/usr/bin/java -Xmx8000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 22:41:20,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 22:41:20,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 22:41:20,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 22:41:20,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 22:41:20,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 22:41:20,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 22:41:21,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 22:41:21,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 22:41:21,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 22:41:21,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 22:41:21,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 22:41:21,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 22:41:21,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 22:41:21,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 22:41:21,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 22:41:21,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 22:41:21,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 22:41:21,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 22:41:21,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 22:41:21,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 22:41:21,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 22:41:21,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 22:41:21,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 22:41:21,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-10 22:41:21,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-10 22:41:21,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-10 22:41:21,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-10 22:41:21,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-10 22:41:21,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-10 22:41:21,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-10 22:41:21,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-10 22:41:21,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-10 22:41:21,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-10 22:41:21,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-10 22:41:21,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-10 22:41:21,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-10 22:41:21,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-10 22:41:21,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 22:41:21,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 22:41:21,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 22:41:21,031 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.epf [2022-02-10 22:41:21,054 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 22:41:21,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 22:41:21,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 22:41:21,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 22:41:21,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 22:41:21,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 22:41:21,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 22:41:21,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 22:41:21,056 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 22:41:21,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 22:41:21,056 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 22:41:21,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 22:41:21,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 22:41:21,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 22:41:21,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 22:41:21,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:41:21,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 22:41:21,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 22:41:21,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 22:41:21,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 22:41:21,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 22:41:21,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 22:41:21,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 22:41:21,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 22:41:21,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 22:41:21,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 22:41:21,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 22:41:21,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 22:41:21,285 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 22:41:21,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-02-10 22:41:21,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726654348/0fcce65e9d6f4fcabfe9ebe82b7c1e8c/FLAG718c11363 [2022-02-10 22:41:21,714 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 22:41:21,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-02-10 22:41:21,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726654348/0fcce65e9d6f4fcabfe9ebe82b7c1e8c/FLAG718c11363 [2022-02-10 22:41:21,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726654348/0fcce65e9d6f4fcabfe9ebe82b7c1e8c [2022-02-10 22:41:21,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 22:41:21,743 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 22:41:21,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 22:41:21,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 22:41:21,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 22:41:21,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:21,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193aca08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21, skipping insertion in model container [2022-02-10 22:41:21,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:21,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 22:41:21,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 22:41:21,936 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/popl20-channel-sum.wvr.c[2947,2960] [2022-02-10 22:41:21,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:41:21,955 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 22:41:21,985 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/popl20-channel-sum.wvr.c[2947,2960] [2022-02-10 22:41:21,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:41:21,997 INFO L208 MainTranslator]: Completed translation [2022-02-10 22:41:21,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21 WrapperNode [2022-02-10 22:41:21,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 22:41:21,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 22:41:21,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 22:41:21,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 22:41:22,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,045 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2022-02-10 22:41:22,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 22:41:22,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 22:41:22,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 22:41:22,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 22:41:22,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 22:41:22,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 22:41:22,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 22:41:22,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 22:41:22,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (1/1) ... [2022-02-10 22:41:22,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:41:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:41:22,099 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) [2022-02-10 22:41:22,110 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 [2022-02-10 22:41:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 22:41:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 22:41:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 22:41:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 22:41:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 22:41:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 22:41:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 22:41:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 22:41:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 22:41:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 22:41:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-10 22:41:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 22:41:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 22:41:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 22:41:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 22:41:22,132 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 22:41:22,238 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 22:41:22,239 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 22:41:22,469 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 22:41:22,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 22:41:22,517 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-10 22:41:22,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:41:22 BoogieIcfgContainer [2022-02-10 22:41:22,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 22:41:22,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 22:41:22,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 22:41:22,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 22:41:22,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:41:21" (1/3) ... [2022-02-10 22:41:22,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dea976c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:41:22, skipping insertion in model container [2022-02-10 22:41:22,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:41:21" (2/3) ... [2022-02-10 22:41:22,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dea976c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:41:22, skipping insertion in model container [2022-02-10 22:41:22,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:41:22" (3/3) ... [2022-02-10 22:41:22,526 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2022-02-10 22:41:22,534 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 22:41:22,534 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 22:41:22,534 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 22:41:22,534 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 22:41:22,576 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,577 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,577 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,578 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,578 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,578 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,578 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,578 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,578 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,578 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,578 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,579 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,579 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,579 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,579 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,579 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,579 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,579 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,580 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,580 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,580 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,580 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,581 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,581 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,581 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,581 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,582 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,582 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,582 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,582 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,583 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,583 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,584 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,584 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,584 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,585 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,586 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,586 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,586 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,586 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,587 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,587 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,587 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,588 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,589 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,589 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,589 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,589 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,589 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,589 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,590 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,590 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,590 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,591 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,591 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,591 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,591 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,591 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,591 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,591 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,592 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,592 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,592 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,592 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,592 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,592 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,592 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,592 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,593 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,593 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,596 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,596 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,596 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,596 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,597 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,597 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,598 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,599 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,599 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,600 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,600 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,602 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,606 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,606 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,606 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,606 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,606 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:41:22,611 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 22:41:22,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 22:41:22,649 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 [2022-02-10 22:41:22,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 22:41:22,661 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 138 places, 142 transitions, 300 flow [2022-02-10 22:41:22,738 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-10 22:41:22,763 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:22,764 INFO L515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:22,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:22,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash 183716022, now seen corresponding path program 1 times [2022-02-10 22:41:22,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:22,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831027452] [2022-02-10 22:41:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:22,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:22,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:22,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831027452] [2022-02-10 22:41:22,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831027452] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:41:22,981 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:41:22,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 22:41:22,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609251360] [2022-02-10 22:41:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:41:22,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 22:41:22,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:23,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 22:41:23,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:41:23,008 INFO L87 Difference]: Start difference. First operand has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 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 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:23,044 INFO L93 Difference]: Finished difference Result 1358 states and 3564 transitions. [2022-02-10 22:41:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 22:41:23,045 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-02-10 22:41:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:23,069 INFO L225 Difference]: With dead ends: 1358 [2022-02-10 22:41:23,069 INFO L226 Difference]: Without dead ends: 1293 [2022-02-10 22:41:23,070 INFO L933 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 [2022-02-10 22:41:23,072 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:23,073 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:41:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-02-10 22:41:23,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1293. [2022-02-10 22:41:23,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.624613003095975) internal successors, (3391), 1292 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3391 transitions. [2022-02-10 22:41:23,171 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3391 transitions. Word has length 87 [2022-02-10 22:41:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:23,172 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 3391 transitions. [2022-02-10 22:41:23,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3391 transitions. [2022-02-10 22:41:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-10 22:41:23,176 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:23,176 INFO L515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:23,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 22:41:23,176 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:23,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash 611453624, now seen corresponding path program 1 times [2022-02-10 22:41:23,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:23,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085067790] [2022-02-10 22:41:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:23,325 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:23,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085067790] [2022-02-10 22:41:23,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085067790] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:41:23,325 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:41:23,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:41:23,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304924840] [2022-02-10 