/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:02:57,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:02:57,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:02:57,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:02:57,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:02:57,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:02:57,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:02:57,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:02:57,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:02:57,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:02:57,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:02:57,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:02:57,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:02:57,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:02:57,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:02:57,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:02:57,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:02:57,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:02:57,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:02:57,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:02:57,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:02:57,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:02:57,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:02:57,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:02:57,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 12:02:57,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 12:02:57,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 12:02:57,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 12:02:57,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 12:02:57,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 12:02:57,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:02:57,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:02:57,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:02:57,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:02:57,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:02:57,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:02:57,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:02:57,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:02:57,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:02:57,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:02:57,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:02:57,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 12:02:57,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:02:57,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:02:57,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:02:57,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:02:57,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:02:57,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:02:57,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:02:57,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:02:57,553 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:02:57,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:02:57,554 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:02:57,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:02:57,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:02:57,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:02:57,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:02:57,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:02:57,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:02:57,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:02:57,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:02:57,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:02:57,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:02:57,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:02:57,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:02:57,557 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:02:57,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:02:57,557 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:02:57,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:02:57,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:02:57,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:02:57,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:02:57,769 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:02:57,771 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:02:57,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-01-18 12:02:57,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9e065d8/084cd85c23994d36aefbd9a0b0ce4ff5/FLAG9704a0c10 [2022-01-18 12:02:58,175 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:02:58,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-01-18 12:02:58,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9e065d8/084cd85c23994d36aefbd9a0b0ce4ff5/FLAG9704a0c10 [2022-01-18 12:02:58,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9e065d8/084cd85c23994d36aefbd9a0b0ce4ff5 [2022-01-18 12:02:58,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:02:58,591 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:02:58,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:02:58,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:02:58,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:02:58,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc65297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58, skipping insertion in model container [2022-01-18 12:02:58,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:02:58,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:02:58,784 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] [2022-01-18 12:02:58,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:02:58,802 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:02:58,822 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] [2022-01-18 12:02:58,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:02:58,852 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:02:58,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58 WrapperNode [2022-01-18 12:02:58,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:02:58,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:02:58,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:02:58,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:02:58,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,891 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2022-01-18 12:02:58,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:02:58,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:02:58,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:02:58,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:02:58,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:02:58,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:02:58,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:02:58,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:02:58,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (1/1) ... [2022-01-18 12:02:58,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:02:58,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:02:58,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 12:02:58,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 12:02:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:02:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:02:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:02:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:02:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:02:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:02:58,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:02:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:02:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:02:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:02:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 12:02:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:02:58,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:02:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:02:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:02:58,990 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 12:02:59,080 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:02:59,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:02:59,255 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:02:59,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:02:59,313 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 12:02:59,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:02:59 BoogieIcfgContainer [2022-01-18 12:02:59,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:02:59,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:02:59,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:02:59,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:02:59,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:02:58" (1/3) ... [2022-01-18 12:02:59,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b498ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:02:59, skipping insertion in model container [2022-01-18 12:02:59,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:02:58" (2/3) ... [2022-01-18 12:02:59,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b498ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:02:59, skipping insertion in model container [2022-01-18 12:02:59,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:02:59" (3/3) ... [2022-01-18 12:02:59,321 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2022-01-18 12:02:59,325 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:02:59,325 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:02:59,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:02:59,325 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:02:59,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,366 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,366 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,366 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:02:59,396 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 12:02:59,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:02:59,446 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 12:02:59,446 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 12:02:59,465 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 138 places, 142 transitions, 300 flow [2022-01-18 12:02:59,565 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) [2022-01-18 12:02:59,572 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) [2022-01-18 12:02:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-18 12:02:59,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:02:59,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:02:59,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:02:59,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:02:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash 183716022, now seen corresponding path program 1 times [2022-01-18 12:02:59,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:02:59,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460038215] [2022-01-18 12:02:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:02:59,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:02:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:02:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:02:59,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:02:59,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460038215] [2022-01-18 12:02:59,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460038215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:02:59,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:02:59,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:02:59,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775824438] [2022-01-18 12:02:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:02:59,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:02:59,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:02:59,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:02:59,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:02:59,944 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) [2022-01-18 12:03:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:00,023 INFO L93 Difference]: Finished difference Result 1358 states and 3564 transitions. [2022-01-18 12:03:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:03:00,026 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 [2022-01-18 12:03:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:00,052 INFO L225 Difference]: With dead ends: 1358 [2022-01-18 12:03:00,052 INFO L226 Difference]: Without dead ends: 1293 [2022-01-18 12:03:00,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:03:00,057 INFO L933 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 [2022-01-18 12:03:00,058 INFO L934 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] [2022-01-18 12:03:00,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-01-18 12:03:00,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1293. [2022-01-18 12:03:00,161 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) [2022-01-18 12:03:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3391 transitions. [2022-01-18 12:03:00,168 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3391 transitions. Word has length 87 [2022-01-18 12:03:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:00,168 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 3391 transitions. [2022-01-18 12:03:00,168 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) [2022-01-18 12:03:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3391 transitions. [2022-01-18 12:03:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-18 12:03:00,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:00,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:03:00,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:03:00,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:00,178 INFO L85 PathProgramCache]: Analyzing trace with hash 611453624, now seen corresponding path program 1 times [2022-01-18 12:03:00,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:00,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604188939] [2022-01-18 12:03:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:00,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:00,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:00,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604188939] [2022-01-18 12:03:00,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604188939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:03:00,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:03:00,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:03:00,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489850771] [2022-01-18 12:03:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:03:00,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:03:00,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:00,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:03:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:03:00,349 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) [2022-01-18 