911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:43,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100263250] [2022-01-18 13:33:43,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:33:43,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:43,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:43,740 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:43,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2022-01-18 13:33:43,897 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:33:43,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:43,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:33:43,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:44,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:44,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100263250] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:44,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:44,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:33:44,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144197388] [2022-01-18 13:33:44,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:44,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:33:44,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:33:44,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:33:44,685 INFO L87 Difference]: Start difference. First operand 11422 states and 32249 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:47,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:47,397 INFO L93 Difference]: Finished difference Result 18670 states and 52031 transitions. [2022-01-18 13:33:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 13:33:47,397 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:47,425 INFO L225 Difference]: With dead ends: 18670 [2022-01-18 13:33:47,425 INFO L226 Difference]: Without dead ends: 18574 [2022-01-18 13:33:47,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5293 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2669, Invalid=14101, Unknown=0, NotChecked=0, Total=16770 [2022-01-18 13:33:47,427 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 629 mSDsluCounter, 4044 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:47,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 4099 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:47,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18574 states. [2022-01-18 13:33:47,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18574 to 11598. [2022-01-18 13:33:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11598 states, 11597 states have (on average 2.831508148659136) internal successors, (32837), 11597 states have internal predecessors, (32837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11598 states to 11598 states and 32837 transitions. [2022-01-18 13:33:47,632 INFO L78 Accepts]: Start accepts. Automaton has 11598 states and 32837 transitions. Word has length 78 [2022-01-18 13:33:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:47,632 INFO L470 AbstractCegarLoop]: Abstraction has 11598 states and 32837 transitions. [2022-01-18 13:33:47,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 11598 states and 32837 transitions. [2022-01-18 13:33:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:47,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:47,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:47,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2022-01-18 13:33:47,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-01-18 13:33:47,863 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:47,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash -726378461, now seen corresponding path program 193 times [2022-01-18 13:33:47,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:47,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179750353] [2022-01-18 13:33:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:47,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:48,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:48,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179750353] [2022-01-18 13:33:48,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179750353] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:48,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466932479] [2022-01-18 13:33:48,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:33:48,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:48,071 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:48,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2022-01-18 13:33:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:48,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:33:48,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:48,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:49,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466932479] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:49,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:49,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:33:49,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467431170] [2022-01-18 13:33:49,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:49,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:33:49,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:49,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:33:49,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:33:49,321 INFO L87 Difference]: Start difference. First operand 11598 states and 32837 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:52,343 INFO L93 Difference]: Finished difference Result 16958 states and 47337 transitions. [2022-01-18 13:33:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 13:33:52,343 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:52,369 INFO L225 Difference]: With dead ends: 16958 [2022-01-18 13:33:52,369 INFO L226 Difference]: Without dead ends: 16840 [2022-01-18 13:33:52,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4366 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2295, Invalid=12711, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 13:33:52,370 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 613 mSDsluCounter, 3806 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 3879 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:52,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 3879 Invalid, 2180 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:33:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16840 states. [2022-01-18 13:33:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16840 to 11618. [2022-01-18 13:33:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 2.8193165188947233) internal successors, (32752), 11617 states have internal predecessors, (32752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 32752 transitions. [2022-01-18 13:33:52,562 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 32752 transitions. Word has length 78 [2022-01-18 13:33:52,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:52,562 INFO L470 AbstractCegarLoop]: Abstraction has 11618 states and 32752 transitions. [2022-01-18 13:33:52,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 32752 transitions. [2022-01-18 13:33:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:52,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:52,575 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:52,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Forceful destruction successful, exit code 0 [2022-01-18 13:33:52,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2022-01-18 13:33:52,791 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -239881725, now seen corresponding path program 194 times [2022-01-18 13:33:52,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:52,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228250205] [2022-01-18 13:33:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:52,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:52,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:52,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228250205] [2022-01-18 13:33:52,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228250205] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:52,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730691624] [2022-01-18 13:33:52,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:33:52,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:52,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:52,957 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:52,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2022-01-18 13:33:53,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:33:53,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:53,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:33:53,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:53,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:54,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730691624] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:54,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:54,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:33:54,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107513709] [2022-01-18 13:33:54,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:54,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:33:54,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:33:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:33:54,184 INFO L87 Difference]: Start difference. First operand 11618 states and 32752 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:57,188 INFO L93 Difference]: Finished difference Result 18649 states and 51920 transitions. [2022-01-18 13:33:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 13:33:57,188 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:33:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:57,213 INFO L225 Difference]: With dead ends: 18649 [2022-01-18 13:33:57,213 INFO L226 Difference]: Without dead ends: 18555 [2022-01-18 13:33:57,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4589 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2452, Invalid=12554, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 13:33:57,214 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 565 mSDsluCounter, 3733 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3801 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:57,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 3801 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:33:57,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18555 states. [2022-01-18 13:33:57,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18555 to 11502. [2022-01-18 13:33:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11502 states, 11501 states have (on average 2.814798713155378) internal successors, (32373), 11501 states have internal predecessors, (32373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11502 states to 11502 states and 32373 transitions. [2022-01-18 13:33:57,407 INFO L78 Accepts]: Start accepts. Automaton has 11502 states and 32373 transitions. Word has length 78 [2022-01-18 13:33:57,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:57,407 INFO L470 AbstractCegarLoop]: Abstraction has 11502 states and 32373 transitions. [2022-01-18 13:33:57,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 11502 states and 32373 transitions. [2022-01-18 13:33:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:33:57,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:57,420 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:57,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Forceful destruction successful, exit code 0 [2022-01-18 13:33:57,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2022-01-18 13:33:57,637 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash -252325455, now seen corresponding path program 195 times [2022-01-18 13:33:57,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:57,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809653874] [2022-01-18 13:33:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:57,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:57,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:57,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809653874] [2022-01-18 13:33:57,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809653874] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:33:57,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564595099] [2022-01-18 13:33:57,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:33:57,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:33:57,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:33:57,757 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:33:57,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2022-01-18 13:33:57,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:33:57,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:33:57,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:33:57,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:33:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:58,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:33:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:58,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564595099] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:33:58,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:33:58,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:33:58,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232004457] [2022-01-18 13:33:58,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:33:58,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:33:58,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:58,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:33:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:33:58,582 INFO L87 Difference]: Start difference. First operand 11502 states and 32373 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:00,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:00,894 INFO L93 Difference]: Finished difference Result 18744 states and 52188 transitions. [2022-01-18 13:34:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 13:34:00,894 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:00,924 INFO L225 Difference]: With dead ends: 18744 [2022-01-18 13:34:00,925 INFO L226 Difference]: Without dead ends: 18666 [2022-01-18 13:34:00,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4275 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2228, Invalid=12292, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 13:34:00,927 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 724 mSDsluCounter, 4019 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:00,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 4075 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18666 states. [2022-01-18 13:34:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18666 to 12502. [2022-01-18 13:34:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12502 states, 12501 