22:41:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:41:23,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:41:23,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:23,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:41:23,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:41:23,329 INFO L87 Difference]: Start difference. First operand 1293 states and 3391 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2022-02-10 22:41:23,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:23,418 INFO L93 Difference]: Finished difference Result 2395 states and 6374 transitions. [2022-02-10 22:41:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:41:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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 88 [2022-02-10 22:41:23,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:23,429 INFO L225 Difference]: With dead ends: 2395 [2022-02-10 22:41:23,429 INFO L226 Difference]: Without dead ends: 2161 [2022-02-10 22:41:23,432 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:41:23,433 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 34 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:23,434 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 368 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:41:23,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2022-02-10 22:41:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1355. [2022-02-10 22:41:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 2.6299852289512557) internal successors, (3561), 1354 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3561 transitions. [2022-02-10 22:41:23,479 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3561 transitions. Word has length 88 [2022-02-10 22:41:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:23,481 INFO L470 AbstractCegarLoop]: Abstraction has 1355 states and 3561 transitions. [2022-02-10 22:41:23,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2022-02-10 22:41:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3561 transitions. [2022-02-10 22:41:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-10 22:41:23,486 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:23,486 INFO L515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:23,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 22:41:23,486 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash 423797772, now seen corresponding path program 1 times [2022-02-10 22:41:23,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:23,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026375257] [2022-02-10 22:41:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:23,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:23,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026375257] [2022-02-10 22:41:23,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026375257] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:41:23,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:41:23,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 22:41:23,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795580568] [2022-02-10 22:41:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:41:23,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:41:23,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:23,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:41:23,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:41:23,610 INFO L87 Difference]: Start difference. First operand 1355 states and 3561 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2022-02-10 22:41:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:23,645 INFO L93 Difference]: Finished difference Result 1268 states and 3355 transitions. [2022-02-10 22:41:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:41:23,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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 103 [2022-02-10 22:41:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:23,654 INFO L225 Difference]: With dead ends: 1268 [2022-02-10 22:41:23,654 INFO L226 Difference]: Without dead ends: 1236 [2022-02-10 22:41:23,654 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:41:23,659 INFO L934 BasicCegarLoop]: 127 mSDtfsCounter, 50 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:23,660 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 239 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:41:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2022-02-10 22:41:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2022-02-10 22:41:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 2.6582995951417003) internal successors, (3283), 1235 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3283 transitions. [2022-02-10 22:41:23,682 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3283 transitions. Word has length 103 [2022-02-10 22:41:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:23,687 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 3283 transitions. [2022-02-10 22:41:23,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2022-02-10 22:41:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3283 transitions. [2022-02-10 22:41:23,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-10 22:41:23,691 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:23,691 INFO L515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:23,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 22:41:23,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash -636542678, now seen corresponding path program 1 times [2022-02-10 22:41:23,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:23,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35497759] [2022-02-10 22:41:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:41:23,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:23,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35497759] [2022-02-10 22:41:23,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35497759] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:41:23,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:41:23,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 22:41:23,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089738724] [2022-02-10 22:41:23,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:41:23,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 22:41:23,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 22:41:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:41:23,774 INFO L87 Difference]: Start difference. First operand 1236 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2022-02-10 22:41:23,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:23,799 INFO L93 Difference]: Finished difference Result 1303 states and 3465 transitions. [2022-02-10 22:41:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 22:41:23,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 110 [2022-02-10 22:41:23,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:23,805 INFO L225 Difference]: With dead ends: 1303 [2022-02-10 22:41:23,805 INFO L226 Difference]: Without dead ends: 1303 [2022-02-10 22:41:23,805 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 22:41:23,810 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 26 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:23,811 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 220 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:41:23,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-02-10 22:41:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1220. [2022-02-10 22:41:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 2.657095980311731) internal successors, (3239), 1219 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 3239 transitions. [2022-02-10 22:41:23,866 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 3239 transitions. Word has length 110 [2022-02-10 22:41:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:23,866 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 3239 transitions. [2022-02-10 22:41:23,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2022-02-10 22:41:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 3239 transitions. [2022-02-10 22:41:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-10 22:41:23,872 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:23,872 INFO L515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:23,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 22:41:23,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1676428855, now seen corresponding path program 1 times [2022-02-10 22:41:23,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:23,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078320527] [2022-02-10 22:41:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:24,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:24,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078320527] [2022-02-10 22:41:24,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078320527] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:41:24,024 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:41:24,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:41:24,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917306011] [2022-02-10 22:41:24,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:41:24,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:41:24,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:41:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:41:24,025 INFO L87 Difference]: Start difference. First operand 1220 states and 3239 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 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) [2022-02-10 22:41:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:24,066 INFO L93 Difference]: Finished difference Result 1272 states and 3334 transitions. [2022-02-10 22:41:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:41:24,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 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 110 [2022-02-10 22:41:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:24,070 INFO L225 Difference]: With dead ends: 1272 [2022-02-10 22:41:24,070 INFO L226 Difference]: Without dead ends: 1186 [2022-02-10 22:41:24,071 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:41:24,071 INFO L934 BasicCegarLoop]: 128 mSDtfsCounter, 70 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:24,071 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 314 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:41:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-02-10 22:41:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2022-02-10 22:41:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 2.6582278481012658) internal successors, (3150), 1185 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:24,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 3150 transitions. [2022-02-10 22:41:24,092 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 3150 transitions. Word has length 110 [2022-02-10 22:41:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:24,093 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 3150 transitions. [2022-02-10 22:41:24,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 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) [2022-02-10 22:41:24,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 3150 transitions. [2022-02-10 22:41:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-10 22:41:24,095 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:24,095 INFO L515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 22:41:24,096 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:24,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1618078681, now seen corresponding path program 2 times [2022-02-10 22:41:24,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:24,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871760771] [2022-02-10 22:41:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:24,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:24,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:24,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871760771] [2022-02-10 22:41:24,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871760771] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:41:24,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966190912] [2022-02-10 22:41:24,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:41:24,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:41:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:41:24,220 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) [2022-02-10 22:41:24,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 22:41:24,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:41:24,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:41:24,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:41:24,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:41:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:24,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:41:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:24,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966190912] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:41:24,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:41:24,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-02-10 22:41:24,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366905166] [2022-02-10 22:41:24,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:41:24,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:41:24,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:41:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:41:24,787 INFO L87 Difference]: Start difference. First operand 1186 states and 3150 transitions. Second operand has 17 states, 17 states have (on average 10.941176470588236) internal successors, (186), 17 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:25,035 INFO L93 Difference]: Finished difference Result 1795 states and 4813 transitions. [2022-02-10 22:41:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:41:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.941176470588236) internal successors, (186), 17 states have internal predecessors, (186), 0 states have call successors, (0), 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 110 [2022-02-10 22:41:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:25,042 INFO L225 Difference]: With dead ends: 1795 [2022-02-10 22:41:25,042 INFO L226 Difference]: Without dead ends: 1764 [2022-02-10 22:41:25,042 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2022-02-10 22:41:25,043 INFO L934 BasicCegarLoop]: 99 mSDtfsCounter, 812 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:25,043 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 849 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:41:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-02-10 22:41:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1187. [2022-02-10 22:41:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.6568296795952784) internal successors, (3151), 1186 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 3151 transitions. [2022-02-10 22:41:25,067 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 3151 transitions. Word has length 110 [2022-02-10 22:41:25,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:25,068 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 3151 transitions. [2022-02-10 22:41:25,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.941176470588236) internal successors, (186), 17 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 3151 transitions. [2022-02-10 22:41:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-10 22:41:25,070 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:25,070 INFO L515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:25,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 22:41:25,275 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,SelfDestructingSolverStorable5 [2022-02-10 22:41:25,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:25,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:25,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1246995681, now seen corresponding path program 1 times [2022-02-10 22:41:25,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:25,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868495984] [2022-02-10 22:41:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:41:25,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:25,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868495984] [2022-02-10 22:41:25,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868495984] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:41:25,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335022613] [2022-02-10 22:41:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:25,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:41:25,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:41:25,429 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) [2022-02-10 22:41:25,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 22:41:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:25,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjunts are in the unsatisfiable core [2022-02-10 22:41:25,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:41:25,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:41:26,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:41:26,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:41:26,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-02-10 22:41:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:26,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:41:28,105 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:41:28,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-02-10 22:41:28,132 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:41:28,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 462 [2022-02-10 22:41:28,143 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:41:28,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 426 [2022-02-10 22:41:28,154 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:41:28,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 410 treesize of output 354 [2022-02-10 22:41:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:28,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335022613] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:41:28,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:41:28,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 25] total 52 [2022-02-10 22:41:28,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49257393] [2022-02-10 22:41:28,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:41:28,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-10 22:41:28,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:28,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-10 22:41:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2150, Unknown=34, NotChecked=0, Total=2652 [2022-02-10 22:41:28,957 INFO L87 Difference]: Start difference. First operand 1187 states and 3151 transitions. Second operand has 52 states, 52 states have (on average 5.634615384615385) internal successors, (293), 52 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:31,542 INFO L93 Difference]: Finished difference Result 3877 states and 10601 transitions. [2022-02-10 22:41:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 22:41:31,542 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.634615384615385) internal successors, (293), 52 states have internal predecessors, (293), 0 states have call successors, (0), 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 117 [2022-02-10 22:41:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:31,555 INFO L225 Difference]: With dead ends: 3877 [2022-02-10 22:41:31,556 INFO L226 Difference]: Without dead ends: 3661 [2022-02-10 22:41:31,557 