12:03:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:00,437 INFO L93 Difference]: Finished difference Result 2395 states and 6374 transitions. [2022-01-18 12:03:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:03:00,438 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 [2022-01-18 12:03:00,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:00,449 INFO L225 Difference]: With dead ends: 2395 [2022-01-18 12:03:00,449 INFO L226 Difference]: Without dead ends: 2161 [2022-01-18 12:03:00,450 INFO L932 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 [2022-01-18 12:03:00,451 INFO L933 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, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:03:00,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 368 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:03:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2022-01-18 12:03:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1355. [2022-01-18 12:03:00,492 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) [2022-01-18 12:03:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3561 transitions. [2022-01-18 12:03:00,500 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3561 transitions. Word has length 88 [2022-01-18 12:03:00,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:00,502 INFO L470 AbstractCegarLoop]: Abstraction has 1355 states and 3561 transitions. [2022-01-18 12:03:00,502 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) [2022-01-18 12:03:00,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3561 transitions. [2022-01-18 12:03:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-18 12:03:00,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:00,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:03:00,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:03:00,510 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:00,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash 423797772, now seen corresponding path program 1 times [2022-01-18 12:03:00,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:00,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263649409] [2022-01-18 12:03:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:00,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:00,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263649409] [2022-01-18 12:03:00,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263649409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:03:00,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:03:00,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 12:03:00,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063495337] [2022-01-18 12:03:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:03:00,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 12:03:00,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 12:03:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 12:03:00,680 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) [2022-01-18 12:03:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:00,760 INFO L93 Difference]: Finished difference Result 1268 states and 3355 transitions. [2022-01-18 12:03:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 12:03:00,767 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 [2022-01-18 12:03:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:00,774 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 12:03:00,774 INFO L226 Difference]: Without dead ends: 1236 [2022-01-18 12:03:00,775 INFO L932 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 [2022-01-18 12:03:00,779 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 50 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:03:00,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 239 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:03:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2022-01-18 12:03:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2022-01-18 12:03:00,810 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) [2022-01-18 12:03:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3283 transitions. [2022-01-18 12:03:00,816 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3283 transitions. Word has length 103 [2022-01-18 12:03:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:00,817 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 3283 transitions. [2022-01-18 12:03:00,817 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) [2022-01-18 12:03:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3283 transitions. [2022-01-18 12:03:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 12:03:00,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:00,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:03:00,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:03:00,822 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:00,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash -636542678, now seen corresponding path program 1 times [2022-01-18 12:03:00,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:00,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123106029] [2022-01-18 12:03:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:00,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:03:00,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:00,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123106029] [2022-01-18 12:03:00,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123106029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:03:00,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:03:00,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 12:03:00,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294283174] [2022-01-18 12:03:00,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:03:00,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 12:03:00,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:00,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 12:03:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 12:03:00,967 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) [2022-01-18 12:03:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:01,002 INFO L93 Difference]: Finished difference Result 1303 states and 3465 transitions. [2022-01-18 12:03:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 12:03:01,003 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 [2022-01-18 12:03:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:01,010 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 12:03:01,010 INFO L226 Difference]: Without dead ends: 1303 [2022-01-18 12:03:01,011 INFO L932 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 [2022-01-18 12:03:01,018 INFO L933 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 [2022-01-18 12:03:01,019 INFO L934 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] [2022-01-18 12:03:01,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-01-18 12:03:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1220. [2022-01-18 12:03:01,055 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) [2022-01-18 12:03:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 3239 transitions. [2022-01-18 12:03:01,061 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 3239 transitions. Word has length 110 [2022-01-18 12:03:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:01,061 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 3239 transitions. [2022-01-18 12:03:01,062 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) [2022-01-18 12:03:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 3239 transitions. [2022-01-18 12:03:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 12:03:01,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:01,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:03:01,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:03:01,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:01,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:01,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1002661117, now seen corresponding path program 1 times [2022-01-18 12:03:01,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:01,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731900971] [2022-01-18 12:03:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:01,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:01,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:01,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731900971] [2022-01-18 12:03:01,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731900971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:03:01,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:03:01,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:03:01,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871087242] [2022-01-18 12:03:01,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:03:01,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:03:01,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:01,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:03:01,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:03:01,261 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) [2022-01-18 12:03:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:01,324 INFO L93 Difference]: Finished difference Result 1272 states and 3334 transitions. [2022-01-18 12:03:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:03:01,325 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 [2022-01-18 12:03:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:01,331 INFO L225 Difference]: With dead ends: 1272 [2022-01-18 12:03:01,331 INFO L226 Difference]: Without dead ends: 1186 [2022-01-18 12:03:01,331 INFO L932 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 [2022-01-18 12:03:01,332 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 69 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 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 [2022-01-18 12:03:01,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 314 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:03:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-18 12:03:01,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2022-01-18 12:03:01,361 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) [2022-01-18 12:03:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 3150 transitions. [2022-01-18 12:03:01,366 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 3150 transitions. Word has length 110 [2022-01-18 12:03:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:01,367 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 3150 transitions. [2022-01-18 12:03:01,367 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) [2022-01-18 12:03:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 3150 transitions. [2022-01-18 12:03:01,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 12:03:01,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:01,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:03:01,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:03:01,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:01,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1152534637, now seen corresponding path program 2 times [2022-01-18 12:03:01,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:01,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643180843] [2022-01-18 12:03:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:01,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:01,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643180843] [2022-01-18 12:03:01,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643180843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:03:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067564510] [2022-01-18 12:03:01,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:03:01,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:03:01,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:03:01,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:03:01,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 12:03:01,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:03:01,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:03:01,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:03:01,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:03:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:02,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:03:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:02,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067564510] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:03:02,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:03:02,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 12:03:02,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028045275] [2022-01-18 12:03:02,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:03:02,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 12:03:02,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 12:03:02,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 12:03:02,364 INFO L87 Difference]: Start difference. First operand 1186 states and 3150 transitions. Second operand has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:02,512 INFO L93 Difference]: Finished difference Result 1223 states and 3196 transitions. [2022-01-18 12:03:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 12:03:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:03:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:02,519 INFO L225 Difference]: With dead ends: 1223 [2022-01-18 12:03:02,519 INFO L226 Difference]: Without dead ends: 1192 [2022-01-18 12:03:02,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:03:02,520 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 334 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:03:02,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 733 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:03:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-01-18 12:03:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1187. [2022-01-18 12:03:02,545 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) [2022-01-18 12:03:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 3151 transitions. [2022-01-18 12:03:02,550 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 3151 transitions. Word has length 110 [2022-01-18 12:03:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:02,551 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 3151 transitions. [2022-01-18 12:03:02,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 3151 transitions. [2022-01-18 12:03:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-18 12:03:02,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:02,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:03:02,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 12:03:02,780 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 [2022-01-18 12:03:02,780 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1523617637, now seen corresponding path program 1 times [2022-01-18 12:03:02,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:02,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734599114] [2022-01-18 