states have (on average 2.818894488440925) internal successors, (35239), 12501 states have internal predecessors, (35239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12502 states to 12502 states and 35239 transitions. [2022-01-18 13:34:01,239 INFO L78 Accepts]: Start accepts. Automaton has 12502 states and 35239 transitions. Word has length 78 [2022-01-18 13:34:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:01,239 INFO L470 AbstractCegarLoop]: Abstraction has 12502 states and 35239 transitions. [2022-01-18 13:34:01,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:01,239 INFO L276 IsEmpty]: Start isEmpty. Operand 12502 states and 35239 transitions. [2022-01-18 13:34:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:01,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:01,255 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:01,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Forceful destruction successful, exit code 0 [2022-01-18 13:34:01,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2022-01-18 13:34:01,471 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:01,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1137607975, now seen corresponding path program 196 times [2022-01-18 13:34:01,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:01,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331427158] [2022-01-18 13:34:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:01,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:01,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:01,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331427158] [2022-01-18 13:34:01,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331427158] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:01,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881216975] [2022-01-18 13:34:01,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:34:01,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:01,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:01,648 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:01,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2022-01-18 13:34:01,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:34:01,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:34:01,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 13:34:01,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:02,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:02,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881216975] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:02,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:02,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 39 [2022-01-18 13:34:02,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979601142] [2022-01-18 13:34:02,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:02,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 13:34:02,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 13:34:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 13:34:02,623 INFO L87 Difference]: Start difference. First operand 12502 states and 35239 transitions. Second operand has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:07,118 INFO L93 Difference]: Finished difference Result 24102 states and 67036 transitions. [2022-01-18 13:34:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-18 13:34:07,119 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:07,157 INFO L225 Difference]: With dead ends: 24102 [2022-01-18 13:34:07,157 INFO L226 Difference]: Without dead ends: 23942 [2022-01-18 13:34:07,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 134 SyntacticMatches, 4 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12282 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5313, Invalid=27993, Unknown=0, NotChecked=0, Total=33306 [2022-01-18 13:34:07,161 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 931 mSDsluCounter, 4519 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:07,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 4609 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2734 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:34:07,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23942 states. [2022-01-18 13:34:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23942 to 15262. [2022-01-18 13:34:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15262 states, 15261 states have (on average 2.8250442303911933) internal successors, (43113), 15261 states have internal predecessors, (43113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15262 states to 15262 states and 43113 transitions. [2022-01-18 13:34:07,506 INFO L78 Accepts]: Start accepts. Automaton has 15262 states and 43113 transitions. Word has length 78 [2022-01-18 13:34:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:07,506 INFO L470 AbstractCegarLoop]: Abstraction has 15262 states and 43113 transitions. [2022-01-18 13:34:07,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 15262 states and 43113 transitions. [2022-01-18 13:34:07,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:07,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:07,527 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:07,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Ended with exit code 0 [2022-01-18 13:34:07,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:07,728 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1304954027, now seen corresponding path program 197 times [2022-01-18 13:34:07,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:07,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634517610] [2022-01-18 13:34:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:07,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:07,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:07,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634517610] [2022-01-18 13:34:07,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634517610] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:07,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535635126] [2022-01-18 13:34:07,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:34:07,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:07,840 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:07,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2022-01-18 13:34:07,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:34:07,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:34:07,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:34:07,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:08,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:08,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535635126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:08,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:08,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-01-18 13:34:08,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672390347] [2022-01-18 13:34:08,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:08,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:34:08,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:34:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:34:08,655 INFO L87 Difference]: Start difference. First operand 15262 states and 43113 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:19,530 INFO L93 Difference]: Finished difference Result 25594 states and 71095 transitions. [2022-01-18 13:34:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2022-01-18 13:34:19,531 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:19,572 INFO L225 Difference]: With dead ends: 25594 [2022-01-18 13:34:19,572 INFO L226 Difference]: Without dead ends: 25273 [2022-01-18 13:34:19,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37059 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=12594, Invalid=78308, Unknown=0, NotChecked=0, Total=90902 [2022-01-18 13:34:19,580 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1200 mSDsluCounter, 5700 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 5742 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:19,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 5742 Invalid, 3636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:34:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25273 states. [2022-01-18 13:34:19,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25273 to 15922. [2022-01-18 13:34:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15922 states, 15921 states have (on average 2.8249481816468816) internal successors, (44976), 15921 states have internal predecessors, (44976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 44976 transitions. [2022-01-18 13:34:19,958 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 44976 transitions. Word has length 78 [2022-01-18 13:34:19,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:19,958 INFO L470 AbstractCegarLoop]: Abstraction has 15922 states and 44976 transitions. [2022-01-18 13:34:19,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:19,959 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 44976 transitions. [2022-01-18 13:34:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:19,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:19,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:19,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Ended with exit code 0 [2022-01-18 13:34:20,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:20,184 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash 550787949, now seen corresponding path program 198 times [2022-01-18 13:34:20,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:20,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359764634] [2022-01-18 13:34:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:20,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:20,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:20,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359764634] [2022-01-18 13:34:20,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359764634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:20,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282968397] [2022-01-18 13:34:20,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:34:20,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:20,371 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:20,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2022-01-18 13:34:20,559 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:34:20,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:34:20,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:34:20,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:34:20,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:34:21,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282968397] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:21,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:21,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:34:21,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708537404] [2022-01-18 13:34:21,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:21,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:34:21,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:34:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:34:21,068 INFO L87 Difference]: Start difference. First operand 15922 states and 44976 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:23,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:23,543 INFO L93 Difference]: Finished difference Result 17853 states and 50105 transitions. [2022-01-18 13:34:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-18 13:34:23,543 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:23,570 INFO L225 Difference]: With dead ends: 17853 [2022-01-18 13:34:23,570 INFO L226 Difference]: Without dead ends: 17738 [2022-01-18 13:34:23,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4995 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2402, Invalid=14110, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 13:34:23,572 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 428 mSDsluCounter, 4852 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:23,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 4970 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:34:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17738 states. [2022-01-18 13:34:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17738 to 15446. [2022-01-18 13:34:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15446 states, 15445 states have (on average 2.8264810618323084) internal successors, (43655), 15445 states have internal predecessors, (43655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15446 states to 15446 states and 43655 transitions. [2022-01-18 13:34:23,809 INFO L78 Accepts]: Start accepts. Automaton has 15446 states and 43655 transitions. Word has length 78 [2022-01-18 13:34:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:23,809 INFO L470 AbstractCegarLoop]: Abstraction has 15446 states and 43655 transitions. [2022-01-18 13:34:23,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 15446 states and 43655 transitions. [2022-01-18 13:34:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:23,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:23,828 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:23,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Forceful destruction successful, exit code 0 [2022-01-18 13:34:24,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:24,037 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:24,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:24,037 INFO L85 PathProgramCache]: Analyzing trace with hash -511846811, now seen corresponding path program 199 times [2022-01-18 13:34:24,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:24,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367489983] [2022-01-18 13:34:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:24,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:24,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:24,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367489983] [2022-01-18 13:34:24,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367489983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:24,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642929453] [2022-01-18 13:34:24,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:34:24,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:24,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:24,151 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:24,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2022-01-18 13:34:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:24,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:34:24,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:24,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:25,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642929453] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:25,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:25,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:34:25,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269744936] [2022-01-18 