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 191 SyntacticMatches, 6 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1611, Invalid=7285, Unknown=34, NotChecked=0, Total=8930 [2022-02-10 22:41:31,558 INFO L934 BasicCegarLoop]: 202 mSDtfsCounter, 1298 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 4280 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 689 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:31,558 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 4280 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2041 Invalid, 0 Unknown, 689 Unchecked, 0.9s Time] [2022-02-10 22:41:31,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2022-02-10 22:41:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 2485. [2022-02-10 22:41:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 2.7355072463768115) internal successors, (6795), 2484 states have internal predecessors, (6795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 6795 transitions. [2022-02-10 22:41:31,631 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 6795 transitions. Word has length 117 [2022-02-10 22:41:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:31,632 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 6795 transitions. [2022-02-10 22:41:31,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.634615384615385) internal successors, (293), 52 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 6795 transitions. [2022-02-10 22:41:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-10 22:41:31,638 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:31,638 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:31,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 22:41:31,851 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,SelfDestructingSolverStorable6 [2022-02-10 22:41:31,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:31,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1644303099, now seen corresponding path program 2 times [2022-02-10 22:41:31,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:31,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908036290] [2022-02-10 22:41:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:31,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:41:31,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:31,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908036290] [2022-02-10 22:41:31,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908036290] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:41:31,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003005453] [2022-02-10 22:41:31,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:41:31,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:41:31,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:41:31,942 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) [2022-02-10 22:41:31,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 22:41:32,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:41:32,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:41:32,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:41:32,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:41:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:41:32,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:41:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:41:32,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003005453] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:41:32,462 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:41:32,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 9 [2022-02-10 22:41:32,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255218008] [2022-02-10 22:41:32,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:41:32,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 22:41:32,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 22:41:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-02-10 22:41:32,464 INFO L87 Difference]: Start difference. First operand 2485 states and 6795 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:32,631 INFO L93 Difference]: Finished difference Result 5649 states and 15484 transitions. [2022-02-10 22:41:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 22:41:32,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 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 132 [2022-02-10 22:41:32,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:32,657 INFO L225 Difference]: With dead ends: 5649 [2022-02-10 22:41:32,657 INFO L226 Difference]: Without dead ends: 5237 [2022-02-10 22:41:32,657 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-10 22:41:32,658 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 273 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:32,658 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 919 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:41:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2022-02-10 22:41:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 4725. [2022-02-10 22:41:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4724 states have (on average 2.7847163420829806) internal successors, (13155), 4724 states have internal predecessors, (13155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 13155 transitions. [2022-02-10 22:41:32,772 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 13155 transitions. Word has length 132 [2022-02-10 22:41:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:32,773 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 13155 transitions. [2022-02-10 22:41:32,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 13155 transitions. [2022-02-10 22:41:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 22:41:32,783 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:32,783 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:32,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 22:41:33,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:41:33,001 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1884077583, now seen corresponding path program 1 times [2022-02-10 22:41:33,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:33,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425888784] [2022-02-10 22:41:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:33,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 22:41:33,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:33,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425888784] [2022-02-10 22:41:33,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425888784] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:41:33,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796759042] [2022-02-10 22:41:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:33,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:41:33,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:41:33,173 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) [2022-02-10 22:41:33,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 22:41:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:33,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:41:33,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:41:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:33,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:41:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:34,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796759042] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:41:34,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:41:34,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 15] total 39 [2022-02-10 22:41:34,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559605812] [2022-02-10 22:41:34,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:41:34,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 22:41:34,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 22:41:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:41:34,509 INFO L87 Difference]: Start difference. First operand 4725 states and 13155 transitions. Second operand has 39 states, 39 states have (on average 7.769230769230769) internal successors, (303), 39 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:41:35,221 INFO L93 Difference]: Finished difference Result 4050 states and 11102 transitions. [2022-02-10 22:41:35,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 22:41:35,221 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.769230769230769) internal successors, (303), 39 states have internal predecessors, (303), 0 states have call successors, (0), 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 139 [2022-02-10 22:41:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:41:35,229 INFO L225 Difference]: With dead ends: 4050 [2022-02-10 22:41:35,230 INFO L226 Difference]: Without dead ends: 3751 [2022-02-10 22:41:35,230 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=544, Invalid=2648, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 22:41:35,231 INFO L934 BasicCegarLoop]: 127 mSDtfsCounter, 728 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:41:35,231 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 2525 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:41:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2022-02-10 22:41:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3746. [2022-02-10 22:41:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3746 states, 3745 states have (on average 2.7791722296395194) internal successors, (10408), 3745 states have internal predecessors, (10408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 10408 transitions. [2022-02-10 22:41:35,298 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 10408 transitions. Word has length 139 [2022-02-10 22:41:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:41:35,298 INFO L470 AbstractCegarLoop]: Abstraction has 3746 states and 10408 transitions. [2022-02-10 22:41:35,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.769230769230769) internal successors, (303), 39 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:41:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 10408 transitions. [2022-02-10 22:41:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 22:41:35,305 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:41:35,305 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:41:35,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 22:41:35,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:41:35,523 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:41:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:41:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash -70794599, now seen corresponding path program 2 times [2022-02-10 22:41:35,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:41:35,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252334409] [2022-02-10 22:41:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:41:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:41:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:41:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:36,200 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:41:36,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252334409] [2022-02-10 22:41:36,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252334409] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:41:36,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965477268] [2022-02-10 22:41:36,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:41:36,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:41:36,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:41:36,202 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) [2022-02-10 22:41:36,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 22:41:36,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:41:36,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:41:36,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 63 conjunts are in the unsatisfiable core [2022-02-10 22:41:36,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:41:37,606 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 22:41:37,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-02-10 22:41:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:37,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:41:38,607 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:41:38,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-02-10 22:41:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:41:40,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965477268] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:41:40,018 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:41:40,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 28, 28] total 74 [2022-02-10 22:41:40,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751058927] [2022-02-10 22:41:40,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:41:40,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-10 22:41:40,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:41:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-10 22:41:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=689, Invalid=4713, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 22:41:40,021 INFO L87 Difference]: Start difference. First operand 3746 states and 10408 transitions. Second operand has 74 states, 74 states have (on average 4.783783783783784) internal successors, (354), 74 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:42:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:42:01,421 INFO L93 Difference]: Finished difference Result 34835 states and 98142 transitions. [2022-02-10 22:42:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2022-02-10 22:42:01,421 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.783783783783784) internal successors, (354), 74 states have internal predecessors, (354), 0 states have call successors, (0), 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 146 [2022-02-10 22:42:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:42:01,560 INFO L225 Difference]: With dead ends: 34835 [2022-02-10 22:42:01,560 INFO L226 Difference]: Without dead ends: 31991 [2022-02-10 22:42:01,572 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 246 SyntacticMatches, 6 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59818 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=13823, Invalid=126427, Unknown=0, NotChecked=0, Total=140250 [2022-02-10 22:42:01,573 INFO L934 BasicCegarLoop]: 507 mSDtfsCounter, 6645 mSDsluCounter, 15695 mSDsCounter, 0 mSdLazyCounter, 9150 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6645 SdHoareTripleChecker+Valid, 15651 SdHoareTripleChecker+Invalid, 9824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 9150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:42:01,574 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [6645 Valid, 15651 Invalid, 9824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 9150 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-02-10 22:42:01,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31991 states. [2022-02-10 22:42:01,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31991 to 10340. [2022-02-10 22:42:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10340 states, 10339 states have (on average 2.8594641648128447) internal successors, (29564), 10339 states have internal predecessors, (29564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:42:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10340 states to 10340 states and 29564 transitions. [2022-02-10 22:42:01,922 INFO L78 Accepts]: Start accepts. Automaton has 10340 states and 29564 transitions. Word has length 146 [2022-02-10 22:42:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:42:01,922 INFO L470 AbstractCegarLoop]: Abstraction has 10340 states and 29564 transitions. [2022-02-10 22:42:01,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.783783783783784) internal successors, (354), 74 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:42:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 10340 states and 29564 transitions. [2022-02-10 22:42:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 22:42:01,941 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:42:01,941 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:42:01,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 22:42:02,151 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,SelfDestructingSolverStorable9 [2022-02-10 22:42:02,151 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:42:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:42:02,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1656396143, now seen corresponding path program 3 times [2022-02-10 22:42:02,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:42:02,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37486601] [2022-02-10 22:42:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:42:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:42:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:42:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:42:03,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:42:03,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37486601] [2022-02-10 22:42:03,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37486601] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:42:03,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654489262] [2022-02-10 22:42:03,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:42:03,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:42:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:42:03,606 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) [2022-02-10 22:42:03,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 22:42:03,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:42:03,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:42:03,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 58 conjunts are in the unsatisfiable core [2022-02-10 22:42:03,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:42:04,826 INFO L353 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2022-02-10 22:42:04,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 18 [2022-02-10 22:42:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:42:05,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:42:06,130 INFO L353 Elim1Store]: treesize reduction 76, result has 24.0 percent of original size [2022-02-10 22:42:06,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 49 [2022-02-10 22:42:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 22:42:06,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654489262] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:42:06,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:42:06,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 25, 23] total 78 [2022-02-10 22:42:06,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699504465] [2022-02-10 22:42:06,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:42:06,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-10 22:42:06,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:42:06,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-10 22:42:06,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=5346, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 22:42:06,956 INFO L87 Difference]: Start difference. First operand 10340 states and 29564 transitions. Second operand has 78 states, 78 states have (on average 4.871794871794871) internal successors, (380), 78 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:22,497 INFO L93 Difference]: Finished difference Result 75777 states and 214292 transitions. [2022-02-10 22:43:22,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 703 states. [2022-02-10 22:43:22,497 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 