12:03:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:02,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:03:02,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:02,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734599114] [2022-01-18 12:03:02,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734599114] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:03:02,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888691829] [2022-01-18 12:03:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:02,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:03:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:03:02,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:03:02,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 12:03:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:03,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 12:03:03,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:03:03,749 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 [2022-01-18 12:03:04,102 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 [2022-01-18 12:03:04,202 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 [2022-01-18 12:03:04,630 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 [2022-01-18 12:03:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:04,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:03:06,297 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:03:06,298 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 [2022-01-18 12:03:06,311 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:03:06,311 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 [2022-01-18 12:03:06,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:03:06,326 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 [2022-01-18 12:03:06,340 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:03:06,340 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 [2022-01-18 12:03:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:07,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888691829] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:03:07,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:03:07,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 25] total 52 [2022-01-18 12:03:07,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186006642] [2022-01-18 12:03:07,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:03:07,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 12:03:07,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 12:03:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2150, Unknown=34, NotChecked=0, Total=2652 [2022-01-18 12:03:07,359 INFO L87 Difference]: Start difference. First operand 1187 states and 3151 transitions. Second operand has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:10,508 INFO L93 Difference]: Finished difference Result 3877 states and 10601 transitions. [2022-01-18 12:03:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 12:03:10,508 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:03:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:10,528 INFO L225 Difference]: With dead ends: 3877 [2022-01-18 12:03:10,528 INFO L226 Difference]: Without dead ends: 3661 [2022-01-18 12:03:10,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 192 SyntacticMatches, 10 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2808 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1517, Invalid=7379, Unknown=34, NotChecked=0, Total=8930 [2022-01-18 12:03:10,531 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1579 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 4216 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 657 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:03:10,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 4216 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1984 Invalid, 0 Unknown, 657 Unchecked, 1.1s Time] [2022-01-18 12:03:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2022-01-18 12:03:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 2485. [2022-01-18 12:03:10,606 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) [2022-01-18 12:03:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 6795 transitions. [2022-01-18 12:03:10,614 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 6795 transitions. Word has length 117 [2022-01-18 12:03:10,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:10,614 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 6795 transitions. [2022-01-18 12:03:10,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:10,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 6795 transitions. [2022-01-18 12:03:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-18 12:03:10,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:10,622 INFO L514 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] [2022-01-18 12:03:10,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 12:03:10,837 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 [2022-01-18 12:03:10,838 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:10,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2095775547, now seen corresponding path program 2 times [2022-01-18 12:03:10,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:10,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347248151] [2022-01-18 12:03:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:10,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:03:10,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347248151] [2022-01-18 12:03:10,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347248151] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:03:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772936153] [2022-01-18 12:03:10,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:03:10,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:03:10,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:03:10,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:03:10,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 12:03:11,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:03:11,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:03:11,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 12:03:11,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:03:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:11,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:03:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:12,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772936153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:03:12,072 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:03:12,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 15] total 29 [2022-01-18 12:03:12,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512071382] [2022-01-18 12:03:12,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:03:12,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 12:03:12,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:12,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 12:03:12,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-01-18 12:03:12,075 INFO L87 Difference]: Start difference. First operand 2485 states and 6795 transitions. Second operand has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:13,636 INFO L93 Difference]: Finished difference Result 5822 states and 15827 transitions. [2022-01-18 12:03:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:03:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:03:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:13,657 INFO L225 Difference]: With dead ends: 5822 [2022-01-18 12:03:13,658 INFO L226 Difference]: Without dead ends: 4195 [2022-01-18 12:03:13,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=891, Invalid=3269, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:03:13,659 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1024 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:03:13,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3622 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:03:13,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2022-01-18 12:03:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 3782. [2022-01-18 12:03:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3781 states have (on average 2.7799523935466808) internal successors, (10511), 3781 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 10511 transitions. [2022-01-18 12:03:13,760 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 10511 transitions. Word has length 132 [2022-01-18 12:03:13,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:13,760 INFO L470 AbstractCegarLoop]: Abstraction has 3782 states and 10511 transitions. [2022-01-18 12:03:13,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 10511 transitions. [2022-01-18 12:03:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:03:13,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:13,771 INFO L514 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] [2022-01-18 12:03:13,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 12:03:13,993 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 [2022-01-18 12:03:13,993 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:13,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1550321171, now seen corresponding path program 1 times [2022-01-18 12:03:13,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:13,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573763412] [2022-01-18 12:03:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:13,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:03:14,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:14,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573763412] [2022-01-18 12:03:14,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573763412] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:03:14,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724168456] [2022-01-18 12:03:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:14,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:03:14,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:03:14,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:03:14,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 12:03:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:14,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-18 12:03:14,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:03:15,269 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 15 treesize of output 11 [2022-01-18 12:03:15,586 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 [2022-01-18 12:03:15,685 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 [2022-01-18 12:03:16,725 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 12:03:16,725 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 [2022-01-18 12:03:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:16,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:03:19,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:03:19,444 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 [2022-01-18 12:03:19,487 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:03:19,487 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 [2022-01-18 12:03:19,528 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:03:19,528 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 [2022-01-18 12:03:19,564 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:03:19,564 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 [2022-01-18 12:03:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:23,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724168456] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:03:23,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:03:23,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 37, 34] total 77 [2022-01-18 12:03:23,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980364248] [2022-01-18 12:03:23,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:03:23,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-18 12:03:23,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-18 12:03:23,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=5017, Unknown=47, NotChecked=0, Total=5852 [2022-01-18 12:03:23,414 INFO L87 Difference]: Start difference. First operand 3782 states and 10511 transitions. Second operand has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:51,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:51,058 INFO L93 Difference]: Finished difference Result 25931 states and 72849 transitions. [2022-01-18 12:03:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2022-01-18 12:03:51,058 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:03:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:51,196 INFO L225 Difference]: With dead ends: 25931 [2022-01-18 12:03:51,196 INFO L226 Difference]: Without dead ends: 23855 [2022-01-18 12:03:51,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 229 SyntacticMatches, 6 SemanticMatches, 406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72565 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=17788, Invalid=148221, Unknown=47, NotChecked=0, Total=166056 [2022-01-18 12:03:51,218 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 5998 mSDsluCounter, 16002 mSDsCounter, 0 mSdLazyCounter, 8188 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5998 SdHoareTripleChecker+Valid, 15768 SdHoareTripleChecker+Invalid, 13123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 8188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4412 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:03:51,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5998 Valid, 15768 Invalid, 13123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 8188 Invalid, 0 Unknown, 4412 Unchecked, 4.3s Time] [2022-01-18 12:03:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23855 states. [2022-01-18 12:03:51,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23855 to 5984. [2022-01-18 12:03:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5983 states have (on average 2.8034430887514623) internal successors, (16773), 5983 states have internal predecessors, (16773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 16773 transitions. [2022-01-18 12:03:51,536 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 16773 transitions. Word has length 146 [2022-01-18 12:03:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:51,536 INFO L470 AbstractCegarLoop]: Abstraction has 5984 states and 16773 transitions. [2022-01-18 12:03:51,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:51,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 16773 transitions. [2022-01-18 12:03:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:03:51,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:51,550 INFO L514 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] [2022-01-18 12:03:51,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-18 12:03:51,773 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 [2022-01-18 12:03:51,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:51,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1190395005, now seen corresponding path program 2 times [2022-01-18 