13:34:25,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:25,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:34:25,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:34:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:34:25,366 INFO L87 Difference]: Start difference. First operand 15446 states and 43655 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:33,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:33,728 INFO L93 Difference]: Finished difference Result 23252 states and 64753 transitions. [2022-01-18 13:34:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2022-01-18 13:34:33,728 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:33,760 INFO L225 Difference]: With dead ends: 23252 [2022-01-18 13:34:33,760 INFO L226 Difference]: Without dead ends: 22973 [2022-01-18 13:34:33,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25619 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=9102, Invalid=55160, Unknown=0, NotChecked=0, Total=64262 [2022-01-18 13:34:33,763 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1222 mSDsluCounter, 4558 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:33,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 4620 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:34:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22973 states. [2022-01-18 13:34:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22973 to 15622. [2022-01-18 13:34:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15622 states, 15621 states have (on average 2.8284360796363868) internal successors, (44183), 15621 states have internal predecessors, (44183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15622 states to 15622 states and 44183 transitions. [2022-01-18 13:34:34,024 INFO L78 Accepts]: Start accepts. Automaton has 15622 states and 44183 transitions. Word has length 78 [2022-01-18 13:34:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:34,024 INFO L470 AbstractCegarLoop]: Abstraction has 15622 states and 44183 transitions. [2022-01-18 13:34:34,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15622 states and 44183 transitions. [2022-01-18 13:34:34,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:34,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:34,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:34,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Forceful destruction successful, exit code 0 [2022-01-18 13:34:34,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:34,259 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:34,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash 610670549, now seen corresponding path program 200 times [2022-01-18 13:34:34,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:34,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197721664] [2022-01-18 13:34:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:34,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:34,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:34,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197721664] [2022-01-18 13:34:34,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197721664] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:34,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133090744] [2022-01-18 13:34:34,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:34:34,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:34,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:34,361 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:34,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2022-01-18 13:34:34,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:34:34,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:34:34,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:34:34,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:34,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:35,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133090744] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:35,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:35,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:34:35,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224962333] [2022-01-18 13:34:35,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:35,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:34:35,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:34:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:34:35,400 INFO L87 Difference]: Start difference. First operand 15622 states and 44183 transitions. Second operand has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:38,824 INFO L93 Difference]: Finished difference Result 18184 states and 51086 transitions. [2022-01-18 13:34:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 13:34:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:38,852 INFO L225 Difference]: With dead ends: 18184 [2022-01-18 13:34:38,852 INFO L226 Difference]: Without dead ends: 17953 [2022-01-18 13:34:38,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6579 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2907, Invalid=17115, Unknown=0, NotChecked=0, Total=20022 [2022-01-18 13:34:38,855 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 710 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3858 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:38,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3858 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:34:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17953 states. [2022-01-18 13:34:39,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17953 to 15694. [2022-01-18 13:34:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15694 states, 15693 states have (on average 2.828076212323966) internal successors, (44381), 15693 states have internal predecessors, (44381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15694 states to 15694 states and 44381 transitions. [2022-01-18 13:34:39,106 INFO L78 Accepts]: Start accepts. Automaton has 15694 states and 44381 transitions. Word has length 78 [2022-01-18 13:34:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:39,106 INFO L470 AbstractCegarLoop]: Abstraction has 15694 states and 44381 transitions. [2022-01-18 13:34:39,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 15694 states and 44381 transitions. [2022-01-18 13:34:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:39,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:39,127 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:39,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Forceful destruction successful, exit code 0 [2022-01-18 13:34:39,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2022-01-18 13:34:39,331 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:39,331 INFO L85 PathProgramCache]: Analyzing trace with hash 433018717, now seen corresponding path program 201 times [2022-01-18 13:34:39,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:39,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703422999] [2022-01-18 13:34:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:39,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:39,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703422999] [2022-01-18 13:34:39,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703422999] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569899037] [2022-01-18 13:34:39,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:34:39,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:39,478 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:39,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2022-01-18 13:34:39,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:34:39,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:34:39,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:34:39,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:34:39,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:34:40,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569899037] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:40,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:40,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:34:40,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186315941] [2022-01-18 13:34:40,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:40,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:34:40,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:34:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:34:40,198 INFO L87 Difference]: Start difference. First operand 15694 states and 44381 transitions. Second operand has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:43,129 INFO L93 Difference]: Finished difference Result 21088 states and 59368 transitions. [2022-01-18 13:34:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-18 13:34:43,129 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:43,167 INFO L225 Difference]: With dead ends: 21088 [2022-01-18 13:34:43,167 INFO L226 Difference]: Without dead ends: 20985 [2022-01-18 13:34:43,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8561 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4061, Invalid=21379, Unknown=0, NotChecked=0, Total=25440 [2022-01-18 13:34:43,170 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 493 mSDsluCounter, 3974 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:43,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 4070 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:34:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20985 states. [2022-01-18 13:34:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20985 to 15666. [2022-01-18 13:34:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15666 states, 15665 states have (on average 2.823619533992978) internal successors, (44232), 15665 states have internal predecessors, (44232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15666 states to 15666 states and 44232 transitions. [2022-01-18 13:34:43,498 INFO L78 Accepts]: Start accepts. Automaton has 15666 states and 44232 transitions. Word has length 78 [2022-01-18 13:34:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:43,498 INFO L470 AbstractCegarLoop]: Abstraction has 15666 states and 44232 transitions. [2022-01-18 13:34:43,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 15666 states and 44232 transitions. [2022-01-18 13:34:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:43,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:43,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:43,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Forceful destruction successful, exit code 0 [2022-01-18 13:34:43,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2022-01-18 13:34:43,735 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:43,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1597390961, now seen corresponding path program 202 times [2022-01-18 13:34:43,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335946577] [2022-01-18 13:34:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:43,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:43,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335946577] [2022-01-18 13:34:43,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335946577] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088431112] [2022-01-18 13:34:43,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:34:43,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:43,843 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:43,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2022-01-18 13:34:43,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:34:43,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:34:43,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 13:34:43,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:44,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:44,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088431112] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:44,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:44,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-01-18 13:34:44,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017769710] [2022-01-18 13:34:44,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:44,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:34:44,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:44,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:34:44,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1462, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:34:44,588 INFO L87 Difference]: Start difference. First operand 15666 states and 44232 transitions. Second operand has 41 states, 41 states have (on average 3.0) internal successors, (123), 41 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:47,989 INFO L93 Difference]: Finished difference Result 21403 states and 59813 transitions. [2022-01-18 13:34:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-18 13:34:47,989 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.0) internal successors, (123), 41 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:48,022 INFO L225 Difference]: With dead ends: 21403 [2022-01-18 13:34:48,022 INFO L226 Difference]: Without dead ends: 21333 [2022-01-18 13:34:48,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8857 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4479, Invalid=21603, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 13:34:48,025 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 776 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:48,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 4223 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:48,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21333 states. [2022-01-18 13:34:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21333 to 15690. [2022-01-18 13:34:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15690 states, 15689 states have (on average 2.8237618713748485) internal successors, (44302), 15689 states have internal predecessors, (44302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15690 states to 15690 states and 44302 transitions. [2022-01-18 13:34:48,327 INFO L78 Accepts]: Start accepts. Automaton has 15690 states and 44302 transitions. Word has length 78 [2022-01-18 13:34:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:48,327 INFO L470 AbstractCegarLoop]: Abstraction has 15690 states and 44302 transitions. [2022-01-18 13:34:48,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.0) internal successors, (123), 41 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 15690 states and 44302 transitions. [2022-01-18 13:34:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:48,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:48,346 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:48,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Forceful