4.871794871794871) internal successors, (380), 78 states have internal predecessors, (380), 0 states have call successors, (0), 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 146 [2022-02-10 22:43:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:22,712 INFO L225 Difference]: With dead ends: 75777 [2022-02-10 22:43:22,712 INFO L226 Difference]: Without dead ends: 69779 [2022-02-10 22:43:22,742 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 271 SyntacticMatches, 11 SemanticMatches, 761 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 278343 ImplicationChecksByTransitivity, 66.8s TimeCoverageRelationStatistics Valid=57355, Invalid=524051, Unknown=0, NotChecked=0, Total=581406 [2022-02-10 22:43:22,742 INFO L934 BasicCegarLoop]: 677 mSDtfsCounter, 8227 mSDsluCounter, 20837 mSDsCounter, 0 mSdLazyCounter, 13219 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8227 SdHoareTripleChecker+Valid, 20533 SdHoareTripleChecker+Invalid, 17119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 13219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2800 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:22,742 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [8227 Valid, 20533 Invalid, 17119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1100 Valid, 13219 Invalid, 0 Unknown, 2800 Unchecked, 7.1s Time] [2022-02-10 22:43:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69779 states. [2022-02-10 22:43:23,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69779 to 19491. [2022-02-10 22:43:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19491 states, 19490 states have (on average 2.903129810159056) internal successors, (56582), 19490 states have internal predecessors, (56582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19491 states to 19491 states and 56582 transitions. [2022-02-10 22:43:23,564 INFO L78 Accepts]: Start accepts. Automaton has 19491 states and 56582 transitions. Word has length 146 [2022-02-10 22:43:23,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:23,564 INFO L470 AbstractCegarLoop]: Abstraction has 19491 states and 56582 transitions. [2022-02-10 22:43:23,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 4.871794871794871) internal successors, (380), 78 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 19491 states and 56582 transitions. [2022-02-10 22:43:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 22:43:23,607 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:23,607 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:43:23,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 22:43:23,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:23,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash -881393145, now seen corresponding path program 4 times [2022-02-10 22:43:23,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:23,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052585853] [2022-02-10 22:43:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 22:43:24,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:24,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052585853] [2022-02-10 22:43:24,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052585853] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:43:24,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620727949] [2022-02-10 22:43:24,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:43:24,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:24,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:24,135 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) [2022-02-10 22:43:24,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 22:43:24,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:43:24,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:43:24,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 83 conjunts are in the unsatisfiable core [2022-02-10 22:43:24,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:43:24,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:43:24,255 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-02-10 22:43:24,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-02-10 22:43:24,522 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-02-10 22:43:24,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-02-10 22:43:24,763 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:43:25,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:43:25,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:43:25,823 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 22:43:25,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 19 [2022-02-10 22:43:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:25,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:43:27,832 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:43:27,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-02-10 22:43:27,862 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:43:27,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 385 [2022-02-10 22:43:27,899 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:43:27,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 307 [2022-02-10 22:43:27,929 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:43:27,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 268 [2022-02-10 22:43:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:31,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620727949] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:43:31,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:43:31,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 35, 34] total 75 [2022-02-10 22:43:31,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695874764] [2022-02-10 22:43:31,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:43:31,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-10 22:43:31,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:31,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-10 22:43:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=819, Invalid=4683, Unknown=48, NotChecked=0, Total=5550 [2022-02-10 22:43:31,173 INFO L87 Difference]: Start difference. First operand 19491 states and 56582 transitions. Second operand has 75 states, 75 states have (on average 4.973333333333334) internal successors, (373), 75 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:02,998 INFO L93 Difference]: Finished difference Result 67582 states and 193099 transitions. [2022-02-10 22:44:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 457 states. [2022-02-10 22:44:02,999 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.973333333333334) internal successors, (373), 75 states have internal predecessors, (373), 0 states have call successors, (0), 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 146 [2022-02-10 22:44:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:03,170 INFO L225 Difference]: With dead ends: 67582 [2022-02-10 22:44:03,171 INFO L226 Difference]: Without dead ends: 64787 [2022-02-10 22:44:03,190 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 266 SyntacticMatches, 9 SemanticMatches, 517 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121461 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=22487, Invalid=246307, Unknown=48, NotChecked=0, Total=268842 [2022-02-10 22:44:03,191 INFO L934 BasicCegarLoop]: 397 mSDtfsCounter, 6095 mSDsluCounter, 13558 mSDsCounter, 0 mSdLazyCounter, 5925 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6095 SdHoareTripleChecker+Valid, 13564 SdHoareTripleChecker+Invalid, 13732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 5925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7034 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:03,192 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [6095 Valid, 13564 Invalid, 13732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 5925 Invalid, 0 Unknown, 7034 Unchecked, 3.2s Time] [2022-02-10 22:44:03,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64787 states. [2022-02-10 22:44:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64787 to 22899. [2022-02-10 22:44:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22899 states, 22898 states have (on average 2.9163245698314264) internal successors, (66778), 22898 states have internal predecessors, (66778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22899 states to 22899 states and 66778 transitions. [2022-02-10 22:44:04,107 INFO L78 Accepts]: Start accepts. Automaton has 22899 states and 66778 transitions. Word has length 146 [2022-02-10 22:44:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:04,107 INFO L470 AbstractCegarLoop]: Abstraction has 22899 states and 66778 transitions. [2022-02-10 22:44:04,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.973333333333334) internal successors, (373), 75 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 22899 states and 66778 transitions. [2022-02-10 22:44:04,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 22:44:04,168 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:04,168 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:44:04,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:04,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:04,383 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1750747461, now seen corresponding path program 5 times [2022-02-10 22:44:04,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:04,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31421855] [2022-02-10 22:44:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:04,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:05,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:05,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31421855] [2022-02-10 22:44:05,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31421855] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:05,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80843545] [2022-02-10 22:44:05,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:44:05,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:05,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:05,845 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) [2022-02-10 22:44:05,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 22:44:05,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:44:05,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:05,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 89 conjunts are in the unsatisfiable core [2022-02-10 22:44:05,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:06,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:44:07,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:44:07,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:44:08,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:44:08,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 22:44:08,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:44:08,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 22:44:08,954 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:44:08,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 21 [2022-02-10 22:44:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:09,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:11,968 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:44:11,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-02-10 22:44:12,007 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:44:12,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 808 treesize of output 758 [2022-02-10 22:44:12,041 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:44:12,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 706 treesize of output 680 [2022-02-10 22:44:12,074 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:44:12,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 524 [2022-02-10 22:44:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:14,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80843545] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:14,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:14,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 39, 35] total 105 [2022-02-10 22:44:14,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475311568] [2022-02-10 22:44:14,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:14,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-10 22:44:14,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:14,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-10 22:44:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=970, Invalid=9939, Unknown=11, NotChecked=0, Total=10920 [2022-02-10 22:44:14,489 INFO L87 Difference]: Start difference. First operand 22899 states and 66778 transitions. Second operand has 105 states, 105 states have (on average 3.6666666666666665) internal successors, (385), 105 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:36,875 INFO L93 Difference]: Finished difference Result 167033 states and 477110 transitions. [2022-02-10 22:46:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 995 states. [2022-02-10 22:46:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 3.6666666666666665) internal successors, (385), 105 states have internal predecessors, (385), 0 states have call successors, (0), 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 146 [2022-02-10 22:46:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:37,465 INFO L225 Difference]: With dead ends: 167033 [2022-02-10 22:46:37,465 INFO L226 Difference]: Without dead ends: 157969 [2022-02-10 22:46:37,526 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 1400 GetRequests, 266 SyntacticMatches, 52 SemanticMatches, 1082 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585106 ImplicationChecksByTransitivity, 123.9s TimeCoverageRelationStatistics Valid=116143, Invalid=1057818, Unknown=11, NotChecked=0, Total=1173972 [2022-02-10 22:46:37,527 INFO L934 BasicCegarLoop]: 619 mSDtfsCounter, 13958 mSDsluCounter, 40618 mSDsCounter, 0 mSdLazyCounter, 21479 mSolverCounterSat, 1704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13958 SdHoareTripleChecker+Valid, 38615 SdHoareTripleChecker+Invalid, 36632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1704 IncrementalHoareTripleChecker+Valid, 21479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13449 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:37,527 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [13958 Valid, 38615 Invalid, 36632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1704 Valid, 21479 Invalid, 0 Unknown, 13449 Unchecked, 11.9s Time] [2022-02-10 22:46:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157969 states. [2022-02-10 22:46:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157969 to 41159. [2022-02-10 22:46:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41159 states, 41158 states have (on average 2.9551484523057487) internal successors, (121628), 41158 states have internal predecessors, (121628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41159 states to 41159 states and 121628 transitions. [2022-02-10 22:46:39,393 INFO L78 Accepts]: Start accepts. Automaton has 41159 states and 121628 transitions. Word has length 146 [2022-02-10 22:46:39,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:39,393 INFO L470 AbstractCegarLoop]: Abstraction has 41159 states and 121628 transitions. [2022-02-10 22:46:39,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 3.6666666666666665) internal successors, (385), 105 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 41159 states and 121628 transitions. [2022-02-10 22:46:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 22:46:39,459 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:39,460 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:46:39,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 22:46:39,675 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,SelfDestructingSolverStorable12 [2022-02-10 22:46:39,675 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:39,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:39,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2009572327, now seen corresponding path program 6 times [2022-02-10 22:46:39,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:39,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050040046] [2022-02-10 22:46:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:39,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:41,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:41,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050040046] [2022-02-10 22:46:41,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050040046] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:41,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105667722] [2022-02-10 22:46:41,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:46:41,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:41,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:41,046 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) [2022-02-10 22:46:41,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 22:46:41,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:46:41,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:41,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 82 conjunts are in the unsatisfiable core [2022-02-10 22:46:41,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:41,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:46:41,518 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:46:41,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:46:41,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:46:42,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:46:42,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:46:43,627 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 22:46:43,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-02-10 22:46:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:43,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:46,832 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:46:46,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-02-10 22:46:46,870 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:46:46,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 385 [2022-02-10 22:46:46,903 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:46:46,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 307 [2022-02-10 22:46:46,935 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:46:46,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 268 [2022-02-10 22:46:50,093 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 22:46:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:50,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105667722] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:50,150 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:50,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 38] total 105 [2022-02-10 22:46:50,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538253306] [2022-02-10 22:46:50,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:50,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-10 22:46:50,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:50,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-10 22:46:50,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=9903, Unknown=17, NotChecked=0, Total=10920 [2022-02-10 22:46:50,152 INFO L87 Difference]: Start difference. First operand 41159 states and 121628 transitions. Second operand has 105 states, 105 states have (on average 3.6666666666666665) internal successors, (385), 105 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:47:22,476 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse11 (select |c_#memory_int| c_~queue~0.base)) (.cse17 (* c_~front~0 4))) (let ((.cse16 (+ c_~front~0 1)) (.cse12 (* c_~back~0 4)) (.cse18 (select .cse11 (+ c_~queue~0.offset .cse17))) (.cse5 (select .cse11 (+ c_~queue~0.offset .cse17 4)))) (let ((.cse0 (let ((.cse19 (+ c_~sum~0 .cse18 .cse5))) (and (not (< 1 .cse19)) (not (< .cse19 0))))) (.cse13 (+ .cse18 1)) (.cse14 (and (<= 0 c_~sum~0) (<= c_~sum~0 1) (= .cse17 .cse12))) (.cse10 (< c_~front~0 0)) (.cse1 (< .cse16 0)) (.cse2 (not (= (+ (select .cse11 (+ c_~queue~0.offset .cse12)) 1) 0))) (.cse3 (<= c_~n~0 .cse16))) (and (or .cse0 .cse1 .cse2 .cse3) (or (let ((.cse4 (+ c_~sum~0 c_~element~0 .cse5))) (and (not (< 1 .cse4)) (not (< .cse4 0)))) .cse1 .cse2 .cse3) (= c_~element~0 1) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#t1~0#1.base|) (or (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_301 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_300) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_301) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse7 (* c_~back~0 4))) (or (not (= (+ (select .cse6 (+ .cse7 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (let ((.cse8 (let ((.cse9 (* c_~front~0 4))) (+ (select .cse6 (+ .cse9 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~sum~0 (select .cse6 (+ .