12:03:51,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:51,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647894965] [2022-01-18 12:03:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:51,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:52,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:52,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647894965] [2022-01-18 12:03:52,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647894965] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:03:52,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101543245] [2022-01-18 12:03:52,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:03:52,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:03:52,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:03:52,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:03:52,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 12:03:52,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:03:52,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:03:52,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 12:03:52,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:03:55,171 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-18 12:03:55,172 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 52 treesize of output 25 [2022-01-18 12:03:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:55,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:03:56,275 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 12:03:56,275 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 78 [2022-01-18 12:03:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:58,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101543245] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:03:58,297 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:03:58,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 28] total 79 [2022-01-18 12:03:58,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052797613] [2022-01-18 12:03:58,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:03:58,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-18 12:03:58,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-18 12:03:58,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=5551, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:03:58,299 INFO L87 Difference]: Start difference. First operand 5984 states and 16773 transitions. Second operand has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 79 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:04:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:04:10,996 INFO L93 Difference]: Finished difference Result 24875 states and 69275 transitions. [2022-01-18 12:04:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 12:04:10,996 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 79 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:04:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:04:11,081 INFO L225 Difference]: With dead ends: 24875 [2022-01-18 12:04:11,081 INFO L226 Difference]: Without dead ends: 24703 [2022-01-18 12:04:11,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 271 SyntacticMatches, 17 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27624 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=6248, Invalid=64774, Unknown=0, NotChecked=0, Total=71022 [2022-01-18 12:04:11,085 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 2816 mSDsluCounter, 13647 mSDsCounter, 0 mSdLazyCounter, 4463 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 13419 SdHoareTripleChecker+Invalid, 10157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 4463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5509 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:04:11,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 13419 Invalid, 10157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 4463 Invalid, 0 Unknown, 5509 Unchecked, 2.0s Time] [2022-01-18 12:04:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24703 states. [2022-01-18 12:04:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24703 to 9975. [2022-01-18 12:04:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9975 states, 9974 states have (on average 2.834369360336876) internal successors, (28270), 9974 states have internal predecessors, (28270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:04:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9975 states to 9975 states and 28270 transitions. [2022-01-18 12:04:11,402 INFO L78 Accepts]: Start accepts. Automaton has 9975 states and 28270 transitions. Word has length 146 [2022-01-18 12:04:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:04:11,402 INFO L470 AbstractCegarLoop]: Abstraction has 9975 states and 28270 transitions. [2022-01-18 12:04:11,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 79 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:04:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9975 states and 28270 transitions. [2022-01-18 12:04:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:04:11,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:04:11,423 INFO L514 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] [2022-01-18 12:04:11,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 12:04:11,644 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 [2022-01-18 12:04:11,645 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:04:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:04:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1940002337, now seen corresponding path program 3 times [2022-01-18 12:04:11,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:04:11,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205138887] [2022-01-18 12:04:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:04:11,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:04:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:04:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:04:11,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:04:11,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205138887] [2022-01-18 12:04:11,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205138887] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:04:11,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943774080] [2022-01-18 12:04:11,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:04:11,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:04:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:04:11,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:04:11,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 12:04:12,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:04:12,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:04:12,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 84 conjunts are in the unsatisfiable core [2022-01-18 12:04:12,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:04:12,478 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 [2022-01-18 12:04:12,612 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 [2022-01-18 12:04:12,957 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 [2022-01-18 12:04:13,028 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 [2022-01-18 12:04:15,205 INFO L353 Elim1Store]: treesize reduction 82, result has 18.0 percent of original size [2022-01-18 12:04:15,206 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 52 treesize of output 36 [2022-01-18 12:04:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:04:15,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:04:34,035 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 12:04:34,036 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 224 treesize of output 143 [2022-01-18 12:04:34,111 INFO L353 Elim1Store]: treesize reduction 101, result has 37.3 percent of original size [2022-01-18 12:04:34,111 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 805 treesize of output 760 [2022-01-18 12:04:34,161 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-18 12:04:34,162 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 688 treesize of output 632 [2022-01-18 12:04:34,201 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-18 12:04:34,201 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 616 treesize of output 488 [2022-01-18 12:04:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:04:37,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943774080] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:04:37,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:04:37,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 43, 41] total 92 [2022-01-18 12:04:37,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293239863] [2022-01-18 12:04:37,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:04:37,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-18 12:04:37,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:04:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-18 12:04:37,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=977, Invalid=7334, Unknown=61, NotChecked=0, Total=8372 [2022-01-18 12:04:37,441 INFO L87 Difference]: Start difference. First operand 9975 states and 28270 transitions. Second operand has 92 states, 92 states have (on average 4.1521739130434785) internal successors, (382), 92 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:05:07,299 INFO L93 Difference]: Finished difference Result 27314 states and 77210 transitions. [2022-01-18 12:05:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-01-18 12:05:07,299 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 4.1521739130434785) internal successors, (382), 92 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:05:07,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:05:07,356 INFO L225 Difference]: With dead ends: 27314 [2022-01-18 12:05:07,356 INFO L226 Difference]: Without dead ends: 25904 [2022-01-18 12:05:07,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 250 SyntacticMatches, 14 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15604 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=5004, Invalid=43988, Unknown=70, NotChecked=0, Total=49062 [2022-01-18 12:05:07,359 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 4389 mSDsluCounter, 21850 mSDsCounter, 0 mSdLazyCounter, 4431 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4389 SdHoareTripleChecker+Valid, 21562 SdHoareTripleChecker+Invalid, 13316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 4431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8734 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:05:07,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4389 Valid, 21562 Invalid, 13316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 4431 Invalid, 0 Unknown, 8734 Unchecked, 2.0s Time] [2022-01-18 12:05:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25904 states. [2022-01-18 12:05:07,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25904 to 16308. [2022-01-18 12:05:07,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16308 states, 16307 states have (on average 2.887532961304961) internal successors, (47087), 16307 states have internal predecessors, (47087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16308 states to 16308 states and 47087 transitions. [2022-01-18 12:05:07,767 INFO L78 Accepts]: Start accepts. Automaton has 16308 states and 47087 transitions. Word has length 146 [2022-01-18 12:05:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:05:07,767 INFO L470 AbstractCegarLoop]: Abstraction has 16308 states and 47087 transitions. [2022-01-18 12:05:07,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 4.1521739130434785) internal successors, (382), 92 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 16308 states and 47087 transitions. [2022-01-18 12:05:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:05:07,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:05:07,802 INFO L514 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] [2022-01-18 12:05:07,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 12:05:08,026 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 [2022-01-18 12:05:08,026 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:05:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:05:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1413457919, now seen corresponding path program 4 times [2022-01-18 12:05:08,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:05:08,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007283176] [2022-01-18 12:05:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:05:08,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:05:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:05:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:05:08,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:05:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007283176] [2022-01-18 12:05:08,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007283176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:05:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372631882] [2022-01-18 12:05:08,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:05:08,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:05:08,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:05:08,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:05:08,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 12:05:08,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:05:08,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:05:08,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-18 12:05:08,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:05:08,479 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 [2022-01-18 12:05:08,503 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 12:05:08,504 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 [2022-01-18 12:05:08,786 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-18 12:05:08,786 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 [2022-01-18 12:05:08,924 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 [2022-01-18 12:05:09,055 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 [2022-01-18 12:05:09,392 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 [2022-01-18 12:05:09,472 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 [2022-01-18 12:05:10,334 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 12:05:10,335 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 [2022-01-18 12:05:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:10,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:05:13,251 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-01-18 12:05:13,251 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 [2022-01-18 12:05:13,290 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:05:13,291 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 [2022-01-18 12:05:13,378 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:05:13,378 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 602 [2022-01-18 12:05:13,414 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:05:13,414 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 550 treesize of output 524 [2022-01-18 12:05:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:16,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372631882] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:05:16,249 