destruction successful, exit code 0 [2022-01-18 13:34:48,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2022-01-18 13:34:48,559 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1410967389, now seen corresponding path program 203 times [2022-01-18 13:34:48,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:48,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711088697] [2022-01-18 13:34:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:48,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:48,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:48,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711088697] [2022-01-18 13:34:48,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711088697] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:48,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759251664] [2022-01-18 13:34:48,665 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:34:48,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:48,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:48,666 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:48,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2022-01-18 13:34:48,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:34:48,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:34:48,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:34:48,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:34:49,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:34:49,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759251664] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:49,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:49,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:34:49,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732148505] [2022-01-18 13:34:49,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:49,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:34:49,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:49,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:34:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:34:49,277 INFO L87 Difference]: Start difference. First operand 15690 states and 44302 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:53,170 INFO L93 Difference]: Finished difference Result 21714 states and 60856 transitions. [2022-01-18 13:34:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-18 13:34:53,170 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:53,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:53,204 INFO L225 Difference]: With dead ends: 21714 [2022-01-18 13:34:53,204 INFO L226 Difference]: Without dead ends: 21618 [2022-01-18 13:34:53,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11520 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5052, Invalid=26454, Unknown=0, NotChecked=0, Total=31506 [2022-01-18 13:34:53,208 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 883 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:53,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 3784 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:53,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21618 states. [2022-01-18 13:34:53,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21618 to 15482. [2022-01-18 13:34:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15482 states, 15481 states have (on average 2.821652348039532) internal successors, (43682), 15481 states have internal predecessors, (43682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15482 states to 15482 states and 43682 transitions. [2022-01-18 13:34:53,518 INFO L78 Accepts]: Start accepts. Automaton has 15482 states and 43682 transitions. Word has length 78 [2022-01-18 13:34:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:53,518 INFO L470 AbstractCegarLoop]: Abstraction has 15482 states and 43682 transitions. [2022-01-18 13:34:53,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:53,518 INFO L276 IsEmpty]: Start isEmpty. Operand 15482 states and 43682 transitions. [2022-01-18 13:34:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:53,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:53,537 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:53,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Forceful destruction successful, exit code 0 [2022-01-18 13:34:53,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2022-01-18 13:34:53,744 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:53,745 INFO L85 PathProgramCache]: Analyzing trace with hash -712926897, now seen corresponding path program 204 times [2022-01-18 13:34:53,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:53,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365609441] [2022-01-18 13:34:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:53,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:53,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:53,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365609441] [2022-01-18 13:34:53,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365609441] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:53,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191308820] [2022-01-18 13:34:53,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:34:53,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:53,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:53,924 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:53,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2022-01-18 13:34:54,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:34:54,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:34:54,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:34:54,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:34:54,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:34:54,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191308820] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:54,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:54,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:34:54,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462563914] [2022-01-18 13:34:54,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:54,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:34:54,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:54,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:34:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:34:54,615 INFO L87 Difference]: Start difference. First operand 15482 states and 43682 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:57,110 INFO L93 Difference]: Finished difference Result 18660 states and 52291 transitions. [2022-01-18 13:34:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 13:34:57,111 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:34:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:57,146 INFO L225 Difference]: With dead ends: 18660 [2022-01-18 13:34:57,147 INFO L226 Difference]: Without dead ends: 18526 [2022-01-18 13:34:57,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5132 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2618, Invalid=14152, Unknown=0, NotChecked=0, Total=16770 [2022-01-18 13:34:57,149 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 549 mSDsluCounter, 4048 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 4172 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:57,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 4172 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:57,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18526 states. [2022-01-18 13:34:57,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18526 to 15526. [2022-01-18 13:34:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15526 states, 15525 states have (on average 2.817842190016103) internal successors, (43747), 15525 states have internal predecessors, (43747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15526 states to 15526 states and 43747 transitions. [2022-01-18 13:34:57,515 INFO L78 Accepts]: Start accepts. Automaton has 15526 states and 43747 transitions. Word has length 78 [2022-01-18 13:34:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:57,515 INFO L470 AbstractCegarLoop]: Abstraction has 15526 states and 43747 transitions. [2022-01-18 13:34:57,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 15526 states and 43747 transitions. [2022-01-18 13:34:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:34:57,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:57,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:57,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Ended with exit code 0 [2022-01-18 13:34:57,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2022-01-18 13:34:57,751 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash -226430161, now seen corresponding path program 205 times [2022-01-18 13:34:57,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:57,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305002486] [2022-01-18 13:34:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:57,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:57,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:57,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305002486] [2022-01-18 13:34:57,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305002486] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:34:57,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306064576] [2022-01-18 13:34:57,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:34:57,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:34:57,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:34:57,861 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:34:57,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2022-01-18 13:34:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:58,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:34:58,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:34:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:58,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:34:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:58,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306064576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:34:58,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:34:58,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:34:58,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433881399] [2022-01-18 13:34:58,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:34:58,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:34:58,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:34:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1594, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:34:58,822 INFO L87 Difference]: Start difference. First operand 15526 states and 43747 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:05,313 INFO L93 Difference]: Finished difference Result 21893 states and 61094 transitions. [2022-01-18 13:35:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-01-18 13:35:05,313 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:35:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:05,344 INFO L225 Difference]: With dead ends: 21893 [2022-01-18 13:35:05,344 INFO L226 Difference]: Without dead ends: 21787 [2022-01-18 13:35:05,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16587 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=7375, Invalid=36515, Unknown=0, NotChecked=0, Total=43890 [2022-01-18 13:35:05,346 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 814 mSDsluCounter, 4455 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:05,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 4540 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:35:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21787 states. [2022-01-18 13:35:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21787 to 15594. [2022-01-18 13:35:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15594 states, 15593 states have (on average 2.8180593856217535) internal successors, (43942), 15593 states have internal predecessors, (43942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15594 states to 15594 states and 43942 transitions. [2022-01-18 13:35:05,680 INFO L78 Accepts]: Start accepts. Automaton has 15594 states and 43942 transitions. Word has length 78 [2022-01-18 13:35:05,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:05,680 INFO L470 AbstractCegarLoop]: Abstraction has 15594 states and 43942 transitions. [2022-01-18 13:35:05,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:05,680 INFO L276 IsEmpty]: Start isEmpty. Operand 15594 states and 43942 transitions. [2022-01-18 13:35:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:35:05,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:05,695 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:05,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Forceful destruction successful, exit code 0 [2022-01-18 13:35:05,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:05,910 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1513039107, now seen corresponding path program 206 times [2022-01-18 13:35:05,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:05,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445284211] [2022-01-18 13:35:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:05,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:06,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:06,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445284211] [2022-01-18 13:35:06,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445284211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:35:06,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768589364] [2022-01-18 13:35:06,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:35:06,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:06,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:35:06,075 INFO L229 MonitoredProcess]: Starting monitored process 207 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:35:06,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2022-01-18 13:35:06,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:35:06,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:35:06,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:35:06,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:35:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:06,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:35:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:07,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768589364] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:35:07,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:35:07,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:35:07,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745993592] [2022-01-18 13:35:07,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:35:07,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:35:07,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:07,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:35:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:35:07,134 