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< .cse8 0)) (not (< 1 .cse8)))) (not (= (select .cse6 (+ .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1))))) .cse10 .cse3) (or (not (= (+ (select .cse11 (+ c_~queue~0.offset .cse12 4)) 1) 0)) .cse0 .cse10 .cse3) (<= 0 .cse13) (or .cse14 .cse10 (< (+ 2 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse3) (= c_~queue~0.offset 0) (<= .cse13 0) (or (< (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post18#1| 2) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse14 .cse10 .cse3) (<= c_~front~0 1) (<= 1 c_~front~0) (= c_~sum~0 0) (or (let ((.cse15 (+ c_~sum~0 .cse5 |c_thread1Thread1of1ForFork0_#t~mem1#1|))) (and (not (< .cse15 0)) (not (< 1 .cse15)))) .cse1 .cse2 .cse3))))) is different from false [2022-02-10 22:47:24,758 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse21 (* c_~front~0 4)) (.cse4 (select |c_#memory_int| c_~queue~0.base)) (.cse5 (* c_~back~0 4))) (let ((.cse7 (select .cse4 (+ c_~queue~0.offset .cse5))) (.cse20 (+ c_~front~0 1)) (.cse10 (select .cse4 (+ c_~queue~0.offset .cse21))) (.cse9 (select .cse4 (+ c_~queue~0.offset .cse21 4)))) (let ((.cse0 (let ((.cse22 (+ c_~sum~0 .cse10 .cse9))) (and (not (< 1 .cse22)) (not (< .cse22 0))))) (.cse18 (+ c_~sum~0 .cse10)) (.cse15 (select .cse4 (+ c_~queue~0.offset .cse21 (- 4)))) (.cse16 (and (<= 0 c_~sum~0) (<= c_~sum~0 1) (= .cse21 .cse5))) (.cse6 (< c_~front~0 0)) (.cse1 (< .cse20 0)) (.cse2 (not (= (+ .cse7 1) 0))) (.cse3 (<= c_~n~0 .cse20))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (= (+ (select .cse4 (+ c_~queue~0.offset .cse5 4)) 1) 0)) .cse0 .cse6 (not (= .cse7 1)) .cse3) (or (let ((.cse8 (+ c_~sum~0 c_~element~0 .cse9))) (and (not (< 1 .cse8)) (not (< .cse8 0)))) .cse1 .cse2 .cse3) (= (+ .cse10 1) 0) (or (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_301 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_300) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_301) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse12 (* c_~back~0 4))) (or (not (= (+ (select .cse11 (+ .cse12 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (let ((.cse13 (let ((.cse14 (* c_~front~0 4))) (+ (select .cse11 (+ .cse14 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~sum~0 (select .cse11 (+ .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< .cse13 0)) (not (< 1 .cse13)))) (not (= (select .cse11 (+ .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1))))) .cse6 .cse3) (< c_~front~0 2) (= c_~sum~0 .cse15) (or .cse16 .cse6 (< (+ 2 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse3) (or (<= c_~n~0 c_~front~0) (let ((.cse17 (+ c_~sum~0 .cse10 c_~element~0))) (and (not (< .cse17 0)) (not (< 1 .cse17)))) .cse6) (<= .cse18 0) (= c_~queue~0.offset 0) (<= 0 .cse18) (= .cse15 1) (or (< (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post18#1| 2) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse16 .cse6 .cse3) (<= c_~front~0 1) (<= 1 c_~front~0) (or (let ((.cse19 (+ c_~sum~0 .cse9 |c_thread1Thread1of1ForFork0_#t~mem1#1|))) (and (not (< .cse19 0)) (not (< 1 .cse19)))) .cse1 .cse2 .cse3))))) is different from false [2022-02-10 22:47:28,984 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse22 (* c_~front~0 4)) (.cse4 (select |c_#memory_int| c_~queue~0.base)) (.cse5 (* c_~back~0 4))) (let ((.cse7 (select .cse4 (+ c_~queue~0.offset .cse5))) (.cse21 (+ c_~front~0 1)) (.cse10 (select .cse4 (+ c_~queue~0.offset .cse22))) (.cse9 (select .cse4 (+ c_~queue~0.offset .cse22 4)))) (let ((.cse0 (let ((.cse23 (+ c_~sum~0 .cse10 .cse9))) (and (not (< 1 .cse23)) (not (< .cse23 0))))) (.cse15 (< c_~front~0 2)) (.cse19 (+ c_~sum~0 .cse10)) (.cse16 (select .cse4 (+ c_~queue~0.offset .cse22 (- 4)))) (.cse17 (and (<= 0 c_~sum~0) (<= c_~sum~0 1) (= .cse22 .cse5))) (.cse6 (< c_~front~0 0)) (.cse1 (< .cse21 0)) (.cse2 (not (= (+ .cse7 1) 0))) (.cse3 (<= c_~n~0 .cse21))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (= (+ (select .cse4 (+ c_~queue~0.offset .cse5 4)) 1) 0)) .cse0 .cse6 (not (= .cse7 1)) .cse3) (or (let ((.cse8 (+ c_~sum~0 c_~element~0 .cse9))) (and (not (< 1 .cse8)) (not (< .cse8 0)))) .cse1 .cse2 .cse3) (= (+ .cse10 1) 0) (or (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_301 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_300) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_301) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse12 (* c_~back~0 4))) (or (not (= (+ (select .cse11 (+ .cse12 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (let ((.cse13 (let ((.cse14 (* c_~front~0 4))) (+ (select .cse11 (+ .cse14 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~sum~0 (select .cse11 (+ .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< .cse13 0)) (not (< 1 .cse13)))) (not (= (select .cse11 (+ .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1))))) .cse6 .cse3) .cse15 (= c_~sum~0 .cse16) (or (and (= |c_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (< c_~front~0 3)) (and .cse15 (= |c_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1))) (or .cse17 .cse6 (< (+ 2 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse3) (or (<= c_~n~0 c_~front~0) (let ((.cse18 (+ c_~sum~0 .cse10 c_~element~0))) (and (not (< .cse18 0)) (not (< 1 .cse18)))) .cse6) (<= .cse19 0) (= c_~queue~0.offset 0) (<= 0 .cse19) (= .cse16 1) (or (< (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post18#1| 2) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse17 .cse6 .cse3) (<= c_~front~0 1) (<= 1 c_~front~0) (or (let ((.cse20 (+ c_~sum~0 .cse9 |c_thread1Thread1of1ForFork0_#t~mem1#1|))) (and (not (< .cse20 0)) (not (< 1 .cse20)))) .cse1 .cse2 .cse3))))) is different from false [2022-02-10 22:47:29,926 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse20 (* c_~front~0 4)) (.cse4 (select |c_#memory_int| c_~queue~0.base)) (.cse5 (* c_~back~0 4))) (let ((.cse7 (select .cse4 (+ c_~queue~0.offset .cse5))) (.cse19 (+ c_~front~0 1)) (.cse10 (select .cse4 (+ c_~queue~0.offset .cse20))) (.cse9 (select .cse4 (+ c_~queue~0.offset .cse20 4)))) (let ((.cse0 (let ((.cse21 (+ c_~sum~0 .cse10 .cse9))) (and (not (< 1 .cse21)) (not (< .cse21 0))))) (.cse15 (select .cse4 (+ c_~queue~0.offset .cse20 (- 4)))) (.cse16 (and (<= 0 c_~sum~0) (<= c_~sum~0 1) (= .cse20 .cse5))) (.cse6 (< c_~front~0 0)) (.cse1 (< .cse19 0)) (.cse2 (not (= (+ .cse7 1) 0))) (.cse3 (<= c_~n~0 .cse19))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (= (+ (select .cse4 (+ c_~queue~0.offset .cse5 4)) 1) 0)) .cse0 .cse6 (not (= .cse7 1)) .cse3) (or (let ((.cse8 (+ c_~sum~0 c_~element~0 .cse9))) (and (not (< 1 .cse8)) (not (< .cse8 0)))) .cse1 .cse2 .cse3) (= (+ .cse10 1) 0) (or (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_301 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_300) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_301) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse12 (* c_~back~0 4))) (or (not (= (+ (select .cse11 (+ .cse12 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (let ((.cse13 (let ((.cse14 (* c_~front~0 4))) (+ (select .cse11 (+ .cse14 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~sum~0 (select .cse11 (+ .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< .cse13 0)) (not (< 1 .cse13)))) (not (= (select .cse11 (+ .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1))))) .cse6 .cse3) (= c_~sum~0 .cse15) (or (and (= |c_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (< c_~front~0 3)) (and (< c_~front~0 2) (= |c_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1))) (or .cse16 .cse6 (< (+ 2 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse3) (or (<= c_~n~0 c_~front~0) (let ((.cse17 (+ c_~sum~0 .cse10 c_~element~0))) (and (not (< .cse17 0)) (not (< 1 .cse17)))) .cse6) (= .cse15 1) (or (< (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post18#1| 2) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse16 .cse6 .cse3) (<= 1 c_~front~0) (or (let ((.cse18 (+ c_~sum~0 .cse9 |c_thread1Thread1of1ForFork0_#t~mem1#1|))) (and (not (< .cse18 0)) (not (< 1 .cse18)))) .cse1 .cse2 .cse3))))) is different from false [2022-02-10 22:47:36,555 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse22 (* c_~front~0 4)) (.cse4 (select |c_#memory_int| c_~queue~0.base)) (.cse5 (* c_~back~0 4))) (let ((.cse7 (select .cse4 (+ c_~queue~0.offset .cse5))) (.cse21 (+ c_~front~0 1)) (.cse10 (select .cse4 (+ c_~queue~0.offset .cse22))) (.cse9 (select .cse4 (+ c_~queue~0.offset .cse22 4)))) (let ((.cse0 (let ((.cse23 (+ c_~sum~0 .cse10 .cse9))) (and (not (< 1 .cse23)) (not (< .cse23 0))))) (.cse15 (< c_~front~0 3)) (.cse16 (< c_~front~0 2)) (.cse17 (select .cse4 (+ c_~queue~0.offset .cse22 (- 4)))) (.cse18 (and (<= 0 c_~sum~0) (<= c_~sum~0 1) (= .cse22 .cse5))) (.cse6 (< c_~front~0 0)) (.cse1 (< .cse21 0)) (.cse2 (not (= (+ .cse7 1) 0))) (.cse3 (<= c_~n~0 .cse21))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (= (+ (select .cse4 (+ c_~queue~0.offset .cse5 4)) 1) 0)) .cse0 .cse6 (not (= .cse7 1)) .cse3) (or (let ((.cse8 (+ c_~sum~0 c_~element~0 .cse9))) (and (not (< 1 .cse8)) (not (< .cse8 0)))) .cse1 .cse2 .cse3) (= (+ .cse10 1) 0) (or (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_301 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_300) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_301) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse12 (* c_~back~0 4))) (or (not (= (+ (select .cse11 (+ .cse12 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (let ((.cse13 (let ((.cse14 (* c_~front~0 4))) (+ (select .cse11 (+ .cse14 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~sum~0 (select .cse11 (+ .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< .cse13 0)) (not (< 1 .cse13)))) (not (= (select .cse11 (+ .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1))))) .cse6 .cse3) (or (and (= |c_thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0) .cse15) (and (= |c_thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) .cse16)) (= c_~sum~0 .cse17) (or (and (= |c_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) .cse15) (and .cse16 (= |c_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1))) (or .cse18 .cse6 (< (+ 2 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse3) (or (<= c_~n~0 c_~front~0) (let ((.cse19 (+ c_~sum~0 .cse10 c_~element~0))) (and (not (< .cse19 0)) (not (< 1 .cse19)))) .cse6) (= .cse17 1) (or (< (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post18#1| 2) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse18 .cse6 .cse3) (<= 1 c_~front~0) (or (let ((.cse20 (+ c_~sum~0 .cse9 |c_thread1Thread1of1ForFork0_#t~mem1#1|))) (and (not (< .cse20 0)) (not (< 1 .cse20)))) .cse1 .cse2 .cse3))))) is different from false [2022-02-10 22:49:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:49:08,574 INFO L93 Difference]: Finished difference Result 214592 states and 621021 transitions. [2022-02-10 22:49:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1015 states. [2022-02-10 22:49:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 3.6666666666666665) internal successors, (385), 105 states have internal predecessors, (385), 0 states have call successors, (0), 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 146 [2022-02-10 22:49:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:49:09,207 INFO L225 Difference]: With dead ends: 214592 [2022-02-10 22:49:09,207 INFO L226 Difference]: Without dead ends: 211218 [2022-02-10 22:49:09,269 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 1390 GetRequests, 275 SyntacticMatches, 16 SemanticMatches, 1099 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 555212 ImplicationChecksByTransitivity, 124.7s TimeCoverageRelationStatistics Valid=83145, Invalid=1116773, Unknown=222, NotChecked=10960, Total=1211100 [2022-02-10 22:49:09,270 INFO L934 BasicCegarLoop]: 474 mSDtfsCounter, 10096 mSDsluCounter, 31612 mSDsCounter, 0 mSdLazyCounter, 17619 mSolverCounterSat, 1191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10096 SdHoareTripleChecker+Valid, 31217 SdHoareTripleChecker+Invalid, 37879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1191 IncrementalHoareTripleChecker+Valid, 17619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19069 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:49:09,270 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [10096 Valid, 31217 Invalid, 37879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1191 Valid, 17619 Invalid, 0 Unknown, 19069 Unchecked, 9.7s Time] [2022-02-10 22:49:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211218 states. [2022-02-10 22:49:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211218 to 57393. [2022-02-10 22:49:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57393 states, 57392 states have (on average 2.959889880122665) internal successors, (169874), 57392 states have internal predecessors, (169874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:49:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57393 states to 57393 states and 169874 transitions. [2022-02-10 22:49:12,462 INFO L78 Accepts]: Start accepts. Automaton has 57393 states and 169874 transitions. Word has length 146 [2022-02-10 22:49:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:49:12,462 INFO L470 AbstractCegarLoop]: Abstraction has 57393 states and 169874 transitions. [2022-02-10 22:49:12,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 3.6666666666666665) internal successors, (385), 105 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:49:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 57393 states and 169874 transitions. [2022-02-10 22:49:12,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 22:49:12,582 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:49:12,582 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:49:12,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 22:49:12,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 22:49:12,803 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:49:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:49:12,804 INFO L85 PathProgramCache]: Analyzing trace with hash 862418857, now seen corresponding path program 7 times [2022-02-10 22:49:12,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:49:12,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720033971] [2022-02-10 22:49:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:49:12,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:49:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:49:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 22:49:13,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:49:13,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720033971] [2022-02-10 22:49:13,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720033971] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:49:13,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842913670] [2022-02-10 22:49:13,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:49:13,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:49:13,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:49:13,207 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) [2022-02-10 22:49:13,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 22:49:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:49:13,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 77 conjunts are in the unsatisfiable core [2022-02-10 22:49:13,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:49:13,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:49:13,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:49:14,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:49:14,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:49:15,218 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-02-10 22:49:15,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 18 [2022-02-10 22:49:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:49:15,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:49:21,195 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-02-10 22:49:21,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 226 treesize of output 145 [2022-02-10 22:49:21,278 INFO L353 Elim1Store]: treesize reduction 62, result has 62.4 percent of original size [2022-02-10 22:49:21,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 821 treesize of output 815 [2022-02-10 22:49:21,321 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-10 22:49:21,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 700 treesize of output 676 [2022-02-10 22:49:21,369 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-10 22:49:21,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 624 treesize of output 524 [2022-02-10 22:49:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:49:34,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842913670] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:49:34,611 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:49:34,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 37, 35] total 78 [2022-02-10 22:49:34,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107709644] [2022-02-10 22:49:34,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:49:34,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-10 22:49:34,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:49:34,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-10 22:49:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=5310, Unknown=75, NotChecked=0, Total=6006 [2022-02-10 22:49:34,613 INFO L87 Difference]: Start difference. First operand 57393 states and 169874 transitions. Second operand has 78 states, 78 states have (on average 4.782051282051282) internal successors, (373), 78 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:50:01,850 INFO L93 Difference]: Finished difference Result 122912 states and 358405 transitions. [2022-02-10 22:50:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2022-02-10 22:50:01,850 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 4.782051282051282) internal successors, (373), 78 states have internal predecessors, (373), 0 states have call successors, (0), 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 146 [2022-02-10 22:50:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:50:02,134 INFO L225 Difference]: With dead ends: 122912 [2022-02-10 22:50:02,134 INFO L226 Difference]: Without dead ends: 121014 [2022-02-10 22:50:02,139 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 232 SyntacticMatches, 18 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46809 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=11369, Invalid=102462, Unknown=75, NotChecked=0, Total=113906 [2022-02-10 22:50:02,140 INFO L934 BasicCegarLoop]: 414 mSDtfsCounter, 4334 mSDsluCounter, 14187 mSDsCounter, 0 mSdLazyCounter, 5420 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 14343 SdHoareTripleChecker+Invalid, 13001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 5420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7152 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:50:02,140 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4334 Valid, 14343 Invalid, 13001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 5420 Invalid, 0 Unknown, 7152 Unchecked, 2.8s Time] [2022-02-10 22:50:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121014 states. [2022-02-10 22:50:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121014 to 59161. [2022-02-10 22:50:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59161 states, 59160 states have (on average 2.96157876943881) internal successors, (175207), 59160 states have internal predecessors, (175207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59161 states to 59161 states and 175207 transitions. [2022-02-10 22:50:04,039 INFO L78 Accepts]: Start accepts. Automaton has 59161 states and 175207 transitions. Word has length 146 [2022-02-10 22:50:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:50:04,040 INFO L470 AbstractCegarLoop]: Abstraction has 59161 states and 175207 transitions. [2022-02-10 22:50:04,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 4.782051282051282) internal successors, (373), 78 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 59161 states and 175207 transitions. [2022-02-10 22:50:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 22:50:04,149 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:50:04,150 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:50:04,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-02-10 22:50:04,351 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,SelfDestructingSolverStorable14 [2022-02-10 22:50:04,352 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:50:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:50:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1148875157, now seen corresponding path program 8 times [2022-02-10 22:50:04,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:50:04,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899905244] [2022-02-10 22:50:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:50:04,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:50:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:50:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:05,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:50:05,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899905244] [2022-02-10 22:50:05,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899905244] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:50:05,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623242708] [2022-02-10 22:50:05,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:50:05,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:50:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:50:05,985 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) [2022-02-10 22:50:05,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 22:50:06,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:50:06,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:50:06,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 84 conjunts are in the unsatisfiable core [2022-02-10 22:50:06,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:50:06,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:50:06,455 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:50:06,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 22:50:06,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:50:06,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:50:07,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:50:07,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:50:08,243 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 22:50:08,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-02-10 22:50:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:08,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:50:11,346 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-02-10 22:50:11,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 138 [2022-02-10 22:50:11,381 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:50:11,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 808 treesize of output 758 [2022-02-10 22:50:11,420 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:50:11,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 706 treesize of output 680 [2022-02-10 22:50:11,456 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:50:11,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 524 [2022-02-10 22:50:13,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 22:50:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:13,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623242708] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:50:13,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:50:13,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 98 [2022-02-10 22:50:13,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737321103] [2022-02-10 22:50:13,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:50:13,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-10 22:50:13,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:50:13,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-10 22:50:13,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=8206, Unknown=59, NotChecked=0, Total=9506 [2022-02-10 22:50:13,712 INFO L87 Difference]: Start difference. First operand 59161 states and 175207 transitions. Second operand has 98 states, 98 states have (on average 3.683673469387755) internal successors, (361), 98 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:50:45,225 INFO L93 Difference]: Finished difference Result 124493 states and 362544 transitions. [2022-02-10 22:50:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 343 states. [2022-02-10 22:50:45,225 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.683673469387755) internal successors, (361), 98 states have internal predecessors, (361), 0 states have call successors, (0), 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 146 [2022-02-10 22:50:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:50:45,561 INFO L225 Difference]: With dead ends: 124493 [2022-02-10 22:50:45,561 INFO L226 Difference]: Without dead ends: 122183 [2022-02-10 22:50:45,568 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 243 SyntacticMatches, 6 SemanticMatches, 418 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68927 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=17048, Invalid=158783, Unknown=149, NotChecked=0, Total=175980 [2022-02-10 22:50:45,568 INFO L934 BasicCegarLoop]: 441 mSDtfsCounter, 4605 mSDsluCounter, 16047 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4605 SdHoareTripleChecker+Valid, 15982 SdHoareTripleChecker+Invalid, 16420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8783 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:50:45,569 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4605 Valid, 15982 Invalid, 16420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 7219 Invalid, 0 Unknown, 8783 Unchecked, 3.8s Time] [2022-02-10 22:50:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122183 states. [2022-02-10 22:50:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122183 to 58157. [2022-02-10 22:50:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58157 states, 58156 states have (on average 2.9594022972694134) internal successors, (172107), 58156 states have internal predecessors, (172107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58157 states to 58157 states and 172107 transitions. [2022-02-10 22:50:47,598 INFO L78 Accepts]: Start accepts. Automaton has 58157 states and 172107 transitions. Word has length 146 [2022-02-10 22:50:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:50:47,598 INFO L470 AbstractCegarLoop]: Abstraction has 58157 states and 172107 transitions. [2022-02-10 22:50:47,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.683673469387755) internal successors, (361), 98 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 58157 states and 172107 transitions. [2022-02-10 22:50:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 22:50:47,900 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:50:47,901 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:50:47,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-10 22:50:48,115 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,SelfDestructingSolverStorable15 [2022-02-10 22:50:48,116 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:50:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:50:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1241835208, now seen corresponding path program 3 times [2022-02-10 22:50:48,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:50:48,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080926765] [2022-02-10 22:50:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:50:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:50:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:50:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-02-10 22:50:48,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:50:48,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080926765] [2022-02-10 22:50:48,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080926765] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:50:48,260 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:50:48,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 22:50:48,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273567896] [2022-02-10 22:50:48,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:50:48,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:50:48,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:50:48,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:50:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:50:48,261 INFO L87 Difference]: Start difference. First operand 58157 states and 172107 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:48,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:50:48,509 INFO L93 Difference]: Finished difference Result 44025 states and 123768 transitions. [2022-02-10 22:50:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:50:48,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 146 [2022-02-10 22:50:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:50:48,601 INFO L225 Difference]: With dead ends: 44025 [2022-02-10 22:50:48,602 INFO L226 Difference]: Without dead ends: 43222 [2022-02-10 22:50:48,602 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:50:48,603 INFO L934 BasicCegarLoop]: 149 mSDtfsCounter, 67 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:50:48,603 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 369 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:50:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43222 states. [2022-02-10 22:50:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43222 to 31177. [2022-02-10 22:50:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31177 states, 31176 states have (on average 2.8203746471644857) internal successors, (87928), 31176 states have internal predecessors, (87928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31177 states to 31177 states and 87928 transitions. [2022-02-10 22:50:49,293 INFO L78 Accepts]: Start accepts. Automaton has 31177 states and 87928 transitions. Word has length 146 [2022-02-10 22:50:49,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:50:49,293 INFO L470 AbstractCegarLoop]: Abstraction has 31177 states and 87928 transitions. [2022-02-10 22:50:49,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:49,293 INFO L276 IsEmpty]: Start isEmpty. Operand 31177 states and 87928 transitions. [2022-02-10 22:50:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-02-10 22:50:49,335 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:50:49,335 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:50:49,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-10 22:50:49,335 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:50:49,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:50:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 856557684, now seen corresponding path program 9 times [2022-02-10 22:50:49,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:50:49,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490619250] [2022-02-10 22:50:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:50:49,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:50:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:50:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-02-10 22:50:49,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:50:49,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490619250] [2022-02-10 22:50:49,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490619250] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:50:49,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583245162] [2022-02-10 22:50:49,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:50:49,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:50:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:50:49,400 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) [2022-02-10 22:50:49,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 22:50:49,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:50:49,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:50:49,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 22:50:49,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:50:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-02-10 22:50:49,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:50:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-02-10 22:50:50,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583245162] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:50:50,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:50:50,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 9] total 20 [2022-02-10 22:50:50,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523423794] [2022-02-10 22:50:50,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:50:50,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:50:50,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:50:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:50:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:50:50,139 INFO L87 Difference]: Start difference. First operand 31177 states and 87928 transitions. Second operand has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:50:51,219 INFO L93 Difference]: Finished difference Result 53224 states and 147853 transitions. [2022-02-10 22:50:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 22:50:51,220 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 0 states have call successors, (0), 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 153 [2022-02-10 22:50:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:50:51,328 INFO L225 Difference]: With dead ends: 53224 [2022-02-10 22:50:51,328 INFO L226 Difference]: Without dead ends: 53224 [2022-02-10 22:50:51,328 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 331 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=710, Invalid=2482, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 22:50:51,329 INFO L934 BasicCegarLoop]: 257 mSDtfsCounter, 2213 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2213 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:50:51,329 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2213 Valid, 2077 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:50:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53224 states. [2022-02-10 22:50:52,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53224 to 32201. [2022-02-10 22:50:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32201 states, 32200 states have (on average 2.8226397515527952) internal successors, (90889), 32200 states have internal predecessors, (90889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32201 states to 32201 states and 90889 transitions. [2022-02-10 22:50:52,117 INFO L78 Accepts]: Start accepts. Automaton has 32201 states and 90889 transitions. Word has length 153 [2022-02-10 22:50:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:50:52,117 INFO L470 AbstractCegarLoop]: Abstraction has 32201 states and 90889 transitions. [2022-02-10 22:50:52,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:52,118 INFO L276 IsEmpty]: Start isEmpty. Operand 32201 states and 90889 transitions. [2022-02-10 22:50:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-02-10 22:50:52,162 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:50:52,162 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:50:52,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-10 22:50:52,362 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,SelfDestructingSolverStorable17 [2022-02-10 22:50:52,363 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:50:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:50:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -28866221, now seen corresponding path program 10 times [2022-02-10 22:50:52,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:50:52,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651940642] [2022-02-10 22:50:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:50:52,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:50:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:50:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 22:50:52,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:50:52,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651940642] [2022-02-10 22:50:52,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651940642] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:50:52,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324115276] [2022-02-10 22:50:52,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:50:52,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:50:52,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:50:52,632 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) [2022-02-10 22:50:52,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 22:50:52,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:50:52,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:50:52,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-10 22:50:52,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:50:54,080 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 22:50:54,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 19 [2022-02-10 22:50:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:54,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:50:54,893 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:50:54,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 76 [2022-02-10 22:50:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:56,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324115276] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:50:56,492 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:50:56,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30, 30] total 65 [2022-02-10 22:50:56,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927512395] [2022-02-10 22:50:56,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:50:56,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-10 22:50:56,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:50:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-10 22:50:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=3643, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 22:50:56,494 INFO L87 Difference]: Start difference. First operand 32201 states and 90889 transitions. Second operand has 65 states, 65 states have (on average 5.815384615384615) internal successors, (378), 65 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:51:20,827 INFO L93 Difference]: Finished difference Result 87735 states and 246632 transitions. [2022-02-10 22:51:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 328 states. [2022-02-10 22:51:20,827 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.815384615384615) internal successors, (378), 65 states have internal predecessors, (378), 0 states have call successors, (0), 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 153 [2022-02-10 22:51:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:51:21,009 INFO L225 Difference]: With dead ends: 87735 [2022-02-10 22:51:21,009 INFO L226 Difference]: Without dead ends: 86309 [2022-02-10 22:51:21,015 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 255 SyntacticMatches, 5 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60081 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=13362, Invalid=128390, Unknown=0, NotChecked=0, Total=141752 [2022-02-10 22:51:21,016 INFO L934 BasicCegarLoop]: 502 mSDtfsCounter, 4633 mSDsluCounter, 15363 mSDsCounter, 0 mSdLazyCounter, 9006 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 15560 SdHoareTripleChecker+Invalid, 9413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 9006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:51:21,016 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4633 Valid, 15560 Invalid, 9413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 9006 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-02-10 22:51:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86309 states. [2022-02-10 22:51:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86309 to 34119. [2022-02-10 22:51:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34119 states, 34118 states have (on average 2.820681165367255) internal successors, (96236), 34118 states have internal predecessors, (96236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34119 states to 34119 states and 96236 transitions. [2022-02-10 22:51:22,101 INFO L78 Accepts]: Start accepts. Automaton has 34119 states and 96236 transitions. Word has length 153 [2022-02-10 22:51:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:51:22,101 INFO L470 AbstractCegarLoop]: Abstraction has 34119 states and 96236 transitions. [2022-02-10 22:51:22,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.815384615384615) internal successors, (378), 65 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 34119 states and 96236 transitions. [2022-02-10 22:51:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-02-10 22:51:22,151 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:51:22,152 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:51:22,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 22:51:22,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:22,352 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:51:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:51:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash 496740617, now seen corresponding path program 11 times [2022-02-10 22:51:22,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:51:22,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083979292] [2022-02-10 22:51:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:51:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:51:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 22:51:22,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:51:22,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083979292] [2022-02-10 22:51:22,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083979292] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:51:22,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6984645] [2022-02-10 22:51:22,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:51:22,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:22,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:51:22,623 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) [2022-02-10 22:51:22,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 22:51:22,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 22:51:22,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:51:22,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 74 conjunts are in the unsatisfiable core [2022-02-10 22:51:22,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:51:24,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 22:51:24,522 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:51:24,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 15 [2022-02-10 22:51:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:24,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:51:25,246 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:51:25,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 76 [2022-02-10 22:51:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:26,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6984645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:51:26,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:51:26,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 34, 28] total 67 [2022-02-10 22:51:26,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211514799] [2022-02-10 22:51:26,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:51:26,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-10 22:51:26,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:51:26,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-10 22:51:26,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=3762, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 22:51:26,461 INFO L87 Difference]: Start difference. First operand 34119 states and 96236 transitions. Second operand has 67 states, 67 states have (on average 5.641791044776119) internal successors, (378), 67 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:51:45,415 INFO L93 Difference]: Finished difference Result 75295 states and 210770 transitions. [2022-02-10 22:51:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 313 states. [2022-02-10 22:51:45,415 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.641791044776119) internal successors, (378), 67 states have internal predecessors, (378), 0 states have call successors, (0), 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 153 [2022-02-10 22:51:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:51:45,550 INFO L225 Difference]: With dead ends: 75295 [2022-02-10 22:51:45,550 INFO L226 Difference]: Without dead ends: 74131 [2022-02-10 22:51:45,554 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 253 SyntacticMatches, 5 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58115 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=12545, Invalid=118137, Unknown=0, NotChecked=0, Total=130682 [2022-02-10 22:51:45,554 INFO L934 BasicCegarLoop]: 394 mSDtfsCounter, 4084 mSDsluCounter, 10575 mSDsCounter, 0 mSdLazyCounter, 6713 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 10765 SdHoareTripleChecker+Invalid, 7244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 6713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:51:45,554 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4084 Valid, 10765 Invalid, 7244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 6713 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-10 22:51:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74131 states. [2022-02-10 22:51:46,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74131 to 38116. [2022-02-10 22:51:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38116 states, 38115 states have (on average 2.8235865144956054) internal successors, (107621), 38115 states have internal predecessors, (107621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38116 states to 38116 states and 107621 transitions. [2022-02-10 22:51:46,385 INFO L78 Accepts]: Start accepts. Automaton has 38116 states and 107621 transitions. Word has length 153 [2022-02-10 22:51:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:51:46,385 INFO L470 AbstractCegarLoop]: Abstraction has 38116 states and 107621 transitions. [2022-02-10 22:51:46,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.641791044776119) internal successors, (378), 67 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 38116 states and 107621 transitions. [2022-02-10 22:51:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-02-10 22:51:46,435 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:51:46,435 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:51:46,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 22:51:46,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:46,645 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:51:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:51:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash -416207995, now seen corresponding path program 12 times [2022-02-10 22:51:46,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:51:46,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564245670] [2022-02-10 22:51:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:51:46,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:51:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 22:51:46,890 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:51:46,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564245670] [2022-02-10 22:51:46,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564245670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:51:46,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065287972] [2022-02-10 22:51:46,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:51:46,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:46,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:51:46,892 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) [2022-02-10 22:51:46,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 22:51:46,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 22:51:46,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:51:46,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 22:51:46,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:51:47,956 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 22:51:47,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 17 [2022-02-10 22:51:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-02-10 22:51:48,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:51:48,465 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 22:51:48,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 76 [2022-02-10 22:51:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 22:51:49,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065287972] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:51:49,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:51:49,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 16] total 37 [2022-02-10 22:51:49,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556280828] [2022-02-10 22:51:49,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:51:49,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 22:51:49,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:51:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 22:51:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 22:51:49,035 INFO L87 Difference]: Start difference. First operand 38116 states and 107621 transitions. Second operand has 37 states, 37 states have (on average 7.756756756756757) internal successors, (287), 37 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:51:50,910 INFO L93 Difference]: Finished difference Result 63645 states and 179462 transitions. [2022-02-10 22:51:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 22:51:50,910 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.756756756756757) internal successors, (287), 37 states have internal predecessors, (287), 0 states have call successors, (0), 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 153 [2022-02-10 22:51:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:51:51,057 INFO L225 Difference]: With dead ends: 63645 [2022-02-10 22:51:51,057 INFO L226 Difference]: Without dead ends: 62990 [2022-02-10 22:51:51,058 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 279 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=661, Invalid=4309, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 22:51:51,058 INFO L934 BasicCegarLoop]: 239 mSDtfsCounter, 1035 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:51:51,058 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 4286 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 22:51:51,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62990 states. [2022-02-10 22:51:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62990 to 37580. [2022-02-10 22:51:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37580 states, 37579 states have (on average 2.8228265786742597) internal successors, (106079), 37579 states have internal predecessors, (106079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37580 states to 37580 states and 106079 transitions. [2022-02-10 22:51:52,003 INFO L78 Accepts]: Start accepts. Automaton has 37580 states and 106079 transitions. Word has length 153 [2022-02-10 22:51:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:51:52,004 INFO L470 AbstractCegarLoop]: Abstraction has 37580 states and 106079 transitions. [2022-02-10 22:51:52,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.756756756756757) internal successors, (287), 37 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 37580 states and 106079 transitions. [2022-02-10 22:51:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-10 22:51:52,059 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:51:52,059 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:51:52,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 22:51:52,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:52,261 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:51:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:51:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash -50091955, now seen corresponding path program 13 times [2022-02-10 22:51:52,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:51:52,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892337203] [2022-02-10 22:51:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:51:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:51:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-10 22:51:52,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:51:52,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892337203] [2022-02-10 22:51:52,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892337203] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:51:52,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919936063] [2022-02-10 22:51:52,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:51:52,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:52,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:51:52,328 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) [2022-02-10 22:51:52,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 22:51:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:52,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:51:52,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:51:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 22:51:52,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:51:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 22:51:52,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919936063] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:51:52,979 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:51:52,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 16 [2022-02-10 22:51:52,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710476948] [2022-02-10 22:51:52,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:51:52,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 22:51:52,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:51:52,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 22:51:52,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-10 22:51:52,981 INFO L87 Difference]: Start difference. First operand 37580 states and 106079 transitions. Second operand has 16 states, 16 states have (on average 11.4375) internal successors, (183), 16 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:51:54,048 INFO L93 Difference]: Finished difference Result 66250 states and 184358 transitions. [2022-02-10 22:51:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 22:51:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.4375) internal successors, (183), 16 states have internal predecessors, (183), 0 states have call successors, (0), 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 161 [2022-02-10 22:51:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:51:54,273 INFO L225 Difference]: With dead ends: 66250 [2022-02-10 22:51:54,273 INFO L226 Difference]: Without dead ends: 63390 [2022-02-10 22:51:54,274 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=579, Invalid=1971, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 22:51:54,274 INFO L934 BasicCegarLoop]: 248 mSDtfsCounter, 1209 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:51:54,274 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 2087 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:51:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63390 states. [2022-02-10 22:51:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63390 to 39547. [2022-02-10 22:51:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39547 states, 39546 states have (on average 2.8114094978000304) internal successors, (111180), 39546 states have internal predecessors, (111180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39547 states to 39547 states and 111180 transitions. [2022-02-10 22:51:55,225 INFO L78 Accepts]: Start accepts. Automaton has 39547 states and 111180 transitions. Word has length 161 [2022-02-10 22:51:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:51:55,225 INFO L470 AbstractCegarLoop]: Abstraction has 39547 states and 111180 transitions. [2022-02-10 22:51:55,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.4375) internal successors, (183), 16 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 39547 states and 111180 transitions. [2022-02-10 22:51:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-10 22:51:55,282 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:51:55,282 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:51:55,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 22:51:55,482 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,SelfDestructingSolverStorable21 [2022-02-10 22:51:55,483 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:51:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:51:55,483 INFO L85 PathProgramCache]: Analyzing trace with hash 381593340, now seen corresponding path program 14 times [2022-02-10 22:51:55,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:51:55,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661080929] [2022-02-10 22:51:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:51:55,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:51:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-02-10 22:51:55,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:51:55,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661080929] [2022-02-10 22:51:55,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661080929] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:51:55,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987450474] [2022-02-10 22:51:55,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:51:55,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:55,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:51:55,628 