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:05:16,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 37, 37] total 81 [2022-01-18 12:05:16,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739402965] [2022-01-18 12:05:16,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:05:16,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 12:05:16,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:05:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 12:05:16,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=891, Invalid=5532, Unknown=57, NotChecked=0, Total=6480 [2022-01-18 12:05:16,251 INFO L87 Difference]: Start difference. First operand 16308 states and 47087 transitions. Second operand has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:05:36,914 INFO L93 Difference]: Finished difference Result 45926 states and 131107 transitions. [2022-01-18 12:05:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2022-01-18 12:05:36,915 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:05:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:05:36,998 INFO L225 Difference]: With dead ends: 45926 [2022-01-18 12:05:36,998 INFO L226 Difference]: Without dead ends: 44756 [2022-01-18 12:05:37,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 235 SyntacticMatches, 8 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46896 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=12870, Invalid=105753, Unknown=57, NotChecked=0, Total=118680 [2022-01-18 12:05:37,002 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 3593 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 12549 SdHoareTripleChecker+Invalid, 9580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3892 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:05:37,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3593 Valid, 12549 Invalid, 9580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 5363 Invalid, 0 Unknown, 3892 Unchecked, 2.8s Time] [2022-01-18 12:05:37,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44756 states. [2022-01-18 12:05:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44756 to 14322. [2022-01-18 12:05:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14322 states, 14321 states have (on average 2.8819914810418266) internal successors, (41273), 14321 states have internal predecessors, (41273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14322 states to 14322 states and 41273 transitions. [2022-01-18 12:05:37,465 INFO L78 Accepts]: Start accepts. Automaton has 14322 states and 41273 transitions. Word has length 146 [2022-01-18 12:05:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:05:37,467 INFO L470 AbstractCegarLoop]: Abstraction has 14322 states and 41273 transitions. [2022-01-18 12:05:37,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 14322 states and 41273 transitions. [2022-01-18 12:05:37,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:05:37,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:05:37,499 INFO L514 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] [2022-01-18 12:05:37,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 12:05:37,715 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 [2022-01-18 12:05:37,716 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:05:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:05:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash -415489819, now seen corresponding path program 5 times [2022-01-18 12:05:37,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:05:37,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6929770] [2022-01-18 12:05:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:05:37,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:05:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:05:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:39,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:05:39,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6929770] [2022-01-18 12:05:39,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6929770] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:05:39,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501397250] [2022-01-18 12:05:39,222 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:05:39,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:05:39,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:05:39,223 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:05:39,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 12:05:39,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:05:39,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:05:39,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-18 12:05:39,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:05:41,481 INFO L353 Elim1Store]: treesize reduction 96, result has 6.8 percent of original size [2022-01-18 12:05:41,482 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 49 treesize of output 21 [2022-01-18 12:05:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:41,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:05:42,588 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 12:05:42,588 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 78 [2022-01-18 12:05:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:44,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501397250] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:05:44,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:05:44,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 30, 29] total 86 [2022-01-18 12:05:44,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779739686] [2022-01-18 12:05:44,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:05:44,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 12:05:44,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:05:44,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 12:05:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=6600, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 12:05:44,860 INFO L87 Difference]: Start difference. First operand 14322 states and 41273 transitions. Second operand has 86 states, 86 states have (on average 4.5) internal successors, (387), 86 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:05:55,122 INFO L93 Difference]: Finished difference Result 29706 states and 82531 transitions. [2022-01-18 12:05:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-01-18 12:05:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.5) internal successors, (387), 86 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:05:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:05:55,199 INFO L225 Difference]: With dead ends: 29706 [2022-01-18 12:05:55,199 INFO L226 Difference]: Without dead ends: 29122 [2022-01-18 12:05:55,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 262 SyntacticMatches, 17 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17861 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=4179, Invalid=43563, Unknown=0, NotChecked=0, Total=47742 [2022-01-18 12:05:55,204 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 2647 mSDsluCounter, 11726 mSDsCounter, 0 mSdLazyCounter, 3264 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 11778 SdHoareTripleChecker+Invalid, 6681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 3264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3271 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:05:55,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2647 Valid, 11778 Invalid, 6681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 3264 Invalid, 0 Unknown, 3271 Unchecked, 1.6s Time] [2022-01-18 12:05:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29122 states. [2022-01-18 12:05:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29122 to 15633. [2022-01-18 12:05:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15633 states, 15632 states have (on average 2.8643807574206757) internal successors, (44776), 15632 states have internal predecessors, (44776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 44776 transitions. [2022-01-18 12:05:55,661 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 44776 transitions. Word has length 146 [2022-01-18 12:05:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:05:55,661 INFO L470 AbstractCegarLoop]: Abstraction has 15633 states and 44776 transitions. [2022-01-18 12:05:55,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.5) internal successors, (387), 86 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:55,661 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 44776 transitions. [2022-01-18 12:05:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:05:55,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:05:55,683 INFO L514 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] [2022-01-18 12:05:55,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-18 12:05:55,883 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 [2022-01-18 12:05:55,883 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:05:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:05:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 210734853, now seen corresponding path program 6 times [2022-01-18 12:05:55,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:05:55,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520586129] [2022-01-18 12:05:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:05:55,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:05:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:05:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:57,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:05:57,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520586129] [2022-01-18 12:05:57,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520586129] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:05:57,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063780306] [2022-01-18 12:05:57,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:05:57,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:05:57,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:05:57,215 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:05:57,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 12:05:57,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:05:57,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:05:57,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-18 12:05:57,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:05:57,946 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 [2022-01-18 12:05:58,341 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 [2022-01-18 12:05:58,432 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 [2022-01-18 12:05:59,779 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 12:05:59,779 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 [2022-01-18 12:05:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:59,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:06:02,420 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:06:02,421 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 [2022-01-18 12:06:02,462 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:06:02,462 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 [2022-01-18 12:06:02,496 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:06:02,496 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 [2022-01-18 12:06:02,529 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:06:02,530 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 [2022-01-18 12:06:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:06:05,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063780306] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:06:05,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:06:05,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 39, 36] total 96 [2022-01-18 12:06:05,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996579944] [2022-01-18 12:06:05,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:06:05,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-18 12:06:05,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:06:05,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-18 12:06:05,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1046, Invalid=8026, Unknown=48, NotChecked=0, Total=9120 [2022-01-18 12:06:05,358 INFO L87 Difference]: Start difference. First operand 15633 states and 44776 transitions. Second operand has 96 states, 96 states have (on average 3.6979166666666665) internal successors, (355), 96 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:07:25,628 INFO L93 Difference]: Finished difference Result 64553 states and 182841 transitions. [2022-01-18 12:07:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 626 states. [2022-01-18 12:07:25,629 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.6979166666666665) internal successors, (355), 96 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:07:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:07:25,889 INFO L225 Difference]: With dead ends: 64553 [2022-01-18 12:07:25,889 INFO L226 Difference]: Without dead ends: 62624 [2022-01-18 12:07:25,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 236 SyntacticMatches, 11 SemanticMatches, 706 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225915 ImplicationChecksByTransitivity, 73.0s TimeCoverageRelationStatistics Valid=42858, Invalid=457648, Unknown=50, NotChecked=0, Total=500556 [2022-01-18 12:07:25,907 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 7257 mSDsluCounter, 22375 mSDsCounter, 0 mSdLazyCounter, 12435 mSolverCounterSat, 952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7257 SdHoareTripleChecker+Valid, 22224 SdHoareTripleChecker+Invalid, 17726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 952 IncrementalHoareTripleChecker+Valid, 12435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4339 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:07:25,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7257 Valid, 22224 Invalid, 17726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [952 Valid, 12435 Invalid, 0 Unknown, 4339 Unchecked, 7.3s Time] [2022-01-18 12:07:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62624 states. [2022-01-18 12:07:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62624 to 19749. [2022-01-18 12:07:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19749 states, 19748 states have (on average 2.906775369657687) internal successors, (57403), 19748 states have internal predecessors, (57403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19749 states to 19749 states and 57403 transitions. [2022-01-18 12:07:26,487 INFO L78 Accepts]: Start accepts. Automaton has 19749 states and 57403 transitions. Word has length 146 [2022-01-18 12:07:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:07:26,487 INFO L470 AbstractCegarLoop]: Abstraction has 19749 states and 57403 transitions. [2022-01-18 12:07:26,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.6979166666666665) internal successors, (355), 96 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 19749 states and 57403 transitions. [2022-01-18 