INFO L87 Difference]: Start difference. First operand 15594 states and 43942 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:16,615 INFO L93 Difference]: Finished difference Result 23105 states and 64298 transitions. [2022-01-18 13:35:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2022-01-18 13:35:16,615 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:35:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:16,662 INFO L225 Difference]: With dead ends: 23105 [2022-01-18 13:35:16,663 INFO L226 Difference]: Without dead ends: 22905 [2022-01-18 13:35:16,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24960 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=10137, Invalid=52613, Unknown=0, NotChecked=0, Total=62750 [2022-01-18 13:35:16,668 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 1007 mSDsluCounter, 5399 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 5480 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:16,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 5480 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:35:16,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22905 states. [2022-01-18 13:35:17,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22905 to 15670. [2022-01-18 13:35:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15670 states, 15669 states have (on average 2.8192609611334483) internal successors, (44175), 15669 states have internal predecessors, (44175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15670 states to 15670 states and 44175 transitions. [2022-01-18 13:35:17,145 INFO L78 Accepts]: Start accepts. Automaton has 15670 states and 44175 transitions. Word has length 78 [2022-01-18 13:35:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:17,145 INFO L470 AbstractCegarLoop]: Abstraction has 15670 states and 44175 transitions. [2022-01-18 13:35:17,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 15670 states and 44175 transitions. [2022-01-18 13:35:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:35:17,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:17,170 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:17,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Ended with exit code 0 [2022-01-18 13:35:17,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2022-01-18 13:35:17,376 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:17,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:17,376 INFO L85 PathProgramCache]: Analyzing trace with hash -238873891, now seen corresponding path program 207 times [2022-01-18 13:35:17,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:17,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162750783] [2022-01-18 13:35:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:17,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:17,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:17,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162750783] [2022-01-18 13:35:17,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162750783] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:35:17,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392245388] [2022-01-18 13:35:17,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:35:17,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:17,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:35:17,534 INFO L229 MonitoredProcess]: Starting monitored process 208 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:35:17,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2022-01-18 13:35:17,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:35:17,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:35:17,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:35:17,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:35:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:35:17,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:35:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:35:18,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392245388] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:35:18,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:35:18,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:35:18,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675020098] [2022-01-18 13:35:18,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:35:18,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:35:18,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:18,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:35:18,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1165, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:35:18,241 INFO L87 Difference]: Start difference. First operand 15670 states and 44175 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:21,206 INFO L93 Difference]: Finished difference Result 19544 states and 54882 transitions. [2022-01-18 13:35:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 13:35:21,206 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:35:21,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:21,241 INFO L225 Difference]: With dead ends: 19544 [2022-01-18 13:35:21,241 INFO L226 Difference]: Without dead ends: 19466 [2022-01-18 13:35:21,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4999 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2670, Invalid=13080, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 13:35:21,243 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 463 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:21,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 3718 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:35:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19466 states. [2022-01-18 13:35:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19466 to 15878. [2022-01-18 13:35:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15878 states, 15877 states have (on average 2.8188574667758393) internal successors, (44755), 15877 states have internal predecessors, (44755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 44755 transitions. [2022-01-18 13:35:21,533 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 44755 transitions. Word has length 78 [2022-01-18 13:35:21,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:21,534 INFO L470 AbstractCegarLoop]: Abstraction has 15878 states and 44755 transitions. [2022-01-18 13:35:21,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 44755 transitions. [2022-01-18 13:35:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:35:21,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:21,555 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:21,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Forceful destruction successful, exit code 0 [2022-01-18 13:35:21,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2022-01-18 13:35:21,768 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1504581549, now seen corresponding path program 208 times [2022-01-18 13:35:21,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:21,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071541533] [2022-01-18 13:35:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:21,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:21,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:21,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071541533] [2022-01-18 13:35:21,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071541533] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:35:21,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540902885] [2022-01-18 13:35:21,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:35:21,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:35:21,982 INFO L229 MonitoredProcess]: Starting monitored process 209 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:35:21,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2022-01-18 13:35:22,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:35:22,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:35:22,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 13:35:22,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:35:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:22,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:35:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:23,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540902885] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:35:23,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:35:23,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-01-18 13:35:23,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567475643] [2022-01-18 13:35:23,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:35:23,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 13:35:23,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 13:35:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:35:23,268 INFO L87 Difference]: Start difference. First operand 15878 states and 44755 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:26,213 INFO L93 Difference]: Finished difference Result 23454 states and 65528 transitions. [2022-01-18 13:35:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 13:35:26,213 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:35:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:26,250 INFO L225 Difference]: With dead ends: 23454 [2022-01-18 13:35:26,250 INFO L226 Difference]: Without dead ends: 23331 [2022-01-18 13:35:26,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6418 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2106, Invalid=17916, Unknown=0, NotChecked=0, Total=20022 [2022-01-18 13:35:26,252 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 826 mSDsluCounter, 5331 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:26,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 5380 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:35:26,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23331 states. [2022-01-18 13:35:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23331 to 16138. [2022-01-18 13:35:26,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 16137 states have (on average 2.8186775732788) internal successors, (45485), 16137 states have internal predecessors, (45485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 45485 transitions. [2022-01-18 13:35:26,573 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 45485 transitions. Word has length 78 [2022-01-18 13:35:26,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:26,573 INFO L470 AbstractCegarLoop]: Abstraction has 16138 states and 45485 transitions. [2022-01-18 13:35:26,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 45485 transitions. [2022-01-18 13:35:26,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:35:26,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:26,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:26,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Forceful destruction successful, exit code 0 [2022-01-18 13:35:26,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,209 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:26,808 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:26,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1018084813, now seen corresponding path program 209 times [2022-01-18 13:35:26,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:26,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131449104] [2022-01-18 13:35:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:26,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:26,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131449104] [2022-01-18 13:35:26,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131449104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:35:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804143918] [2022-01-18 13:35:26,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:35:26,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:26,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:35:26,960 INFO L229 MonitoredProcess]: Starting monitored process 210 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:35:26,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2022-01-18 13:35:27,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:35:27,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:35:27,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:35:27,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:35:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:35:27,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:35:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:35:27,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804143918] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:35:27,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:35:27,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-01-18 13:35:27,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523496989] [2022-01-18 13:35:27,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:35:27,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 13:35:27,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:27,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 13:35:27,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:35:27,854 INFO L87 Difference]: Start difference. First operand 16138 states and 45485 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:33,582 INFO L93 Difference]: Finished difference Result 25463 states and 71354 transitions. [2022-01-18 13:35:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-18 13:35:33,582 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:35:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:33,625 INFO L225 Difference]: With dead ends: 25463 [2022-01-18 13:35:33,625 INFO L226 Difference]: Without dead ends: 25337 [2022-01-18 13:35:33,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13788 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5488, Invalid=31568, Unknown=0, NotChecked=0, Total=37056 [2022-01-18 13:35:33,628 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 749 mSDsluCounter, 5091 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:33,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 5177 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:35:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25337 states. [2022-01-18 13:35:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25337 to 16894. [2022-01-18 13:35:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16894 states, 16893 states have (on average 2.8350204226602735) internal successors, (47892), 16893 states have internal predecessors, (47892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16894 states to 16894 states and 47892 transitions. [2022-01-18 13:35:33,938 INFO L78 Accepts]: Start accepts. Automaton has 16894 states and 47892 transitions. Word has length 78 [2022-01-18 13:35:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:33,939 INFO L470 AbstractCegarLoop]: Abstraction has 16894 