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) [2022-02-10 22:51:55,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 22:51:55,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:51:55,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:51:55,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 22:51:55,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:51:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-02-10 22:51:56,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:51:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-02-10 22:51:57,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987450474] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:51:57,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:51:57,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2022-02-10 22:51:57,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762460990] [2022-02-10 22:51:57,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:51:57,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-10 22:51:57,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:51:57,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-10 22:51:57,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1490, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 22:51:57,186 INFO L87 Difference]: Start difference. First operand 39547 states and 111180 transitions. Second operand has 43 states, 43 states have (on average 7.116279069767442) internal successors, (306), 43 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:58,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:51:58,111 INFO L93 Difference]: Finished difference Result 32454 states and 88879 transitions. [2022-02-10 22:51:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:51:58,112 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 7.116279069767442) internal successors, (306), 43 states have internal predecessors, (306), 0 states have call successors, (0), 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 168 [2022-02-10 22:51:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:51:58,162 INFO L225 Difference]: With dead ends: 32454 [2022-02-10 22:51:58,162 INFO L226 Difference]: Without dead ends: 26128 [2022-02-10 22:51:58,163 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=842, Invalid=3190, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 22:51:58,163 INFO L934 BasicCegarLoop]: 144 mSDtfsCounter, 1118 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:51:58,164 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 2621 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:51:58,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26128 states. [2022-02-10 22:51:58,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26128 to 17349. [2022-02-10 22:51:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17349 states, 17348 states have (on average 2.791099838598109) internal successors, (48420), 17348 states have internal predecessors, (48420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17349 states to 17349 states and 48420 transitions. [2022-02-10 22:51:58,547 INFO L78 Accepts]: Start accepts. Automaton has 17349 states and 48420 transitions. Word has length 168 [2022-02-10 22:51:58,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:51:58,547 INFO L470 AbstractCegarLoop]: Abstraction has 17349 states and 48420 transitions. [2022-02-10 22:51:58,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 7.116279069767442) internal successors, (306), 43 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 17349 states and 48420 transitions. [2022-02-10 22:51:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-10 22:51:58,570 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:51:58,571 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:51:58,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 22:51:58,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:58,771 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:51:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:51:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash -187075396, now seen corresponding path program 15 times [2022-02-10 22:51:58,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:51:58,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388119565] [2022-02-10 22:51:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:51:58,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:51:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-02-10 22:51:58,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:51:58,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388119565] [2022-02-10 22:51:58,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388119565] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:51:58,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165098110] [2022-02-10 22:51:58,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:51:58,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:51:58,941 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) [2022-02-10 22:51:58,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 22:51:59,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 22:51:59,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:51:59,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 22:51:59,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:51:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 48 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-10 22:51:59,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:52:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-10 22:52:00,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165098110] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:52:00,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:52:00,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 46 [2022-02-10 22:52:00,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26782328] [2022-02-10 22:52:00,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:52:00,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-10 22:52:00,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:52:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-10 22:52:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1843, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 22:52:00,820 INFO L87 Difference]: Start difference. First operand 17349 states and 48420 transitions. Second operand has 46 states, 46 states have (on average 7.978260869565218) internal successors, (367), 46 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:52:01,734 INFO L93 Difference]: Finished difference Result 17015 states and 47470 transitions. [2022-02-10 22:52:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 22:52:01,734 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.978260869565218) internal successors, (367), 46 states have internal predecessors, (367), 0 states have call successors, (0), 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 168 [2022-02-10 22:52:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:52:01,759 INFO L225 Difference]: With dead ends: 17015 [2022-02-10 22:52:01,759 INFO L226 Difference]: Without dead ends: 16280 [2022-02-10 22:52:01,760 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=741, Invalid=4089, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 22:52:01,760 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 1387 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:52:01,761 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 2993 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:52:01,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16280 states. [2022-02-10 22:52:01,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16280 to 15992. [2022-02-10 22:52:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15992 states, 15991 states have (on average 2.805453067350385) internal successors, (44862), 15991 states have internal predecessors, (44862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15992 states to 15992 states and 44862 transitions. [2022-02-10 22:52:02,039 INFO L78 Accepts]: Start accepts. Automaton has 15992 states and 44862 transitions. Word has length 168 [2022-02-10 22:52:02,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:52:02,039 INFO L470 AbstractCegarLoop]: Abstraction has 15992 states and 44862 transitions. [2022-02-10 22:52:02,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.978260869565218) internal successors, (367), 46 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 15992 states and 44862 transitions. [2022-02-10 22:52:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-02-10 22:52:02,059 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:52:02,059 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:52:02,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 22:52:02,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:02,263 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:52:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:52:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1677359612, now seen corresponding path program 16 times [2022-02-10 22:52:02,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:52:02,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466775615] [2022-02-10 22:52:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:52:02,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:52:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:52:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:03,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:52:03,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466775615] [2022-02-10 22:52:03,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466775615] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:52:03,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623816102] [2022-02-10 22:52:03,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:52:03,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:03,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:52:03,699 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) [2022-02-10 22:52:03,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 22:52:03,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:52:03,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:52:03,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 99 conjunts are in the unsatisfiable core [2022-02-10 22:52:03,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:52:03,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:52:03,864 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-10 22:52:03,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-02-10 22:52:04,298 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 22:52:04,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-02-10 22:52:04,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 22:52:05,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:52:05,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 22:52:08,545 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-02-10 22:52:08,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 29 [2022-02-10 22:52:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:08,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:52:16,937 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 22:52:16,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 268 treesize of output 172 [2022-02-10 22:52:17,022 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-02-10 22:52:17,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1076 treesize of output 1044 [2022-02-10 22:52:17,116 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-02-10 22:52:17,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 924 treesize of output 928 [2022-02-10 22:52:17,218 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-02-10 22:52:17,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 808 treesize of output 696 [2022-02-10 22:53:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:44,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623816102] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:53:44,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:53:44,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 47, 47] total 126 [2022-02-10 22:53:44,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128833706] [2022-02-10 22:53:44,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:53:44,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-02-10 22:53:44,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:44,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-02-10 22:53:44,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1461, Invalid=14233, Unknown=56, NotChecked=0, Total=15750 [2022-02-10 22:53:44,496 INFO L87 Difference]: Start difference. First operand 15992 states and 44862 transitions. Second operand has 126 states, 126 states have (on average 3.7142857142857144) internal successors, (468), 126 states have internal predecessors, (468), 0 states have call successors, (0), 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... [2022-02-10 22:54:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-02-10 22:54:00,720 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 297 SyntacticMatches, 20 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26875 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=5546, Invalid=63830, Unknown=56, NotChecked=0, Total=69432 [2022-02-10 22:54:00,721 INFO L934 BasicCegarLoop]: 245 mSDtfsCounter, 3142 mSDsluCounter, 12668 mSDsCounter, 0 mSdLazyCounter, 3604 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3142 SdHoareTripleChecker+Valid, 12646 SdHoareTripleChecker+Invalid, 9122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 3604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5298 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:00,721 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3142 Valid, 12646 Invalid, 9122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 3604 Invalid, 0 Unknown, 5298 Unchecked, 1.7s Time] [2022-02-10 22:54:00,722 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 22:54:00,736 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 22:54:00,736 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 [2022-02-10 22:54:00,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 22:54:00,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:00,923 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (15992states) and FLOYD_HOARE automaton (currently 157 states, 126 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 264 known predicates. [2022-02-10 22:54:00,924 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 22:54:00,924 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 22:54:00,926 INFO L733 BasicCegarLoop]: Path program histogram: [16, 3, 2, 1, 1, 1, 1] [2022-02-10 22:54:00,931 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 22:54:00,931 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 22:54:00,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 10:54:00 BasicIcfg [2022-02-10 22:54:00,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 22:54:00,936 INFO L158 Benchmark]: Toolchain (without parser) took 759192.55ms. Allocated memory was 194.0MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 142.7MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 663.8MB. Max. memory is 8.0GB. [2022-02-10 22:54:00,936 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 22:54:00,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.61ms. Allocated memory is still 194.0MB. Free memory was 142.4MB in the beginning and 167.5MB in the end (delta: -25.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-10 22:54:00,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.50ms. Allocated memory is still 194.0MB. Free memory was 167.5MB in the beginning and 165.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 22:54:00,936 INFO L158 Benchmark]: Boogie Preprocessor took 23.39ms. Allocated memory is still 194.0MB. Free memory was 165.7MB in the beginning and 164.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 22:54:00,936 INFO L158 Benchmark]: RCFGBuilder took 447.71ms. Allocated memory is still 194.0MB. Free memory was 164.0MB in the beginning and 146.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-02-10 22:54:00,936 INFO L158 Benchmark]: TraceAbstraction took 758416.42ms. Allocated memory was 194.0MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 146.1MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 668.5MB. Max. memory is 8.0GB. [2022-02-10 22:54:00,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.61ms. Allocated memory is still 194.0MB. Free memory was 142.4MB in the beginning and 167.5MB in the end (delta: -25.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.50ms. Allocated memory is still 194.0MB. Free memory was 167.5MB in the beginning and 165.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.39ms. Allocated memory is still 194.0MB. Free memory was 165.7MB in the beginning and 164.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 447.71ms. Allocated memory is still 194.0MB. Free memory was 164.0MB in the beginning and 146.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 758416.42ms. Allocated memory was 194.0MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 146.1MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 668.5MB. Max. memory is 8.0GB. * 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: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (15992states) and FLOYD_HOARE automaton (currently 157 states, 126 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 264 known predicates. - TimeoutResultAtElement [Line: 99]: 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 (15992states) and FLOYD_HOARE automaton (currently 157 states, 126 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 264 known predicates. - TimeoutResultAtElement [Line: 100]: 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 (15992states) and FLOYD_HOARE automaton (currently 157 states, 126 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 264 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 168 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 758.3s, OverallIterations: 25, TraceHistogramMax: 3, PathProgramHistogramMax: 16, EmptinessCheckTime: 1.1s, AutomataDifference: 541.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76139 SdHoareTripleChecker+Valid, 56.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76139 mSDsluCounter, 213138 SdHoareTripleChecker+Invalid, 47.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 64274 IncrementalHoareTripleChecker+Unchecked, 214088 mSDsCounter, 8155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108416 IncrementalHoareTripleChecker+Invalid, 180845 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8155 mSolverCounterUnsat, 7026 mSDtfsCounter, 108416 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11325 GetRequests, 5074 SyntacticMatches, 169 SemanticMatches, 6081 ConstructedPredicates, 5 IntricatePredicates, 7 DeprecatedPredicates, 1869481 ImplicationChecksByTransitivity, 482.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59161occurred in iteration=15, InterpolantAutomatonStates: 5052, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.5s AutomataMinimizationTime, 24 MinimizatonAttempts, 693093 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 190.9s InterpolantComputationTime, 6252 NumberOfCodeBlocks, 6174 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 8993 ConstructedInterpolants, 376 QuantifiedInterpolants, 147849 SizeOfPredicates, 553 NumberOfNonLiveVariables, 5853 ConjunctsInSsa, 1000 ConjunctsInUnsatCore, 63 InterpolantComputations, 6 PerfectInterpolantSequences, 923/2380 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