12:07:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:07:26,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:07:26,515 INFO L514 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] [2022-01-18 12:07:26,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 12:07:26,716 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 [2022-01-18 12:07:26,716 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:07:26,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:07:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash 223607271, now seen corresponding path program 7 times [2022-01-18 12:07:26,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:07:26,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178008088] [2022-01-18 12:07:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:07:26,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:07:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:07:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:07:27,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:07:27,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178008088] [2022-01-18 12:07:27,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178008088] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:07:27,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48847804] [2022-01-18 12:07:27,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:07:27,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:07:27,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:07:27,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:07:27,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 12:07:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:07:27,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 12:07:27,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:07:28,958 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-18 12:07:28,959 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 52 treesize of output 25 [2022-01-18 12:07:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:29,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:07:29,931 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 12:07:29,931 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 78 [2022-01-18 12:07:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:31,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48847804] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:07:31,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:07:31,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28, 28] total 63 [2022-01-18 12:07:31,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280379333] [2022-01-18 12:07:31,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:07:31,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-18 12:07:31,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:07:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-18 12:07:31,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3462, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 12:07:31,899 INFO L87 Difference]: Start difference. First operand 19749 states and 57403 transitions. Second operand has 63 states, 63 states have (on average 5.857142857142857) internal successors, (369), 63 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:07:42,454 INFO L93 Difference]: Finished difference Result 42781 states and 121433 transitions. [2022-01-18 12:07:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-01-18 12:07:42,454 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.857142857142857) internal successors, (369), 63 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:07:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:07:42,525 INFO L225 Difference]: With dead ends: 42781 [2022-01-18 12:07:42,525 INFO L226 Difference]: Without dead ends: 42297 [2022-01-18 12:07:42,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 274 SyntacticMatches, 10 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 23085 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=6592, Invalid=50768, Unknown=0, NotChecked=0, Total=57360 [2022-01-18 12:07:42,528 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 2378 mSDsluCounter, 11098 mSDsCounter, 0 mSdLazyCounter, 3992 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 11115 SdHoareTripleChecker+Invalid, 6194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 3992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1994 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:07:42,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 11115 Invalid, 6194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 3992 Invalid, 0 Unknown, 1994 Unchecked, 1.8s Time] [2022-01-18 12:07:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42297 states. [2022-01-18 12:07:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42297 to 25922. [2022-01-18 12:07:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25922 states, 25921 states have (on average 2.907603873307357) internal successors, (75368), 25921 states have internal predecessors, (75368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25922 states to 25922 states and 75368 transitions. [2022-01-18 12:07:43,046 INFO L78 Accepts]: Start accepts. Automaton has 25922 states and 75368 transitions. Word has length 146 [2022-01-18 12:07:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:07:43,047 INFO L470 AbstractCegarLoop]: Abstraction has 25922 states and 75368 transitions. [2022-01-18 12:07:43,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.857142857142857) internal successors, (369), 63 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 25922 states and 75368 transitions. [2022-01-18 12:07:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:07:43,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:07:43,095 INFO L514 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] [2022-01-18 12:07:43,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 12:07:43,315 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 [2022-01-18 12:07:43,315 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:07:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:07:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1063240453, now seen corresponding path program 8 times [2022-01-18 12:07:43,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:07:43,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601584116] [2022-01-18 12:07:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:07:43,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:07:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:07:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:44,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:07:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601584116] [2022-01-18 12:07:44,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601584116] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:07:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907836937] [2022-01-18 12:07:44,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:07:44,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:07:44,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:07:44,622 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:07:44,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 12:07:44,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:07:44,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:07:44,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-18 12:07:44,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:07:45,447 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 [2022-01-18 12:07:45,821 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 [2022-01-18 12:07:45,902 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 [2022-01-18 12:07:47,483 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-18 12:07:47,483 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 48 treesize of output 21 [2022-01-18 12:07:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:47,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:07:52,241 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:07:52,241 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 184 treesize of output 124 [2022-01-18 12:07:52,274 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 12:07:52,274 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 380 treesize of output 382 [2022-01-18 12:07:52,307 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 12:07:52,307 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 330 treesize of output 306 [2022-01-18 12:07:52,341 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 12:07:52,342 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 254 treesize of output 268 [2022-01-18 12:07:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:56,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907836937] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:07:56,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:07:56,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 34] total 94 [2022-01-18 12:07:56,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128848009] [2022-01-18 12:07:56,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:07:56,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 12:07:56,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:07:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 12:07:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=7894, Unknown=39, NotChecked=0, Total=8742 [2022-01-18 12:07:56,740 INFO L87 Difference]: Start difference. First operand 25922 states and 75368 transitions. Second operand has 94 states, 94 states have (on average 4.053191489361702) internal successors, (381), 94 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:08:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:08:04,724 INFO L93 Difference]: Finished difference Result 41788 states and 120139 transitions. [2022-01-18 12:08:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-18 12:08:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.053191489361702) internal successors, (381), 94 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:08:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:08:04,800 INFO L225 Difference]: With dead ends: 41788 [2022-01-18 12:08:04,800 INFO L226 Difference]: Without dead ends: 41352 [2022-01-18 12:08:04,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 247 SyntacticMatches, 13 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11325 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=3019, Invalid=30248, Unknown=39, NotChecked=0, Total=33306 [2022-01-18 12:08:04,803 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 2470 mSDsluCounter, 10617 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 10474 SdHoareTripleChecker+Invalid, 8210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5069 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:08:04,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2470 Valid, 10474 Invalid, 8210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 3007 Invalid, 0 Unknown, 5069 Unchecked, 1.4s Time] [2022-01-18 12:08:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41352 states. [2022-01-18 12:08:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41352 to 29082. [2022-01-18 12:08:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29082 states, 29081 states have (on average 2.913036002888484) internal successors, (84714), 29081 states have internal predecessors, (84714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:08:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29082 states to 29082 states and 84714 transitions. [2022-01-18 12:08:05,510 INFO L78 Accepts]: Start accepts. Automaton has 29082 states and 84714 transitions. Word has length 146 [2022-01-18 12:08:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:08:05,511 INFO L470 AbstractCegarLoop]: Abstraction has 29082 states and 84714 transitions. [2022-01-18 12:08:05,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.053191489361702) internal successors, (381), 94 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:08:05,511 INFO L276 IsEmpty]: Start isEmpty. Operand 29082 states and 84714 transitions. [2022-01-18 12:08:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:08:05,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:08:05,553 INFO L514 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] [2022-01-18 12:08:05,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-18 12:08:05,753 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 [2022-01-18 12:08:05,753 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:08:05,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:08:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash 536696035, now seen corresponding path program 9 times [2022-01-18 12:08:05,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:08:05,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57811519] [2022-01-18 12:08:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:08:05,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:08:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:08:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:08:07,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:08:07,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57811519] [2022-01-18 12:08:07,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57811519] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:08:07,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329100106] [2022-01-18 12:08:07,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:08:07,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:08:07,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:08:07,159 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:08:07,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 12:08:07,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:08:07,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:08:07,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 84 conjunts are in the unsatisfiable core [2022-01-18 12:08:07,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:08:07,914 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 [2022-01-18 12:08:08,092 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 [2022-01-18 12:08:08,482 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 [2022-01-18 12:08:08,566 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 [2022-01-18 12:08:10,806 INFO L353 Elim1Store]: treesize reduction 82, result has 18.0 percent of original size [2022-01-18 12:08:10,806 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 48 treesize of output 32 [2022-01-18 12:08:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:08:11,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:08:27,277 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 12:08:27,277 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 224 treesize of output 143 [2022-01-18 12:08:27,333 INFO L353 Elim1Store]: treesize reduction 101, result has 37.3 percent of original size [2022-01-18 12:08:27,334 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 393 treesize of output 396 [2022-01-18 12:08:27,366 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-18 12:08:27,366 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 324 treesize of output 268 [2022-01-18 12:08:27,397 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-18 12:08:27,398 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 252 treesize of output 232 [2022-01-18 12:08:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:08:30,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329100106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:08:30,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:08:30,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 43, 41] total 111 [2022-01-18 12:08:30,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354888592] [2022-01-18 12:08:30,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:08:30,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-18 12:08:30,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:08:30,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-18 12:08:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=10865, Unknown=63, NotChecked=0, Total=12210 [2022-01-18 12:08:30,328 INFO L87 Difference]: Start difference. First operand 29082 states and 84714 transitions. Second operand has 111 states, 111 states have (on average 3.4954954954954953) internal successors, (388), 111 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:10:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:10:25,901 INFO L93 Difference]: Finished difference Result 48152 states and 135636 transitions. [2022-01-18 12:10:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-01-18 12:10:25,901 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 3.4954954954954953) internal successors, (388), 111 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:10:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:10:26,015 INFO L225 Difference]: With dead ends: 48152 [2022-01-18 12:10:26,016 INFO L226 Difference]: Without dead ends: 47414 [2022-01-18 12:10:26,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 277 SyntacticMatches, 37 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 30831 ImplicationChecksByTransitivity, 117.4s TimeCoverageRelationStatistics Valid=5981, Invalid=72058, Unknown=81, NotChecked=0, Total=78120 [2022-01-18 12:10:26,020 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 3983 mSDsluCounter, 22458 mSDsCounter, 0 mSdLazyCounter, 4153 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3983 SdHoareTripleChecker+Valid, 22173 SdHoareTripleChecker+Invalid, 13064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8789 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:10:26,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3983 Valid, 22173 Invalid, 13064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 4153 Invalid, 0 Unknown, 8789 Unchecked, 2.0s Time] [2022-01-18 12:10:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47414 states. [2022-01-18 12:10:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47414 to 35230. [2022-01-18 12:10:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35230 states, 35229 states have (on average 2.887365522722757) internal successors, (101719), 35229 states have internal predecessors, (101719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:10:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35230 states to 35230 states and 101719 transitions. [2022-01-18 12:10:26,910 INFO L78 Accepts]: Start accepts. Automaton has 35230 states and 101719 transitions. Word has length 146 [2022-01-18 12:10:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:10:26,910 INFO L470 AbstractCegarLoop]: Abstraction has 35230 states and 101719 transitions. [2022-01-18 12:10:26,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 3.4954954954954953) internal successors, (388), 111 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:10:26,910 INFO L276 IsEmpty]: Start isEmpty. Operand 35230 states and 101719 transitions. [2022-01-18 12:10:27,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:10:27,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:10:27,132 INFO L514 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] [2022-01-18 12:10:27,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-18 12:10:27,334 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,SelfDestructingSolverStorable16 [2022-01-18 12:10:27,334 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:10:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:10:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1718972163, now seen corresponding path program 10 times [2022-01-18 12:10:27,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:10:27,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961538513] [2022-01-18 12:10:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:10:27,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:10:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:10:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:10:27,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:10:27,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961538513] [2022-01-18 12:10:27,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961538513] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:10:27,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833687360] [2022-01-18 12:10:27,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:10:27,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:10:27,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:10:27,704 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:10:27,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 12:10:27,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:10:27,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:10:27,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-18 12:10:27,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:10:27,831 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 [2022-01-18 12:10:27,863 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 12:10:27,864 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 14 [2022-01-18 12:10:28,174 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-18 12:10:28,175 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 [2022-01-18 12:10:28,317 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 [2022-01-18 12:10:28,464 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 [2022-01-18 12:10:28,772 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 [2022-01-18 12:10:28,847 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 [2022-01-18 12:10:29,818 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 12:10:29,818 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 [2022-01-18 12:10:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:10:29,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:10:33,588 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-01-18 12:10:33,589 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 [2022-01-18 12:10:33,626 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:10:33,626 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 [2022-01-18 12:10:33,662 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:10:33,663 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 [2022-01-18 12:10:33,700 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:10:33,701 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 [2022-01-18 12:10:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:10:38,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833687360] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:10:38,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:10:38,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 37, 37] total 81 [2022-01-18 12:10:38,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950795425] [2022-01-18 12:10:38,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:10:38,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 12:10:38,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:10:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 12:10:38,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=5508, Unknown=61, NotChecked=0, Total=6480 [2022-01-18 12:10:38,277 INFO L87 Difference]: Start difference. First operand 35230 states and 101719 transitions. Second operand has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:32,741 INFO L93 Difference]: Finished difference Result 91716 states and 262059 transitions. [2022-01-18 12:11:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 620 states. [2022-01-18 12:11:32,741 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:11:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:33,185 INFO L225 Difference]: With dead ends: 91716 [2022-01-18 12:11:33,186 INFO L226 Difference]: Without dead ends: 89502 [2022-01-18 12:11:33,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 265 SyntacticMatches, 7 SemanticMatches, 671 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201371 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=31882, Invalid=420313, Unknown=61, NotChecked=0, Total=452256 [2022-01-18 12:11:33,210 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 5818 mSDsluCounter, 20698 mSDsCounter, 0 mSdLazyCounter, 9184 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5818 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 23195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 9184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13449 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:33,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5818 Valid, 20688 Invalid, 23195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [562 Valid, 9184 Invalid, 0 Unknown, 13449 Unchecked, 5.9s Time] [2022-01-18 12:11:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89502 states. [2022-01-18 12:11:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89502 to 43804. [2022-01-18 12:11:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43804 states, 43803 states have (on average 2.9021299910965004) internal successors, (127122), 43803 states have internal predecessors, (127122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43804 states to 43804 states and 127122 transitions. [2022-01-18 12:11:34,906 INFO L78 Accepts]: Start accepts. Automaton has 43804 states and 127122 transitions. Word has length 146 [2022-01-18 12:11:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:34,907 INFO L470 AbstractCegarLoop]: Abstraction has 43804 states and 127122 transitions. [2022-01-18 12:11:34,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 43804 states and 127122 transitions. [2022-01-18 12:11:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:11:34,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:34,992 INFO L514 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] [2022-01-18 12:11:35,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-18 12:11:35,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 12:11:35,193 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:35,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:35,195 INFO L85 PathProgramCache]: Analyzing trace with hash -161174420, now seen corresponding path program 3 times [2022-01-18 12:11:35,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:35,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920525387] [2022-01-18 12:11:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:35,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-18 12:11:35,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:35,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920525387] [2022-01-18 12:11:35,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920525387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:11:35,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:11:35,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 12:11:35,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882707738] [2022-01-18 12:11:35,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:11:35,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 12:11:35,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 12:11:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 12:11:35,262 INFO L87 Difference]: Start difference. First operand 43804 states and 127122 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 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) [2022-01-18 12:11:35,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:35,818 INFO L93 Difference]: Finished difference Result 32338 states and 89746 transitions. [2022-01-18 12:11:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 12:11:35,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 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 146 [2022-01-18 12:11:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:35,902 INFO L225 Difference]: With dead ends: 32338 [2022-01-18 12:11:35,903 INFO L226 Difference]: Without dead ends: 32338 [2022-01-18 12:11:35,903 INFO L932 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 [2022-01-18 12:11:35,903 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 66 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 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 [2022-01-18 12:11:35,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 369 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:11:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32338 states. [2022-01-18 12:11:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32338 to 22713. [2022-01-18 12:11:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22713 states, 22712 states have (on average 2.7916519901373724) internal successors, (63404), 22712 states have internal predecessors, (63404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22713 states to 22713 states and 63404 transitions. [2022-01-18 12:11:36,448 INFO L78 Accepts]: Start accepts. Automaton has 22713 states and 63404 transitions. Word has length 146 [2022-01-18 12:11:36,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:36,449 INFO L470 AbstractCegarLoop]: Abstraction has 22713 states and 63404 transitions. [2022-01-18 12:11:36,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 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) [2022-01-18 12:11:36,449 INFO L276 IsEmpty]: Start isEmpty. Operand 22713 states and 63404 transitions. [2022-01-18 12:11:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:11:36,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:36,486 INFO L514 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] [2022-01-18 12:11:36,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 12:11:36,486 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1411117257, now seen corresponding path program 11 times [2022-01-18 12:11:36,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:36,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406967192] [2022-01-18 12:11:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:36,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:38,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406967192] [2022-01-18 12:11:38,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406967192] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:11:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183653238] [2022-01-18 12:11:38,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:11:38,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:11:38,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:11:38,951 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:11:38,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 12:11:39,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:11:39,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:11:39,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-18 12:11:39,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:11:41,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:11:41,446 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:11:41,446 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 47 treesize of output 19 [2022-01-18 12:11:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:41,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:11:42,816 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:11:42,816 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 [2022-01-18 12:11:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:44,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183653238] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:11:44,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:11:44,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 34, 28] total 94 [2022-01-18 12:11:44,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461446914] [2022-01-18 12:11:44,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:11:44,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 12:11:44,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 12:11:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=801, Invalid=7941, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 12:11:44,613 INFO L87 Difference]: Start difference. First operand 22713 states and 63404 transitions. Second operand has 94 states, 94 states have (on average 4.117021276595745) internal successors, (387), 94 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:24,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:24,871 INFO L93 Difference]: Finished difference Result 144055 states and 401535 transitions. [2022-01-18 12:13:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 732 states. [2022-01-18 12:13:24,871 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.117021276595745) internal successors, (387), 94 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have 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 [2022-01-18 12:13:24,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:25,365 INFO L225 Difference]: With dead ends: 144055 [2022-01-18 12:13:25,365 INFO L226 Difference]: Without dead ends: 137594 [2022-01-18 12:13:25,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 803 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295506 ImplicationChecksByTransitivity, 87.7s TimeCoverageRelationStatistics Valid=60675, Invalid=586545, Unknown=0, NotChecked=0, Total=647220 [2022-01-18 12:13:25,391 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 8340 mSDsluCounter, 29647 mSDsCounter, 0 mSdLazyCounter, 19723 mSolverCounterSat, 1568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8340 SdHoareTripleChecker+Valid, 28920 SdHoareTripleChecker+Invalid, 21291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1568 IncrementalHoareTripleChecker+Valid, 19723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:25,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8340 Valid, 28920 Invalid, 21291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1568 Valid, 19723 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-01-18 12:13:25,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137594 states. [2022-01-18 12:13:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137594 to 35137. [2022-01-18 12:13:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35137 states, 35136 states have (on average 2.834443306010929) internal successors, (99591), 35136 states have internal predecessors, (99591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35137 states to 35137 states and 99591 transitions. [2022-01-18 12:13:27,011 INFO L78 Accepts]: Start accepts. Automaton has 35137 states and 99591 transitions. Word has length 146 [2022-01-18 12:13:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:27,011 INFO L470 AbstractCegarLoop]: Abstraction has 35137 states and 99591 transitions. [2022-01-18 12:13:27,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.117021276595745) internal successors, (387), 94 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 35137 states and 99591 transitions. [2022-01-18 12:13:27,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 12:13:27,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:27,055 INFO L514 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] [2022-01-18 12:13:27,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:27,256 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 [2022-01-18 12:13:27,256 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1750747461, now seen corresponding path program 12 times [2022-01-18 12:13:27,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:27,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767662555] [2022-01-18 12:13:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:27,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:28,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:28,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767662555] [2022-01-18 12:13:28,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767662555] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:28,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541567035] [2022-01-18 12:13:28,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:28,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:28,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:28,226 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:28,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 12:13:28,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:13:28,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:28,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-18 12:13:28,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:28,377 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 [2022-01-18 12:13:28,745 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:13:28,746 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 [2022-01-18 12:13:29,121 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 [2022-01-18 12:13:29,531 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 [2022-01-18 12:13:29,617 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 [2022-01-18 12:13:31,166 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 12:13:31,166 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 [2022-01-18 12:13:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:31,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:34,102 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:13:34,102 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 [2022-01-18 12:13:34,135 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:13:34,135 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 [2022-01-18 12:13:34,173 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:13:34,174 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 [2022-01-18 12:13:34,209 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 12:13:34,210 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 [2022-01-18 12:13:36,901 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 [2022-01-18 12:13:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:36,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541567035] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:36,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:36,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 39, 38] total 100 [2022-01-18 12:13:36,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268556631] [2022-01-18 12:13:36,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:36,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-18 12:13:36,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:36,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-18 12:13:36,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1250, Invalid=8593, Unknown=57, NotChecked=0, Total=9900 [2022-01-18 12:13:36,951 INFO L87 Difference]: Start difference. First operand 35137 states and 99591 transitions. Second operand has 100 states, 100 states have (on average 3.8) internal successors, (380), 100 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) Received shutdown request... [2022-01-18 12:15:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 795 states. [2022-01-18 12:15:28,977 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:15:28,978 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:15:29,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 268 SyntacticMatches, 5 SemanticMatches, 876 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354927 ImplicationChecksByTransitivity, 97.2s TimeCoverageRelationStatistics Valid=73814, Invalid=696134, Unknown=58, NotChecked=0, Total=770006 [2022-01-18 12:15:29,001 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 9810 mSDsluCounter, 33186 mSDsCounter, 0 mSdLazyCounter, 18992 mSolverCounterSat, 1348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9810 SdHoareTripleChecker+Valid, 32552 SdHoareTripleChecker+Invalid, 30121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1348 IncrementalHoareTripleChecker+Valid, 18992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9781 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:29,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9810 Valid, 32552 Invalid, 30121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1348 Valid, 18992 Invalid, 0 Unknown, 9781 Unchecked, 11.2s Time] [2022-01-18 12:15:29,002 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 12:15:29,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 12:15:29,205 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 [2022-01-18 12:15:29,205 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (35137states) and FLOYD_HOARE automaton (currently 795 states, 100 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 878 known predicates. [2022-01-18 12:15:29,207 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 12:15:29,207 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 12:15:29,209 INFO L732 BasicCegarLoop]: Path program histogram: [12, 3, 2, 1, 1, 1, 1] [2022-01-18 12:15:29,211 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 12:15:29,211 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 12:15:29,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 12:15:29 BasicIcfg [2022-01-18 12:15:29,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 12:15:29,213 INFO L158 Benchmark]: Toolchain (without parser) took 750622.06ms. Allocated memory was 343.9MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 290.7MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2022-01-18 12:15:29,213 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 307.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:15:29,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.26ms. Allocated memory is still 343.9MB. Free memory was 290.5MB in the beginning and 317.3MB in the end (delta: -26.8MB). Peak memory consumption was 17.1MB. Max. memory is 16.0GB. [2022-01-18 12:15:29,213 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.02ms. Allocated memory is still 343.9MB. Free memory was 317.3MB in the beginning and 315.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 12:15:29,213 INFO L158 Benchmark]: Boogie Preprocessor took 29.26ms. Allocated memory is still 343.9MB. Free memory was 315.3MB in the beginning and 314.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:15:29,213 INFO L158 Benchmark]: RCFGBuilder took 393.09ms. Allocated memory is still 343.9MB. Free memory was 314.1MB in the beginning and 296.8MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-18 12:15:29,214 INFO L158 Benchmark]: TraceAbstraction took 749896.15ms. Allocated memory was 343.9MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 296.0MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2022-01-18 12:15:29,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 307.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 261.26ms. Allocated memory is still 343.9MB. Free memory was 290.5MB in the beginning and 317.3MB in the end (delta: -26.8MB). Peak memory consumption was 17.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.02ms. Allocated memory is still 343.9MB. Free memory was 317.3MB in the beginning and 315.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.26ms. Allocated memory is still 343.9MB. Free memory was 315.3MB in the beginning and 314.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 393.09ms. Allocated memory is still 343.9MB. Free memory was 314.1MB in the beginning and 296.8MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 749896.15ms. Allocated memory was 343.9MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 296.0MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (35137states) and FLOYD_HOARE automaton (currently 795 states, 100 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 878 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 (35137states) and FLOYD_HOARE automaton (currently 795 states, 100 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 878 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 (35137states) and FLOYD_HOARE automaton (currently 795 states, 100 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 878 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: 749.8s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.7s, AutomataDifference: 590.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62681 SdHoareTripleChecker+Valid, 56.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62681 mSDsluCounter, 233418 SdHoareTripleChecker+Invalid, 48.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 69896 IncrementalHoareTripleChecker+Unchecked, 235109 mSDsCounter, 6366 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100881 IncrementalHoareTripleChecker+Invalid, 177143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6366 mSolverCounterUnsat, 6667 mSDtfsCounter, 100881 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9261 GetRequests, 3714 SyntacticMatches, 156 SemanticMatches, 5390 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1327212 ImplicationChecksByTransitivity, 543.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43804occurred in iteration=18, InterpolantAutomatonStates: 3801, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 330085 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 143.6s InterpolantComputationTime, 4866 NumberOfCodeBlocks, 4828 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 6926 ConstructedInterpolants, 569 QuantifiedInterpolants, 157778 SizeOfPredicates, 557 NumberOfNonLiveVariables, 4476 ConjunctsInSsa, 987 ConjunctsInUnsatCore, 51 InterpolantComputations, 6 PerfectInterpolantSequences, 159/1300 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