states and 47892 transitions. [2022-01-18 13:35:33,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 16894 states and 47892 transitions. [2022-01-18 13:35:33,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:35:33,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:33,960 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:33,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Forceful destruction successful, exit code 0 [2022-01-18 13:35:34,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:34,168 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:34,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1191660701, now seen corresponding path program 210 times [2022-01-18 13:35:34,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:34,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853183794] [2022-01-18 13:35:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:34,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:34,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:34,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853183794] [2022-01-18 13:35:34,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853183794] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:35:34,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716504978] [2022-01-18 13:35:34,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:35:34,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:34,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:35:34,331 INFO L229 MonitoredProcess]: Starting monitored process 211 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:35:34,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2022-01-18 13:35:34,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:35:34,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:35:34,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:35:34,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:35:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:34,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:35:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:35,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716504978] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:35:35,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:35:35,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:35:35,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529581354] [2022-01-18 13:35:35,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:35:35,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:35:35,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:35,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:35:35,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1606, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:35:35,319 INFO L87 Difference]: Start difference. First operand 16894 states and 47892 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:43,483 INFO L93 Difference]: Finished difference Result 25048 states and 70041 transitions. [2022-01-18 13:35:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2022-01-18 13:35:43,483 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:35:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:43,523 INFO L225 Difference]: With dead ends: 25048 [2022-01-18 13:35:43,523 INFO L226 Difference]: Without dead ends: 24967 [2022-01-18 13:35:43,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24561 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=10098, Invalid=53154, Unknown=0, NotChecked=0, Total=63252 [2022-01-18 13:35:43,528 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1028 mSDsluCounter, 4948 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 4999 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:43,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 4999 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:35:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24967 states. [2022-01-18 13:35:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24967 to 16874. [2022-01-18 13:35:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16874 states, 16873 states have (on average 2.8358323949505126) internal successors, (47849), 16873 states have internal predecessors, (47849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16874 states to 16874 states and 47849 transitions. [2022-01-18 13:35:43,834 INFO L78 Accepts]: Start accepts. Automaton has 16874 states and 47849 transitions. Word has length 78 [2022-01-18 13:35:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:43,834 INFO L470 AbstractCegarLoop]: Abstraction has 16874 states and 47849 transitions. [2022-01-18 13:35:43,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 16874 states and 47849 transitions. [2022-01-18 13:35:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:35:43,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:43,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:43,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Forceful destruction successful, exit code 0 [2022-01-18 13:35:44,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable242 [2022-01-18 13:35:44,071 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:44,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1678157437, now seen corresponding path program 211 times [2022-01-18 13:35:44,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:44,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249084893] [2022-01-18 13:35:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:44,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:44,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249084893] [2022-01-18 13:35:44,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249084893] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:35:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035822387] [2022-01-18 13:35:44,256 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:35:44,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:44,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:35:44,257 INFO L229 MonitoredProcess]: Starting monitored process 212 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:35:44,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2022-01-18 13:35:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:44,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:35:44,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:35:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:44,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:35:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:45,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035822387] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:35:45,323 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:35:45,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:35:45,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871900204] [2022-01-18 13:35:45,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:35:45,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:35:45,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:35:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:35:45,324 INFO L87 Difference]: Start difference. First operand 16874 states and 47849 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:53,288 INFO L93 Difference]: Finished difference Result 26313 states and 73626 transitions. [2022-01-18 13:35:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-01-18 13:35:53,288 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:35:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:53,331 INFO L225 Difference]: With dead ends: 26313 [2022-01-18 13:35:53,331 INFO L226 Difference]: Without dead ends: 26217 [2022-01-18 13:35:53,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21930 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=9767, Invalid=46165, Unknown=0, NotChecked=0, Total=55932 [2022-01-18 13:35:53,334 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1032 mSDsluCounter, 4984 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 5051 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:53,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 5051 Invalid, 3031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:35:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26217 states. [2022-01-18 13:35:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26217 to 16770. [2022-01-18 13:35:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16770 states, 16769 states have (on average 2.8339793666885322) internal successors, (47523), 16769 states have internal predecessors, (47523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16770 states to 16770 states and 47523 transitions. [2022-01-18 13:35:53,640 INFO L78 Accepts]: Start accepts. Automaton has 16770 states and 47523 transitions. Word has length 78 [2022-01-18 13:35:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:53,640 INFO L470 AbstractCegarLoop]: Abstraction has 16770 states and 47523 transitions. [2022-01-18 13:35:53,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:53,640 INFO L276 IsEmpty]: Start isEmpty. Operand 16770 states and 47523 transitions. [2022-01-18 13:35:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:35:53,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:53,660 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:53,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Forceful destruction successful, exit code 0 [2022-01-18 13:35:53,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243,212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:53,874 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:53,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:53,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1359944535, now seen corresponding path program 212 times [2022-01-18 13:35:53,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:53,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257681951] [2022-01-18 13:35:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:53,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:54,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:54,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257681951] [2022-01-18 13:35:54,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257681951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:35:54,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817655972] [2022-01-18 13:35:54,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:35:54,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:35:54,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:35:54,050 INFO L229 MonitoredProcess]: Starting monitored process 213 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:35:54,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2022-01-18 13:35:54,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:35:54,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:35:54,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:35:54,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:35:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:54,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:35:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:55,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817655972] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:35:55,331 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:35:55,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:35:55,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523994947] [2022-01-18 13:35:55,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:35:55,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:35:55,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:35:55,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:35:55,332 INFO L87 Difference]: Start difference. First operand 16770 states and 47523 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:00,128 INFO L93 Difference]: Finished difference Result 21892 states and 61546 transitions. [2022-01-18 13:36:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-18 13:36:00,129 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:36:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:00,166 INFO L225 Difference]: With dead ends: 21892 [2022-01-18 13:36:00,166 INFO L226 Difference]: Without dead ends: 21790 [2022-01-18 13:36:00,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8329 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3812, Invalid=21310, Unknown=0, NotChecked=0, Total=25122 [2022-01-18 13:36:00,168 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 636 mSDsluCounter, 5301 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 5386 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:00,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 5386 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:36:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21790 states. [2022-01-18 13:36:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21790 to 16782. [2022-01-18 13:36:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 2.832965854239914) internal successors, (47540), 16781 states have internal predecessors, (47540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 47540 transitions. [2022-01-18 13:36:00,440 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 47540 transitions. Word has length 78 [2022-01-18 13:36:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:00,440 INFO L470 AbstractCegarLoop]: Abstraction has 16782 states and 47540 transitions. [2022-01-18 13:36:00,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 47540 transitions. [2022-01-18 13:36:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:36:00,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:00,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:00,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Forceful destruction successful, exit code 0 [2022-01-18 13:36:00,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2022-01-18 13:36:00,676 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:00,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:00,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1846441271, now seen corresponding path program 213 times [2022-01-18 13:36:00,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:00,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653575475] [2022-01-18 13:36:00,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:00,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:00,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:00,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653575475] [2022-01-18 13:36:00,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653575475] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:36:00,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906423715] [2022-01-18 13:36:00,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:36:00,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:36:00,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:36:00,800 INFO L229 MonitoredProcess]: Starting monitored process 214 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:36:00,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2022-01-18 13:36:00,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:36:00,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:36:00,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:36:00,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:36:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:01,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:36:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:01,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906423715] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:36:01,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:36:01,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:36:01,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997624847] [2022-01-18 13:36:01,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:36:01,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:36:01,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:36:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:36:01,854 INFO L87 Difference]: Start difference. First operand 16782 states and 47540 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:07,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:07,210 INFO L93 Difference]: Finished difference Result 23927 states and 67109 transitions. [2022-01-18 13:36:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-18 13:36:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:36:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:07,248 INFO L225 Difference]: With dead ends: 23927 [2022-01-18 13:36:07,248 INFO L226 Difference]: Without dead ends: 23813 [2022-01-18 13:36:07,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12109 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5730, Invalid=28310, Unknown=0, NotChecked=0, Total=34040 [2022-01-18 13:36:07,251 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 794 mSDsluCounter, 4996 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 5090 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:07,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 5090 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:36:07,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23813 states. [2022-01-18 13:36:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23813 to 16970. [2022-01-18 13:36:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16970 states, 16969 states have (on average 2.8320466733455123) internal successors, (48057), 16969 states have internal predecessors, (48057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16970 states to 16970 states and 48057 transitions. [2022-01-18 13:36:07,550 INFO L78 Accepts]: Start accepts. Automaton has 16970 states and 48057 transitions. Word has length 78 [2022-01-18 13:36:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:07,550 INFO L470 AbstractCegarLoop]: Abstraction has 16970 states and 48057 transitions. [2022-01-18 13:36:07,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16970 states and 48057 transitions. [2022-01-18 13:36:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:36:07,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:07,570 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:07,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Forceful destruction successful, exit code 0 [2022-01-18 13:36:07,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2022-01-18 13:36:07,787 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:07,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:07,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1833997541, now seen corresponding path program 214 times [2022-01-18 13:36:07,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:07,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918648166] [2022-01-18 13:36:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:07,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:07,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:07,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918648166] [2022-01-18 13:36:07,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918648166] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:36:07,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077705747] [2022-01-18 13:36:07,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:36:07,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:36:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:36:08,000 INFO L229 MonitoredProcess]: Starting monitored process 215 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:36:08,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2022-01-18 13:36:08,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:36:08,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:36:08,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 13:36:08,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:36:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:08,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:36:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:09,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077705747] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:36:09,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:36:09,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-01-18 13:36:09,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162898441] [2022-01-18 13:36:09,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:36:09,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 13:36:09,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 13:36:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:36:09,150 INFO L87 Difference]: Start difference. First operand 16970 states and 48057 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:14,448 INFO L93 Difference]: Finished difference Result 26896 states and 75362 transitions. [2022-01-18 13:36:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-18 13:36:14,449 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:36:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:14,493 INFO L225 Difference]: With dead ends: 26896 [2022-01-18 13:36:14,493 INFO L226 Difference]: Without dead ends: 26810 [2022-01-18 13:36:14,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13622 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4123, Invalid=33707, Unknown=0, NotChecked=0, Total=37830 [2022-01-18 13:36:14,496 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 972 mSDsluCounter, 6013 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 6125 SdHoareTripleChecker+Invalid, 3878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:14,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 6125 Invalid, 3878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 3681 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:36:14,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26810 states. [2022-01-18 13:36:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26810 to 16982. [2022-01-18 13:36:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16982 states, 16981 states have (on average 2.8319886932453917) internal successors, (48090), 16981 states have internal predecessors, (48090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16982 states to 16982 states and 48090 transitions. [2022-01-18 13:36:14,817 INFO L78 Accepts]: Start accepts. Automaton has 16982 states and 48090 transitions. Word has length 78 [2022-01-18 13:36:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:14,817 INFO L470 AbstractCegarLoop]: Abstraction has 16982 states and 48090 transitions. [2022-01-18 13:36:14,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 16982 states and 48090 transitions. [2022-01-18 13:36:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:36:14,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:14,837 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:14,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Forceful destruction successful, exit code 0 [2022-01-18 13:36:15,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2022-01-18 13:36:15,053 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash -298170925, now seen corresponding path program 215 times [2022-01-18 13:36:15,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:15,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699261139] [2022-01-18 13:36:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:15,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:15,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:15,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699261139] [2022-01-18 13:36:15,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699261139] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:36:15,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147102490] [2022-01-18 13:36:15,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:36:15,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:36:15,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:36:15,169 INFO L229 MonitoredProcess]: Starting monitored process 216 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:36:15,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2022-01-18 13:36:15,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:36:15,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:36:15,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:36:15,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:36:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:15,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:36:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:16,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147102490] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:36:16,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:36:16,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:36:16,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91282121] [2022-01-18 13:36:16,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:36:16,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:36:16,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:36:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:36:16,059 INFO L87 Difference]: Start difference. First operand 16982 states and 48090 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:22,068 INFO L93 Difference]: Finished difference Result 24307 states and 68022 transitions. [2022-01-18 13:36:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-01-18 13:36:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:36:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:22,108 INFO L225 Difference]: With dead ends: 24307 [2022-01-18 13:36:22,108 INFO L226 Difference]: Without dead ends: 24205 [2022-01-18 13:36:22,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14306 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=6487, Invalid=33313, Unknown=0, NotChecked=0, Total=39800 [2022-01-18 13:36:22,112 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 933 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4829 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:22,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 4829 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:36:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24205 states. [2022-01-18 13:36:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24205 to 17098. [2022-01-18 13:36:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17098 states, 17097 states have (on average 2.8326022109141955) internal successors, (48429), 17097 states have internal predecessors, (48429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17098 states to 17098 states and 48429 transitions. [2022-01-18 13:36:22,427 INFO L78 Accepts]: Start accepts. Automaton has 17098 states and 48429 transitions. Word has length 78 [2022-01-18 13:36:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:22,427 INFO L470 AbstractCegarLoop]: Abstraction has 17098 states and 48429 transitions. [2022-01-18 13:36:22,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 17098 states and 48429 transitions. [2022-01-18 13:36:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:36:22,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:22,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:22,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Forceful destruction successful, exit code 0 [2022-01-18 13:36:22,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:36:22,650 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 188325811, now seen corresponding path program 216 times [2022-01-18 13:36:22,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:22,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676042278] [2022-01-18 13:36:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:22,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:22,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:22,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676042278] [2022-01-18 13:36:22,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676042278] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:36:22,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423610390] [2022-01-18 13:36:22,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:36:22,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:36:22,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:36:22,764 INFO L229 MonitoredProcess]: Starting monitored process 217 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:36:22,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2022-01-18 13:36:22,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:36:22,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:36:22,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:36:22,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:36:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:23,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:36:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:23,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423610390] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:36:23,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:36:23,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:36:23,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252770999] [2022-01-18 13:36:23,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:36:23,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:36:23,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:36:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:36:23,685 INFO L87 Difference]: Start difference. First operand 17098 states and 48429 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:29,889 INFO L93 Difference]: Finished difference Result 25786 states and 72199 transitions. [2022-01-18 13:36:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-01-18 13:36:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:36:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:29,932 INFO L225 Difference]: With dead ends: 25786 [2022-01-18 13:36:29,932 INFO L226 Difference]: Without dead ends: 25692 [2022-01-18 13:36:29,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17386 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7992, Invalid=38018, Unknown=0, NotChecked=0, Total=46010 [2022-01-18 13:36:29,936 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 971 mSDsluCounter, 4503 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 4584 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:29,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 4584 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2626 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:36:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25692 states. [2022-01-18 13:36:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25692 to 16962. [2022-01-18 13:36:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16962 states, 16961 states have (on average 2.833972053534579) internal successors, (48067), 16961 states have internal predecessors, (48067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16962 states to 16962 states and 48067 transitions. [2022-01-18 13:36:30,253 INFO L78 Accepts]: Start accepts. Automaton has 16962 states and 48067 transitions. Word has length 78 [2022-01-18 13:36:30,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:30,253 INFO L470 AbstractCegarLoop]: Abstraction has 16962 states and 48067 transitions. [2022-01-18 13:36:30,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 16962 states and 48067 transitions. [2022-01-18 13:36:30,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:36:30,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:30,273 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:30,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Ended with exit code 0 [2022-01-18 13:36:30,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable248 [2022-01-18 13:36:30,489 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:30,489 INFO L85 PathProgramCache]: Analyzing trace with hash 175882081, now seen corresponding path program 217 times [2022-01-18 13:36:30,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:30,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797074402] [2022-01-18 13:36:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:30,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:30,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:30,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797074402] [2022-01-18 13:36:30,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797074402] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:36:30,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108142060] [2022-01-18 13:36:30,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:36:30,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:36:30,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:36:30,603 INFO L229 MonitoredProcess]: Starting monitored process 218 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:36:30,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2022-01-18 13:36:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:30,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:36:30,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:36:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:31,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:36:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:31,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108142060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:36:31,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:36:31,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:36:31,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687858808] [2022-01-18 13:36:31,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:36:31,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:36:31,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:36:31,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:36:31,568 INFO L87 Difference]: Start difference. First operand 16962 states and 48067 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:36,806 INFO L93 Difference]: Finished difference Result 25038 states and 70026 transitions. [2022-01-18 13:36:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 13:36:36,806 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 13:36:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:36,850 INFO L225 Difference]: With dead ends: 25038 [2022-01-18 13:36:36,850 INFO L226 Difference]: Without dead ends: 24956 [2022-01-18 13:36:36,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12697 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5964, Invalid=29568, Unknown=0, NotChecked=0, Total=35532 [2022-01-18 13:36:36,854 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 951 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 4914 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:36,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 4914 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:36:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24956 states. [2022-01-18 13:36:37,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24956 to 17410. [2022-01-18 13:36:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17410 states, 17409 states have (on average 2.830662301108622) internal successors, (49279), 17409 states have internal predecessors, (49279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17410 states to 17410 states and 49279 transitions. [2022-01-18 13:36:37,168 INFO L78 Accepts]: Start accepts. Automaton has 17410 states and 49279 transitions. Word has length 78 [2022-01-18 13:36:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:37,168 INFO L470 AbstractCegarLoop]: Abstraction has 17410 states and 49279 transitions. [2022-01-18 13:36:37,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 17410 states and 49279 transitions. [2022-01-18 13:36:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 13:36:37,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:37,189 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:37,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Forceful destruction successful, exit code 0 [2022-01-18 13:36:37,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2022-01-18 13:36:37,395 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1819426219, now seen corresponding path program 218 times [2022-01-18 13:36:37,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:37,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032897220] [2022-01-18 13:36:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:37,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:37,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:37,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032897220] [2022-01-18 13:36:37,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032897220] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:36:37,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501954895] [2022-01-18 13:36:37,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:36:37,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:36:37,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:36:37,575 INFO L229 MonitoredProcess]: Starting monitored process 219 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:36:37,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2022-01-18 13:36:37,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:36:37,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:36:37,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 13:36:37,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:36:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:38,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:36:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:38,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501954895] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:36:38,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:36:38,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-01-18 13:36:38,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444211482] [2022-01-18 13:36:38,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:36:38,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 13:36:38,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 13:36:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1574, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:36:38,686 INFO L87 Difference]: Start difference. First operand 17410 states and 49279 transitions. Second operand has 43 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 43 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 13:36:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 13:36:40,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4181 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2228, Invalid=11344, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 13:36:40,976 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 542 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:40,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 4307 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:36:40,977 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 13:36:40,990 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 13:36:40,992 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 13:36:40,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Forceful destruction successful, exit code 0 [2022-01-18 13:36:41,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,219 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:36:41,186 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (17410states) and FLOYD_HOARE automaton (currently 81 states, 43 states before enhancement),while ReachableStatesComputation was computing reachable states (20247 states constructed, input type IntersectNwa). [2022-01-18 13:36:41,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 13:36:41,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 13:36:41,190 INFO L732 BasicCegarLoop]: Path program histogram: [218, 20, 6, 6, 1] [2022-01-18 13:36:41,191 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:36:41,191 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:36:41,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:36:41 BasicIcfg [2022-01-18 13:36:41,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:36:41,202 INFO L158 Benchmark]: Toolchain (without parser) took 912484.91ms. Allocated memory was 335.5MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 280.5MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 512.5MB. Max. memory is 16.0GB. [2022-01-18 13:36:41,202 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory was 296.7MB in the beginning and 296.6MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:36:41,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.37ms. Allocated memory is still 335.5MB. Free memory was 280.3MB in the beginning and 307.1MB in the end (delta: -26.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.0GB. [2022-01-18 13:36:41,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.63ms. Allocated memory is still 335.5MB. Free memory was 307.1MB in the beginning and 305.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:36:41,202 INFO L158 Benchmark]: Boogie Preprocessor took 25.63ms. Allocated memory is still 335.5MB. Free memory was 305.0MB in the beginning and 303.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:36:41,202 INFO L158 Benchmark]: RCFGBuilder took 346.43ms. Allocated memory is still 335.5MB. Free memory was 303.9MB in the beginning and 291.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 13:36:41,202 INFO L158 Benchmark]: TraceAbstraction took 911871.90ms. Allocated memory was 335.5MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 290.3MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 522.3MB. Max. memory is 16.0GB. [2022-01-18 13:36:41,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory was 296.7MB in the beginning and 296.6MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 203.37ms. Allocated memory is still 335.5MB. Free memory was 280.3MB in the beginning and 307.1MB in the end (delta: -26.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.63ms. Allocated memory is still 335.5MB. Free memory was 307.1MB in the beginning and 305.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 25.63ms. Allocated memory is still 335.5MB. Free memory was 305.0MB in the beginning and 303.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 346.43ms. Allocated memory is still 335.5MB. Free memory was 303.9MB in the beginning and 291.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 911871.90ms. Allocated memory was 335.5MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 290.3MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 522.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (17410states) and FLOYD_HOARE automaton (currently 81 states, 43 states before enhancement),while ReachableStatesComputation was computing reachable states (20247 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17410states) and FLOYD_HOARE automaton (currently 81 states, 43 states before enhancement),while ReachableStatesComputation was computing reachable states (20247 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17410states) and FLOYD_HOARE automaton (currently 81 states, 43 states before enhancement),while ReachableStatesComputation was computing reachable states (20247 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 911.8s, OverallIterations: 251, TraceHistogramMax: 2, PathProgramHistogramMax: 218, EmptinessCheckTime: 2.5s, AutomataDifference: 618.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148457 SdHoareTripleChecker+Valid, 114.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148457 mSDsluCounter, 705058 SdHoareTripleChecker+Invalid, 97.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 692844 mSDsCounter, 24059 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 355903 IncrementalHoareTripleChecker+Invalid, 379962 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24059 mSolverCounterUnsat, 40202 mSDtfsCounter, 355903 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53772 GetRequests, 26841 SyntacticMatches, 847 SemanticMatches, 26084 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315719 ImplicationChecksByTransitivity, 549.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17410occurred in iteration=250, InterpolantAutomatonStates: 21318, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 35.9s AutomataMinimizationTime, 250 MinimizatonAttempts, 836182 StatesRemovedByMinimization, 249 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 179.3s InterpolantComputationTime, 33766 NumberOfCodeBlocks, 33739 NumberOfCodeBlocksAsserted, 733 NumberOfCheckSat, 48708 ConstructedInterpolants, 0 QuantifiedInterpolants, 299107 SizeOfPredicates, 2348 NumberOfNonLiveVariables, 34830 ConjunctsInSsa, 4508 ConjunctsInUnsatCore, 684 InterpolantComputations, 36 PerfectInterpolantSequences, 323/3474 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown