/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 01:27:27,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 01:27:27,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 01:27:27,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 01:27:27,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 01:27:27,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 01:27:27,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 01:27:27,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 01:27:27,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 01:27:27,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 01:27:27,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 01:27:27,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 01:27:27,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 01:27:27,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 01:27:27,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 01:27:27,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 01:27:27,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 01:27:27,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 01:27:27,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 01:27:27,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 01:27:27,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 01:27:27,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 01:27:27,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 01:27:27,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 01:27:27,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 01:27:27,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 01:27:27,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 01:27:27,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 01:27:27,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 01:27:27,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 01:27:27,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 01:27:27,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 01:27:27,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 01:27:27,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 01:27:27,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 01:27:27,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 01:27:27,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 01:27:27,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 01:27:27,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 01:27:27,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 01:27:27,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 01:27:27,355 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-PN-NoLbe.epf [2022-01-19 01:27:27,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 01:27:27,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 01:27:27,385 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 01:27:27,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 01:27:27,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 01:27:27,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 01:27:27,386 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 01:27:27,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 01:27:27,386 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 01:27:27,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 01:27:27,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 01:27:27,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 01:27:27,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 01:27:27,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 01:27:27,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 01:27:27,387 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 01:27:27,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 01:27:27,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 01:27:27,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 01:27:27,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 01:27:27,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 01:27:27,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 01:27:27,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 01:27:27,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:27:27,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 01:27:27,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 01:27:27,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 01:27:27,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 01:27:27,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 01:27:27,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 01:27:27,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 01:27:27,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 01:27:27,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 01:27:27,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 01:27:27,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 01:27:27,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 01:27:27,614 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 01:27:27,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-01-19 01:27:27,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/893aba9b8/035731b0cb1041ecab351c6ad642fbc8/FLAGb6d161efd [2022-01-19 01:27:28,083 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 01:27:28,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-01-19 01:27:28,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/893aba9b8/035731b0cb1041ecab351c6ad642fbc8/FLAGb6d161efd [2022-01-19 01:27:28,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/893aba9b8/035731b0cb1041ecab351c6ad642fbc8 [2022-01-19 01:27:28,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 01:27:28,102 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 01:27:28,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 01:27:28,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 01:27:28,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 01:27:28,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79efd06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28, skipping insertion in model container [2022-01-19 01:27:28,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 01:27:28,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 01:27:28,316 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-bad-commit-2.wvr-bad.c[6687,6700] [2022-01-19 01:27:28,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:27:28,328 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 01:27:28,356 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-bad-commit-2.wvr-bad.c[6687,6700] [2022-01-19 01:27:28,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:27:28,370 INFO L208 MainTranslator]: Completed translation [2022-01-19 01:27:28,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28 WrapperNode [2022-01-19 01:27:28,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 01:27:28,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 01:27:28,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 01:27:28,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 01:27:28,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,418 INFO L137 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 460 [2022-01-19 01:27:28,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 01:27:28,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 01:27:28,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 01:27:28,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 01:27:28,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 01:27:28,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 01:27:28,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 01:27:28,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 01:27:28,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (1/1) ... [2022-01-19 01:27:28,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:27:28,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:27:28,516 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) [2022-01-19 01:27:28,529 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 [2022-01-19 01:27:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 01:27:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 01:27:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 01:27:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 01:27:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 01:27:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 01:27:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 01:27:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 01:27:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 01:27:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 01:27:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 01:27:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 01:27:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 01:27:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 01:27:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 01:27:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 01:27:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 01:27:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 01:27:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 01:27:28,563 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 01:27:28,697 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 01:27:28,698 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 01:27:29,108 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 01:27:29,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 01:27:29,331 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-19 01:27:29,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:27:29 BoogieIcfgContainer [2022-01-19 01:27:29,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 01:27:29,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 01:27:29,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 01:27:29,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 01:27:29,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:27:28" (1/3) ... [2022-01-19 01:27:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5a5731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:27:29, skipping insertion in model container [2022-01-19 01:27:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:27:28" (2/3) ... [2022-01-19 01:27:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5a5731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:27:29, skipping insertion in model container [2022-01-19 01:27:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:27:29" (3/3) ... [2022-01-19 01:27:29,342 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-01-19 01:27:29,347 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 01:27:29,347 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 01:27:29,347 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 01:27:29,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,425 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,425 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,425 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,425 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,426 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,426 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,447 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,448 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,448 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,448 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,448 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,448 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,448 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,448 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,449 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,449 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,449 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,449 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,449 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,449 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,449 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,450 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,450 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,450 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,450 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,450 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,451 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,451 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,451 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,451 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,451 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,451 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,451 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,452 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,455 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,455 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,457 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,460 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,460 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,460 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,460 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,461 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,461 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,461 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,461 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,461 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,461 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,462 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,462 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,462 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,462 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,462 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,464 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:27:29,468 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-19 01:27:29,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 01:27:29,524 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=false, mAutomataTypeConcurrency=PETRI_NET, 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 [2022-01-19 01:27:29,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 01:27:29,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 332 places, 356 transitions, 744 flow [2022-01-19 01:27:29,673 INFO L129 PetriNetUnfolder]: 37/352 cut-off events. [2022-01-19 01:27:29,673 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 01:27:29,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 352 events. 37/352 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 308. Up to 8 conditions per place. [2022-01-19 01:27:29,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 356 transitions, 744 flow [2022-01-19 01:27:29,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 339 transitions, 702 flow [2022-01-19 01:27:29,743 INFO L129 PetriNetUnfolder]: 37/338 cut-off events. [2022-01-19 01:27:29,743 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 01:27:29,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:29,745 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:29,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:29,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:29,751 INFO L85 PathProgramCache]: Analyzing trace with hash -768917108, now seen corresponding path program 1 times [2022-01-19 01:27:29,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:29,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277066063] [2022-01-19 01:27:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:29,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:30,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:30,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277066063] [2022-01-19 01:27:30,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277066063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:30,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:30,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 01:27:30,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442037737] [2022-01-19 01:27:30,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:30,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 01:27:30,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:30,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 01:27:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 01:27:30,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 356 [2022-01-19 01:27:30,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 339 transitions, 702 flow. Second operand has 2 states, 2 states have (on average 325.0) internal successors, (650), 2 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:30,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 356 [2022-01-19 01:27:30,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:30,217 INFO L129 PetriNetUnfolder]: 56/358 cut-off events. [2022-01-19 01:27:30,217 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 01:27:30,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 358 events. 56/358 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 263 event pairs, 0 based on Foata normal form. 29/355 useless extension candidates. Maximal degree in co-relation 334. Up to 57 conditions per place. [2022-01-19 01:27:30,223 INFO L132 encePairwiseOnDemand]: 339/356 looper letters, 20 selfloop transitions, 0 changer transitions 9/322 dead transitions. [2022-01-19 01:27:30,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 322 transitions, 708 flow [2022-01-19 01:27:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 01:27:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 01:27:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 673 transitions. [2022-01-19 01:27:30,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9452247191011236 [2022-01-19 01:27:30,243 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 673 transitions. [2022-01-19 01:27:30,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 673 transitions. [2022-01-19 01:27:30,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:30,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 673 transitions. [2022-01-19 01:27:30,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 336.5) internal successors, (673), 2 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,262 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,264 INFO L186 Difference]: Start difference. First operand has 315 places, 339 transitions, 702 flow. Second operand 2 states and 673 transitions. [2022-01-19 01:27:30,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 322 transitions, 708 flow [2022-01-19 01:27:30,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 322 transitions, 692 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 01:27:30,278 INFO L242 Difference]: Finished difference. Result has 308 places, 313 transitions, 634 flow [2022-01-19 01:27:30,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=634, PETRI_PLACES=308, PETRI_TRANSITIONS=313} [2022-01-19 01:27:30,287 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -7 predicate places. [2022-01-19 01:27:30,287 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 313 transitions, 634 flow [2022-01-19 01:27:30,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 325.0) internal successors, (650), 2 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:30,288 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:30,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 01:27:30,289 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:30,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash 130691898, now seen corresponding path program 1 times [2022-01-19 01:27:30,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:30,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086283532] [2022-01-19 01:27:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:30,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:30,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:30,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086283532] [2022-01-19 01:27:30,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086283532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:30,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:30,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 01:27:30,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659297513] [2022-01-19 01:27:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:30,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 01:27:30,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 01:27:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:27:30,657 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 356 [2022-01-19 01:27:30,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 313 transitions, 634 flow. Second operand has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:30,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 356 [2022-01-19 01:27:30,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:30,844 INFO L129 PetriNetUnfolder]: 107/476 cut-off events. [2022-01-19 01:27:30,844 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-01-19 01:27:30,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 476 events. 107/476 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 711 event pairs, 0 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 635. Up to 85 conditions per place. [2022-01-19 01:27:30,849 INFO L132 encePairwiseOnDemand]: 346/356 looper letters, 69 selfloop transitions, 7 changer transitions 4/335 dead transitions. [2022-01-19 01:27:30,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 335 transitions, 845 flow [2022-01-19 01:27:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 01:27:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 01:27:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1436 transitions. [2022-01-19 01:27:30,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8067415730337079 [2022-01-19 01:27:30,853 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1436 transitions. [2022-01-19 01:27:30,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1436 transitions. [2022-01-19 01:27:30,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:30,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1436 transitions. [2022-01-19 01:27:30,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.2) internal successors, (1436), 5 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,861 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,861 INFO L186 Difference]: Start difference. First operand has 308 places, 313 transitions, 634 flow. Second operand 5 states and 1436 transitions. [2022-01-19 01:27:30,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 335 transitions, 845 flow [2022-01-19 01:27:30,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 335 transitions, 845 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 01:27:30,870 INFO L242 Difference]: Finished difference. Result has 306 places, 319 transitions, 685 flow [2022-01-19 01:27:30,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=685, PETRI_PLACES=306, PETRI_TRANSITIONS=319} [2022-01-19 01:27:30,871 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -9 predicate places. [2022-01-19 01:27:30,871 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 319 transitions, 685 flow [2022-01-19 01:27:30,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:30,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:30,872 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:30,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 01:27:30,872 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2069722549, now seen corresponding path program 1 times [2022-01-19 01:27:30,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:30,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841889827] [2022-01-19 01:27:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:30,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:31,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:31,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841889827] [2022-01-19 01:27:31,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841889827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:31,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:31,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:31,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935969435] [2022-01-19 01:27:31,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:31,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:31,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:31,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:31,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2022-01-19 01:27:31,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 319 transitions, 685 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:31,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2022-01-19 01:27:31,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:31,237 INFO L129 PetriNetUnfolder]: 171/648 cut-off events. [2022-01-19 01:27:31,238 INFO L130 PetriNetUnfolder]: For 86/90 co-relation queries the response was YES. [2022-01-19 01:27:31,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 648 events. 171/648 cut-off events. For 86/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1492 event pairs, 3 based on Foata normal form. 19/590 useless extension candidates. Maximal degree in co-relation 947. Up to 124 conditions per place. [2022-01-19 01:27:31,247 INFO L132 encePairwiseOnDemand]: 349/356 looper letters, 44 selfloop transitions, 4 changer transitions 0/337 dead transitions. [2022-01-19 01:27:31,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 337 transitions, 838 flow [2022-01-19 01:27:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 984 transitions. [2022-01-19 01:27:31,250 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9213483146067416 [2022-01-19 01:27:31,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 984 transitions. [2022-01-19 01:27:31,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 984 transitions. [2022-01-19 01:27:31,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:31,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 984 transitions. [2022-01-19 01:27:31,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,255 INFO L186 Difference]: Start difference. First operand has 306 places, 319 transitions, 685 flow. Second operand 3 states and 984 transitions. [2022-01-19 01:27:31,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 337 transitions, 838 flow [2022-01-19 01:27:31,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 337 transitions, 824 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 01:27:31,262 INFO L242 Difference]: Finished difference. Result has 304 places, 322 transitions, 710 flow [2022-01-19 01:27:31,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=710, PETRI_PLACES=304, PETRI_TRANSITIONS=322} [2022-01-19 01:27:31,265 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -11 predicate places. [2022-01-19 01:27:31,265 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 322 transitions, 710 flow [2022-01-19 01:27:31,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,266 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:31,266 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:31,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 01:27:31,266 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:31,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2137770165, now seen corresponding path program 1 times [2022-01-19 01:27:31,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:31,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17740292] [2022-01-19 01:27:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:31,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:31,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:31,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17740292] [2022-01-19 01:27:31,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17740292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:31,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:31,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:31,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107134296] [2022-01-19 01:27:31,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:31,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:31,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:31,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:31,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:31,423 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2022-01-19 01:27:31,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 322 transitions, 710 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:31,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2022-01-19 01:27:31,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:31,682 INFO L129 PetriNetUnfolder]: 317/1067 cut-off events. [2022-01-19 01:27:31,682 INFO L130 PetriNetUnfolder]: For 278/288 co-relation queries the response was YES. [2022-01-19 01:27:31,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 1067 events. 317/1067 cut-off events. For 278/288 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4030 event pairs, 15 based on Foata normal form. 15/925 useless extension candidates. Maximal degree in co-relation 1725. Up to 194 conditions per place. [2022-01-19 01:27:31,698 INFO L132 encePairwiseOnDemand]: 353/356 looper letters, 57 selfloop transitions, 2 changer transitions 0/348 dead transitions. [2022-01-19 01:27:31,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 348 transitions, 934 flow [2022-01-19 01:27:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2022-01-19 01:27:31,701 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9222846441947565 [2022-01-19 01:27:31,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2022-01-19 01:27:31,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2022-01-19 01:27:31,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:31,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2022-01-19 01:27:31,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,707 INFO L186 Difference]: Start difference. First operand has 304 places, 322 transitions, 710 flow. Second operand 3 states and 985 transitions. [2022-01-19 01:27:31,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 348 transitions, 934 flow [2022-01-19 01:27:31,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 348 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 01:27:31,714 INFO L242 Difference]: Finished difference. Result has 306 places, 323 transitions, 720 flow [2022-01-19 01:27:31,714 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=720, PETRI_PLACES=306, PETRI_TRANSITIONS=323} [2022-01-19 01:27:31,716 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -9 predicate places. [2022-01-19 01:27:31,716 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 323 transitions, 720 flow [2022-01-19 01:27:31,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,717 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:31,717 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:31,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 01:27:31,718 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:31,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1331819937, now seen corresponding path program 1 times [2022-01-19 01:27:31,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:31,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785373073] [2022-01-19 01:27:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:31,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:31,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:31,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785373073] [2022-01-19 01:27:31,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785373073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:31,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:31,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:31,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258199708] [2022-01-19 01:27:31,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:31,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:31,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:31,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:31,847 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2022-01-19 01:27:31,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 323 transitions, 720 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:31,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:31,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2022-01-19 01:27:31,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:32,191 INFO L129 PetriNetUnfolder]: 579/1866 cut-off events. [2022-01-19 01:27:32,191 INFO L130 PetriNetUnfolder]: For 684/700 co-relation queries the response was YES. [2022-01-19 01:27:32,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 1866 events. 579/1866 cut-off events. For 684/700 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10159 event pairs, 29 based on Foata normal form. 33/1568 useless extension candidates. Maximal degree in co-relation 3112. Up to 363 conditions per place. [2022-01-19 01:27:32,221 INFO L132 encePairwiseOnDemand]: 353/356 looper letters, 59 selfloop transitions, 2 changer transitions 0/350 dead transitions. [2022-01-19 01:27:32,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 350 transitions, 956 flow [2022-01-19 01:27:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2022-01-19 01:27:32,224 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9222846441947565 [2022-01-19 01:27:32,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2022-01-19 01:27:32,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2022-01-19 01:27:32,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:32,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2022-01-19 01:27:32,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,229 INFO L186 Difference]: Start difference. First operand has 306 places, 323 transitions, 720 flow. Second operand 3 states and 985 transitions. [2022-01-19 01:27:32,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 350 transitions, 956 flow [2022-01-19 01:27:32,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 350 transitions, 953 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 01:27:32,242 INFO L242 Difference]: Finished difference. Result has 308 places, 324 transitions, 732 flow [2022-01-19 01:27:32,242 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=732, PETRI_PLACES=308, PETRI_TRANSITIONS=324} [2022-01-19 01:27:32,245 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -7 predicate places. [2022-01-19 01:27:32,245 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 324 transitions, 732 flow [2022-01-19 01:27:32,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:32,246 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:32,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 01:27:32,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:32,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1308273172, now seen corresponding path program 1 times [2022-01-19 01:27:32,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:32,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613703707] [2022-01-19 01:27:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:32,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:32,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:32,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613703707] [2022-01-19 01:27:32,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613703707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:32,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:32,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:32,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597733652] [2022-01-19 01:27:32,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:32,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:32,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:32,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:32,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:32,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2022-01-19 01:27:32,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 324 transitions, 732 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:32,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2022-01-19 01:27:32,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:32,852 INFO L129 PetriNetUnfolder]: 1212/3067 cut-off events. [2022-01-19 01:27:32,852 INFO L130 PetriNetUnfolder]: For 1592/1718 co-relation queries the response was YES. [2022-01-19 01:27:32,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5817 conditions, 3067 events. 1212/3067 cut-off events. For 1592/1718 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18739 event pairs, 155 based on Foata normal form. 27/2525 useless extension candidates. Maximal degree in co-relation 5809. Up to 847 conditions per place. [2022-01-19 01:27:32,906 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 52 selfloop transitions, 6 changer transitions 0/346 dead transitions. [2022-01-19 01:27:32,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 346 transitions, 949 flow [2022-01-19 01:27:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2022-01-19 01:27:32,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176029962546817 [2022-01-19 01:27:32,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2022-01-19 01:27:32,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2022-01-19 01:27:32,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:32,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2022-01-19 01:27:32,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,914 INFO L186 Difference]: Start difference. First operand has 308 places, 324 transitions, 732 flow. Second operand 3 states and 980 transitions. [2022-01-19 01:27:32,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 346 transitions, 949 flow [2022-01-19 01:27:32,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 346 transitions, 946 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 01:27:32,924 INFO L242 Difference]: Finished difference. Result has 311 places, 325 transitions, 760 flow [2022-01-19 01:27:32,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=311, PETRI_TRANSITIONS=325} [2022-01-19 01:27:32,926 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -4 predicate places. [2022-01-19 01:27:32,926 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 325 transitions, 760 flow [2022-01-19 01:27:32,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:32,927 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:32,927 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:32,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 01:27:32,927 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:32,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1010840920, now seen corresponding path program 1 times [2022-01-19 01:27:32,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:32,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187773304] [2022-01-19 01:27:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:32,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:27:33,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:33,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187773304] [2022-01-19 01:27:33,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187773304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:33,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:33,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 01:27:33,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607057704] [2022-01-19 01:27:33,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:33,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 01:27:33,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 01:27:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 01:27:33,040 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 356 [2022-01-19 01:27:33,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 325 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:33,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:33,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 356 [2022-01-19 01:27:33,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:33,656 INFO L129 PetriNetUnfolder]: 807/2922 cut-off events. [2022-01-19 01:27:33,656 INFO L130 PetriNetUnfolder]: For 1978/2167 co-relation queries the response was YES. [2022-01-19 01:27:33,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 2922 events. 807/2922 cut-off events. For 1978/2167 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18611 event pairs, 117 based on Foata normal form. 95/2491 useless extension candidates. Maximal degree in co-relation 5123. Up to 794 conditions per place. [2022-01-19 01:27:33,700 INFO L132 encePairwiseOnDemand]: 344/356 looper letters, 128 selfloop transitions, 11 changer transitions 0/383 dead transitions. [2022-01-19 01:27:33,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 383 transitions, 1186 flow [2022-01-19 01:27:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 01:27:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 01:27:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2539 transitions. [2022-01-19 01:27:33,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7924469413233458 [2022-01-19 01:27:33,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2539 transitions. [2022-01-19 01:27:33,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2539 transitions. [2022-01-19 01:27:33,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:33,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2539 transitions. [2022-01-19 01:27:33,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 282.1111111111111) internal successors, (2539), 9 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:33,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:33,716 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:33,716 INFO L186 Difference]: Start difference. First operand has 311 places, 325 transitions, 760 flow. Second operand 9 states and 2539 transitions. [2022-01-19 01:27:33,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 383 transitions, 1186 flow [2022-01-19 01:27:33,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 383 transitions, 1174 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:27:33,724 INFO L242 Difference]: Finished difference. Result has 319 places, 329 transitions, 794 flow [2022-01-19 01:27:33,725 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=794, PETRI_PLACES=319, PETRI_TRANSITIONS=329} [2022-01-19 01:27:33,725 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 4 predicate places. [2022-01-19 01:27:33,726 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 329 transitions, 794 flow [2022-01-19 01:27:33,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:33,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:33,727 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:33,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 01:27:33,727 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash -661414508, now seen corresponding path program 1 times [2022-01-19 01:27:33,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:33,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938593528] [2022-01-19 01:27:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:33,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:27:33,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:33,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938593528] [2022-01-19 01:27:33,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938593528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:33,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:33,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:33,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888645348] [2022-01-19 01:27:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:33,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:33,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:33,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2022-01-19 01:27:33,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 329 transitions, 794 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:33,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:33,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2022-01-19 01:27:33,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:34,208 INFO L129 PetriNetUnfolder]: 1134/2460 cut-off events. [2022-01-19 01:27:34,208 INFO L130 PetriNetUnfolder]: For 2038/2205 co-relation queries the response was YES. [2022-01-19 01:27:34,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5571 conditions, 2460 events. 1134/2460 cut-off events. For 2038/2205 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10131 event pairs, 43 based on Foata normal form. 2/2251 useless extension candidates. Maximal degree in co-relation 5560. Up to 1047 conditions per place. [2022-01-19 01:27:34,243 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 48 selfloop transitions, 5 changer transitions 3/338 dead transitions. [2022-01-19 01:27:34,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 338 transitions, 928 flow [2022-01-19 01:27:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:34,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-01-19 01:27:34,246 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2022-01-19 01:27:34,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-01-19 01:27:34,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-01-19 01:27:34,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:34,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-01-19 01:27:34,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:34,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:34,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:34,250 INFO L186 Difference]: Start difference. First operand has 319 places, 329 transitions, 794 flow. Second operand 3 states and 962 transitions. [2022-01-19 01:27:34,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 338 transitions, 928 flow [2022-01-19 01:27:34,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 338 transitions, 919 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 01:27:34,257 INFO L242 Difference]: Finished difference. Result has 320 places, 323 transitions, 774 flow [2022-01-19 01:27:34,258 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=774, PETRI_PLACES=320, PETRI_TRANSITIONS=323} [2022-01-19 01:27:34,259 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 5 predicate places. [2022-01-19 01:27:34,260 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 323 transitions, 774 flow [2022-01-19 01:27:34,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:34,260 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:34,260 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:34,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 01:27:34,261 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1101377145, now seen corresponding path program 1 times [2022-01-19 01:27:34,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:34,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797893309] [2022-01-19 01:27:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:34,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:34,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:34,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797893309] [2022-01-19 01:27:34,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797893309] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:27:34,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696275803] [2022-01-19 01:27:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:34,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:27:34,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:27:34,947 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) [2022-01-19 01:27:34,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 01:27:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:35,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-19 01:27:35,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:27:35,275 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 [2022-01-19 01:27:35,331 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 01:27:35,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-19 01:27:36,192 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 01:27:36,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-01-19 01:27:36,503 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 [2022-01-19 01:27:38,724 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 [2022-01-19 01:27:38,837 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 [2022-01-19 01:27:38,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-01-19 01:27:39,011 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 [2022-01-19 01:27:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:39,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:27:41,387 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:27:41,388 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 67 treesize of output 56 [2022-01-19 01:27:41,399 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 01:27:41,400 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 798 treesize of output 773 [2022-01-19 01:27:41,417 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:27:41,417 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 766 treesize of output 574 [2022-01-19 01:27:41,431 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:27:41,431 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 574 treesize of output 526 [2022-01-19 01:27:41,443 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:27:41,443 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 526 treesize of output 430 [2022-01-19 01:27:41,457 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:27:41,457 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 226 treesize of output 202 [2022-01-19 01:27:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:27:42,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696275803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:27:42,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:27:42,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30, 25] total 65 [2022-01-19 01:27:42,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97699424] [2022-01-19 01:27:42,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:27:42,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-19 01:27:42,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:42,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-19 01:27:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=737, Invalid=3310, Unknown=113, NotChecked=0, Total=4160 [2022-01-19 01:27:42,905 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 356 [2022-01-19 01:27:42,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 323 transitions, 774 flow. Second operand has 65 states, 65 states have (on average 174.26153846153846) internal successors, (11327), 65 states have internal predecessors, (11327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:42,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:42,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 356 [2022-01-19 01:27:42,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:48,688 INFO L129 PetriNetUnfolder]: 3870/10455 cut-off events. [2022-01-19 01:27:48,688 INFO L130 PetriNetUnfolder]: For 8394/9180 co-relation queries the response was YES. [2022-01-19 01:27:48,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22387 conditions, 10455 events. 3870/10455 cut-off events. For 8394/9180 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 89557 event pairs, 22 based on Foata normal form. 48/9205 useless extension candidates. Maximal degree in co-relation 22375. Up to 2245 conditions per place. [2022-01-19 01:27:48,850 INFO L132 encePairwiseOnDemand]: 314/356 looper letters, 379 selfloop transitions, 83 changer transitions 16/641 dead transitions. [2022-01-19 01:27:48,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 641 transitions, 2793 flow [2022-01-19 01:27:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-19 01:27:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-01-19 01:27:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 8407 transitions. [2022-01-19 01:27:48,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5024503944537413 [2022-01-19 01:27:48,869 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 8407 transitions. [2022-01-19 01:27:48,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 8407 transitions. [2022-01-19 01:27:48,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:48,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 8407 transitions. [2022-01-19 01:27:48,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 178.87234042553192) internal successors, (8407), 47 states have internal predecessors, (8407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:48,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 356.0) internal successors, (17088), 48 states have internal predecessors, (17088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:48,912 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 356.0) internal successors, (17088), 48 states have internal predecessors, (17088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:48,912 INFO L186 Difference]: Start difference. First operand has 320 places, 323 transitions, 774 flow. Second operand 47 states and 8407 transitions. [2022-01-19 01:27:48,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 641 transitions, 2793 flow [2022-01-19 01:27:48,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 641 transitions, 2728 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-01-19 01:27:48,985 INFO L242 Difference]: Finished difference. Result has 379 places, 382 transitions, 1405 flow [2022-01-19 01:27:48,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1405, PETRI_PLACES=379, PETRI_TRANSITIONS=382} [2022-01-19 01:27:48,986 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 64 predicate places. [2022-01-19 01:27:48,986 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 382 transitions, 1405 flow [2022-01-19 01:27:48,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 174.26153846153846) internal successors, (11327), 65 states have internal predecessors, (11327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:48,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:48,989 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:49,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 01:27:49,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:27:49,213 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:49,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:49,213 INFO L85 PathProgramCache]: Analyzing trace with hash 97707508, now seen corresponding path program 1 times [2022-01-19 01:27:49,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:49,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559521864] [2022-01-19 01:27:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:49,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:27:49,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:49,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559521864] [2022-01-19 01:27:49,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559521864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:49,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:49,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:49,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114579444] [2022-01-19 01:27:49,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:49,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:49,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:49,294 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2022-01-19 01:27:49,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 382 transitions, 1405 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:49,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:49,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2022-01-19 01:27:49,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:51,051 INFO L129 PetriNetUnfolder]: 4120/11145 cut-off events. [2022-01-19 01:27:51,051 INFO L130 PetriNetUnfolder]: For 36163/38111 co-relation queries the response was YES. [2022-01-19 01:27:51,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31381 conditions, 11145 events. 4120/11145 cut-off events. For 36163/38111 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 101607 event pairs, 547 based on Foata normal form. 63/9597 useless extension candidates. Maximal degree in co-relation 31350. Up to 3185 conditions per place. [2022-01-19 01:27:51,345 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 97 selfloop transitions, 8 changer transitions 0/407 dead transitions. [2022-01-19 01:27:51,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 407 transitions, 1803 flow [2022-01-19 01:27:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2022-01-19 01:27:51,348 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9185393258426966 [2022-01-19 01:27:51,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2022-01-19 01:27:51,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2022-01-19 01:27:51,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:51,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2022-01-19 01:27:51,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:51,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:51,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:51,352 INFO L186 Difference]: Start difference. First operand has 379 places, 382 transitions, 1405 flow. Second operand 3 states and 981 transitions. [2022-01-19 01:27:51,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 407 transitions, 1803 flow [2022-01-19 01:27:51,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 407 transitions, 1703 flow, removed 31 selfloop flow, removed 23 redundant places. [2022-01-19 01:27:51,433 INFO L242 Difference]: Finished difference. Result has 354 places, 378 transitions, 1316 flow [2022-01-19 01:27:51,434 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1316, PETRI_PLACES=354, PETRI_TRANSITIONS=378} [2022-01-19 01:27:51,434 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 39 predicate places. [2022-01-19 01:27:51,435 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 378 transitions, 1316 flow [2022-01-19 01:27:51,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:51,435 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:51,435 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:51,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 01:27:51,436 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2106631031, now seen corresponding path program 1 times [2022-01-19 01:27:51,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:51,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115899914] [2022-01-19 01:27:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:51,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:27:51,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:51,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115899914] [2022-01-19 01:27:51,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115899914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:51,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:51,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:51,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364184986] [2022-01-19 01:27:51,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:51,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:51,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:51,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:51,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2022-01-19 01:27:51,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 378 transitions, 1316 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:51,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:51,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2022-01-19 01:27:51,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:53,658 INFO L129 PetriNetUnfolder]: 5140/14798 cut-off events. [2022-01-19 01:27:53,658 INFO L130 PetriNetUnfolder]: For 50523/53873 co-relation queries the response was YES. [2022-01-19 01:27:53,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40688 conditions, 14798 events. 5140/14798 cut-off events. For 50523/53873 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 151297 event pairs, 898 based on Foata normal form. 48/12919 useless extension candidates. Maximal degree in co-relation 40662. Up to 3930 conditions per place. [2022-01-19 01:27:53,942 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 88 selfloop transitions, 8 changer transitions 0/399 dead transitions. [2022-01-19 01:27:53,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 399 transitions, 1677 flow [2022-01-19 01:27:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2022-01-19 01:27:53,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176029962546817 [2022-01-19 01:27:53,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2022-01-19 01:27:53,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2022-01-19 01:27:53,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:53,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2022-01-19 01:27:53,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:53,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:53,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:53,949 INFO L186 Difference]: Start difference. First operand has 354 places, 378 transitions, 1316 flow. Second operand 3 states and 980 transitions. [2022-01-19 01:27:53,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 399 transitions, 1677 flow [2022-01-19 01:27:53,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 399 transitions, 1641 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-01-19 01:27:53,998 INFO L242 Difference]: Finished difference. Result has 356 places, 371 transitions, 1267 flow [2022-01-19 01:27:53,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1267, PETRI_PLACES=356, PETRI_TRANSITIONS=371} [2022-01-19 01:27:53,999 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 41 predicate places. [2022-01-19 01:27:53,999 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 371 transitions, 1267 flow [2022-01-19 01:27:54,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:54,000 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:54,000 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:54,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 01:27:54,000 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1922442760, now seen corresponding path program 1 times [2022-01-19 01:27:54,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:54,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556777246] [2022-01-19 01:27:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:54,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 01:27:54,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:54,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556777246] [2022-01-19 01:27:54,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556777246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:54,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:54,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:54,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172033446] [2022-01-19 01:27:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:54,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:54,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:54,112 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2022-01-19 01:27:54,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 371 transitions, 1267 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:54,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:54,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2022-01-19 01:27:54,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:55,780 INFO L129 PetriNetUnfolder]: 2800/10024 cut-off events. [2022-01-19 01:27:55,781 INFO L130 PetriNetUnfolder]: For 39624/41356 co-relation queries the response was YES. [2022-01-19 01:27:55,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27621 conditions, 10024 events. 2800/10024 cut-off events. For 39624/41356 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 99102 event pairs, 271 based on Foata normal form. 189/9087 useless extension candidates. Maximal degree in co-relation 27594. Up to 2733 conditions per place. [2022-01-19 01:27:55,899 INFO L132 encePairwiseOnDemand]: 353/356 looper letters, 96 selfloop transitions, 2 changer transitions 0/403 dead transitions. [2022-01-19 01:27:55,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 403 transitions, 1737 flow [2022-01-19 01:27:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2022-01-19 01:27:55,902 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9194756554307116 [2022-01-19 01:27:55,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2022-01-19 01:27:55,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2022-01-19 01:27:55,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:55,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2022-01-19 01:27:55,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:55,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:55,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:55,906 INFO L186 Difference]: Start difference. First operand has 356 places, 371 transitions, 1267 flow. Second operand 3 states and 982 transitions. [2022-01-19 01:27:55,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 403 transitions, 1737 flow [2022-01-19 01:27:55,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 403 transitions, 1697 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-01-19 01:27:55,969 INFO L242 Difference]: Finished difference. Result has 354 places, 366 transitions, 1210 flow [2022-01-19 01:27:55,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1210, PETRI_PLACES=354, PETRI_TRANSITIONS=366} [2022-01-19 01:27:55,970 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 39 predicate places. [2022-01-19 01:27:55,970 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 366 transitions, 1210 flow [2022-01-19 01:27:55,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:55,970 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:55,971 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:55,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 01:27:55,971 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 801453710, now seen corresponding path program 2 times [2022-01-19 01:27:55,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:55,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795196188] [2022-01-19 01:27:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:55,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:27:56,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:56,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795196188] [2022-01-19 01:27:56,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795196188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:56,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:56,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:56,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743048750] [2022-01-19 01:27:56,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:56,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:56,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:56,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:56,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:56,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2022-01-19 01:27:56,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 366 transitions, 1210 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:56,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:56,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2022-01-19 01:27:56,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:58,621 INFO L129 PetriNetUnfolder]: 6436/15814 cut-off events. [2022-01-19 01:27:58,622 INFO L130 PetriNetUnfolder]: For 83527/86511 co-relation queries the response was YES. [2022-01-19 01:27:58,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55326 conditions, 15814 events. 6436/15814 cut-off events. For 83527/86511 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 143931 event pairs, 649 based on Foata normal form. 12/13990 useless extension candidates. Maximal degree in co-relation 55299. Up to 6079 conditions per place. [2022-01-19 01:27:59,000 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 82 selfloop transitions, 12 changer transitions 0/389 dead transitions. [2022-01-19 01:27:59,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 389 transitions, 1598 flow [2022-01-19 01:27:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:27:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:27:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-01-19 01:27:59,003 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2022-01-19 01:27:59,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-01-19 01:27:59,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-01-19 01:27:59,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:27:59,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-01-19 01:27:59,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:59,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:59,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:59,007 INFO L186 Difference]: Start difference. First operand has 354 places, 366 transitions, 1210 flow. Second operand 3 states and 962 transitions. [2022-01-19 01:27:59,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 389 transitions, 1598 flow [2022-01-19 01:27:59,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 389 transitions, 1596 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 01:27:59,036 INFO L242 Difference]: Finished difference. Result has 357 places, 367 transitions, 1264 flow [2022-01-19 01:27:59,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1264, PETRI_PLACES=357, PETRI_TRANSITIONS=367} [2022-01-19 01:27:59,036 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 42 predicate places. [2022-01-19 01:27:59,037 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 367 transitions, 1264 flow [2022-01-19 01:27:59,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:59,037 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:27:59,037 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:27:59,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 01:27:59,037 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:27:59,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:27:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -449639935, now seen corresponding path program 1 times [2022-01-19 01:27:59,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:27:59,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487093473] [2022-01-19 01:27:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:27:59,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:27:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:27:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 01:27:59,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:27:59,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487093473] [2022-01-19 01:27:59,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487093473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:27:59,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:27:59,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:27:59,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397346613] [2022-01-19 01:27:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:27:59,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:27:59,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:27:59,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:27:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:27:59,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2022-01-19 01:27:59,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 367 transitions, 1264 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:27:59,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:27:59,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2022-01-19 01:27:59,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:28:01,339 INFO L129 PetriNetUnfolder]: 6024/14711 cut-off events. [2022-01-19 01:28:01,339 INFO L130 PetriNetUnfolder]: For 80586/83401 co-relation queries the response was YES. [2022-01-19 01:28:01,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52706 conditions, 14711 events. 6024/14711 cut-off events. For 80586/83401 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 128433 event pairs, 675 based on Foata normal form. 116/13413 useless extension candidates. Maximal degree in co-relation 52678. Up to 5600 conditions per place. [2022-01-19 01:28:01,702 INFO L132 encePairwiseOnDemand]: 350/356 looper letters, 91 selfloop transitions, 5 changer transitions 0/391 dead transitions. [2022-01-19 01:28:01,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 391 transitions, 1660 flow [2022-01-19 01:28:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:28:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:28:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 964 transitions. [2022-01-19 01:28:01,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9026217228464419 [2022-01-19 01:28:01,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 964 transitions. [2022-01-19 01:28:01,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 964 transitions. [2022-01-19 01:28:01,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:28:01,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 964 transitions. [2022-01-19 01:28:01,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:01,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:01,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:01,710 INFO L186 Difference]: Start difference. First operand has 357 places, 367 transitions, 1264 flow. Second operand 3 states and 964 transitions. [2022-01-19 01:28:01,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 391 transitions, 1660 flow [2022-01-19 01:28:01,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 391 transitions, 1636 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:28:01,745 INFO L242 Difference]: Finished difference. Result has 359 places, 368 transitions, 1270 flow [2022-01-19 01:28:01,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1270, PETRI_PLACES=359, PETRI_TRANSITIONS=368} [2022-01-19 01:28:01,746 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 44 predicate places. [2022-01-19 01:28:01,746 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 368 transitions, 1270 flow [2022-01-19 01:28:01,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:01,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:28:01,747 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:28:01,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 01:28:01,747 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:28:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:28:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1213959807, now seen corresponding path program 1 times [2022-01-19 01:28:01,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:28:01,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371380535] [2022-01-19 01:28:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:28:01,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:28:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:28:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 01:28:01,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:28:01,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371380535] [2022-01-19 01:28:01,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371380535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:28:01,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:28:01,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 01:28:01,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344521547] [2022-01-19 01:28:01,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:28:01,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 01:28:01,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:28:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 01:28:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 01:28:01,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 356 [2022-01-19 01:28:01,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 368 transitions, 1270 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:01,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:28:01,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 356 [2022-01-19 01:28:01,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:28:03,725 INFO L129 PetriNetUnfolder]: 2938/10745 cut-off events. [2022-01-19 01:28:03,725 INFO L130 PetriNetUnfolder]: For 34250/35918 co-relation queries the response was YES. [2022-01-19 01:28:03,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29472 conditions, 10745 events. 2938/10745 cut-off events. For 34250/35918 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 104281 event pairs, 437 based on Foata normal form. 3/9535 useless extension candidates. Maximal degree in co-relation 29443. Up to 3534 conditions per place. [2022-01-19 01:28:03,821 INFO L132 encePairwiseOnDemand]: 346/356 looper letters, 110 selfloop transitions, 8 changer transitions 29/401 dead transitions. [2022-01-19 01:28:03,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 401 transitions, 1704 flow [2022-01-19 01:28:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 01:28:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 01:28:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2510 transitions. [2022-01-19 01:28:03,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833957553058677 [2022-01-19 01:28:03,826 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2510 transitions. [2022-01-19 01:28:03,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2510 transitions. [2022-01-19 01:28:03,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:28:03,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2510 transitions. [2022-01-19 01:28:03,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 278.8888888888889) internal successors, (2510), 9 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:03,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:03,837 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:03,837 INFO L186 Difference]: Start difference. First operand has 359 places, 368 transitions, 1270 flow. Second operand 9 states and 2510 transitions. [2022-01-19 01:28:03,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 401 transitions, 1704 flow [2022-01-19 01:28:03,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 401 transitions, 1694 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:28:03,862 INFO L242 Difference]: Finished difference. Result has 367 places, 369 transitions, 1288 flow [2022-01-19 01:28:03,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1288, PETRI_PLACES=367, PETRI_TRANSITIONS=369} [2022-01-19 01:28:03,863 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 52 predicate places. [2022-01-19 01:28:03,863 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 369 transitions, 1288 flow [2022-01-19 01:28:03,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:03,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:28:03,864 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:28:03,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 01:28:03,865 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:28:03,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:28:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1319579132, now seen corresponding path program 1 times [2022-01-19 01:28:03,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:28:03,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538021877] [2022-01-19 01:28:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:28:03,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:28:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:28:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 01:28:04,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:28:04,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538021877] [2022-01-19 01:28:04,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538021877] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:28:04,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899221115] [2022-01-19 01:28:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:28:04,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:28:04,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:28:04,408 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) [2022-01-19 01:28:04,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 01:28:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:28:04,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-19 01:28:04,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:28:05,920 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 [2022-01-19 01:28:06,806 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 [2022-01-19 01:28:06,973 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 [2022-01-19 01:28:07,049 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 [2022-01-19 01:28:07,109 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 [2022-01-19 01:28:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 01:28:07,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:28:08,690 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:28:08,690 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 67 treesize of output 56 [2022-01-19 01:28:08,702 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 01:28:08,702 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 3222 treesize of output 3101 [2022-01-19 01:28:08,726 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:28:08,727 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 3094 treesize of output 2326 [2022-01-19 01:28:08,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-19 01:28:08,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1163 treesize of output 1067 [2022-01-19 01:28:08,763 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:28:08,764 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 2230 treesize of output 1846 [2022-01-19 01:28:08,780 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:28:08,780 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 1846 treesize of output 1654 [2022-01-19 01:28:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 01:28:17,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899221115] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:28:17,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:28:17,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 21] total 58 [2022-01-19 01:28:17,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526487776] [2022-01-19 01:28:17,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:28:17,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-19 01:28:17,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:28:17,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-19 01:28:17,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=2707, Unknown=80, NotChecked=0, Total=3306 [2022-01-19 01:28:17,088 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 356 [2022-01-19 01:28:17,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 369 transitions, 1288 flow. Second operand has 58 states, 58 states have (on average 177.48275862068965) internal successors, (10294), 58 states have internal predecessors, (10294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:17,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:28:17,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 356 [2022-01-19 01:28:17,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:28:33,181 INFO L129 PetriNetUnfolder]: 24405/64748 cut-off events. [2022-01-19 01:28:33,181 INFO L130 PetriNetUnfolder]: For 310728/323084 co-relation queries the response was YES. [2022-01-19 01:28:34,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219594 conditions, 64748 events. 24405/64748 cut-off events. For 310728/323084 co-relation queries the response was YES. Maximal size of possible extension queue 1746. Compared 788661 event pairs, 1070 based on Foata normal form. 276/58708 useless extension candidates. Maximal degree in co-relation 219563. Up to 16631 conditions per place. [2022-01-19 01:28:34,454 INFO L132 encePairwiseOnDemand]: 320/356 looper letters, 464 selfloop transitions, 88 changer transitions 16/740 dead transitions. [2022-01-19 01:28:34,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 740 transitions, 4867 flow [2022-01-19 01:28:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 01:28:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 01:28:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7970 transitions. [2022-01-19 01:28:34,464 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5088100102145046 [2022-01-19 01:28:34,464 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7970 transitions. [2022-01-19 01:28:34,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7970 transitions. [2022-01-19 01:28:34,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:28:34,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7970 transitions. [2022-01-19 01:28:34,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 181.13636363636363) internal successors, (7970), 44 states have internal predecessors, (7970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:34,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 356.0) internal successors, (16020), 45 states have internal predecessors, (16020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:34,490 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 356.0) internal successors, (16020), 45 states have internal predecessors, (16020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:34,491 INFO L186 Difference]: Start difference. First operand has 367 places, 369 transitions, 1288 flow. Second operand 44 states and 7970 transitions. [2022-01-19 01:28:34,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 740 transitions, 4867 flow [2022-01-19 01:28:34,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 740 transitions, 4843 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-01-19 01:28:34,633 INFO L242 Difference]: Finished difference. Result has 421 places, 435 transitions, 2251 flow [2022-01-19 01:28:34,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2251, PETRI_PLACES=421, PETRI_TRANSITIONS=435} [2022-01-19 01:28:34,634 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 106 predicate places. [2022-01-19 01:28:34,634 INFO L470 AbstractCegarLoop]: Abstraction has has 421 places, 435 transitions, 2251 flow [2022-01-19 01:28:34,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 177.48275862068965) internal successors, (10294), 58 states have internal predecessors, (10294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:34,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:28:34,636 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:28:34,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-19 01:28:34,840 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,SelfDestructingSolverStorable15 [2022-01-19 01:28:34,841 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:28:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:28:34,841 INFO L85 PathProgramCache]: Analyzing trace with hash 992276515, now seen corresponding path program 2 times [2022-01-19 01:28:34,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:28:34,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339554845] [2022-01-19 01:28:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:28:34,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:28:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:28:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 01:28:34,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:28:34,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339554845] [2022-01-19 01:28:34,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339554845] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:28:34,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084559428] [2022-01-19 01:28:34,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 01:28:34,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:28:34,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:28:34,899 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) [2022-01-19 01:28:34,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 01:28:35,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 01:28:35,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:28:35,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-19 01:28:35,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:28:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-19 01:28:35,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 01:28:35,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084559428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:28:35,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 01:28:35,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-01-19 01:28:35,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486792630] [2022-01-19 01:28:35,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:28:35,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:28:35,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:28:35,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:28:35,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 01:28:35,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2022-01-19 01:28:35,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 435 transitions, 2251 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:35,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:28:35,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2022-01-19 01:28:35,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:28:47,843 INFO L129 PetriNetUnfolder]: 22797/61794 cut-off events. [2022-01-19 01:28:47,843 INFO L130 PetriNetUnfolder]: For 410410/426257 co-relation queries the response was YES. [2022-01-19 01:28:48,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218178 conditions, 61794 events. 22797/61794 cut-off events. For 410410/426257 co-relation queries the response was YES. Maximal size of possible extension queue 2002. Compared 772377 event pairs, 3318 based on Foata normal form. 340/54972 useless extension candidates. Maximal degree in co-relation 218129. Up to 15312 conditions per place. [2022-01-19 01:28:49,070 INFO L132 encePairwiseOnDemand]: 353/356 looper letters, 151 selfloop transitions, 21 changer transitions 0/489 dead transitions. [2022-01-19 01:28:49,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 489 transitions, 3263 flow [2022-01-19 01:28:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:28:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:28:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2022-01-19 01:28:49,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2022-01-19 01:28:49,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2022-01-19 01:28:49,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2022-01-19 01:28:49,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:28:49,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2022-01-19 01:28:49,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:49,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:49,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:49,075 INFO L186 Difference]: Start difference. First operand has 421 places, 435 transitions, 2251 flow. Second operand 3 states and 979 transitions. [2022-01-19 01:28:49,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 489 transitions, 3263 flow [2022-01-19 01:28:49,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 489 transitions, 3006 flow, removed 110 selfloop flow, removed 21 redundant places. [2022-01-19 01:28:49,536 INFO L242 Difference]: Finished difference. Result has 396 places, 434 transitions, 2108 flow [2022-01-19 01:28:49,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2108, PETRI_PLACES=396, PETRI_TRANSITIONS=434} [2022-01-19 01:28:49,536 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 81 predicate places. [2022-01-19 01:28:49,537 INFO L470 AbstractCegarLoop]: Abstraction has has 396 places, 434 transitions, 2108 flow [2022-01-19 01:28:49,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:49,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:28:49,537 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:28:49,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-19 01:28:49,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:28:49,740 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:28:49,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:28:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -622006076, now seen corresponding path program 1 times [2022-01-19 01:28:49,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:28:49,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398547561] [2022-01-19 01:28:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:28:49,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:28:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:28:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-19 01:28:49,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:28:49,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398547561] [2022-01-19 01:28:49,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398547561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:28:49,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:28:49,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 01:28:49,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401259061] [2022-01-19 01:28:49,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:28:49,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 01:28:49,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:28:49,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 01:28:49,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 01:28:49,794 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2022-01-19 01:28:49,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 434 transitions, 2108 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:49,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:28:49,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2022-01-19 01:28:49,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:28:58,212 INFO L129 PetriNetUnfolder]: 17497/43091 cut-off events. [2022-01-19 01:28:58,212 INFO L130 PetriNetUnfolder]: For 368440/378440 co-relation queries the response was YES. [2022-01-19 01:28:58,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170561 conditions, 43091 events. 17497/43091 cut-off events. For 368440/378440 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 469435 event pairs, 1933 based on Foata normal form. 349/39735 useless extension candidates. Maximal degree in co-relation 170518. Up to 13225 conditions per place. [2022-01-19 01:28:59,148 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 159 selfloop transitions, 4 changer transitions 0/469 dead transitions. [2022-01-19 01:28:59,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 469 transitions, 2864 flow [2022-01-19 01:28:59,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 01:28:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 01:28:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2022-01-19 01:28:59,151 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.901685393258427 [2022-01-19 01:28:59,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 963 transitions. [2022-01-19 01:28:59,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 963 transitions. [2022-01-19 01:28:59,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:28:59,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 963 transitions. [2022-01-19 01:28:59,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:59,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:59,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:59,153 INFO L186 Difference]: Start difference. First operand has 396 places, 434 transitions, 2108 flow. Second operand 3 states and 963 transitions. [2022-01-19 01:28:59,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 469 transitions, 2864 flow [2022-01-19 01:28:59,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 469 transitions, 2786 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 01:28:59,317 INFO L242 Difference]: Finished difference. Result has 396 places, 429 transitions, 2027 flow [2022-01-19 01:28:59,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2027, PETRI_PLACES=396, PETRI_TRANSITIONS=429} [2022-01-19 01:28:59,317 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 81 predicate places. [2022-01-19 01:28:59,318 INFO L470 AbstractCegarLoop]: Abstraction has has 396 places, 429 transitions, 2027 flow [2022-01-19 01:28:59,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:59,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:28:59,318 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:28:59,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 01:28:59,318 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:28:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:28:59,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1451409838, now seen corresponding path program 1 times [2022-01-19 01:28:59,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:28:59,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554022720] [2022-01-19 01:28:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:28:59,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:28:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:28:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 01:28:59,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:28:59,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554022720] [2022-01-19 01:28:59,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554022720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:28:59,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:28:59,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 01:28:59,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795788228] [2022-01-19 01:28:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:28:59,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 01:28:59,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:28:59,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 01:28:59,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 01:28:59,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 356 [2022-01-19 01:28:59,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 429 transitions, 2027 flow. Second operand has 6 states, 6 states have (on average 277.1666666666667) internal successors, (1663), 6 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:28:59,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:28:59,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 356 [2022-01-19 01:28:59,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:29:05,263 INFO L129 PetriNetUnfolder]: 8941/31864 cut-off events. [2022-01-19 01:29:05,263 INFO L130 PetriNetUnfolder]: For 162079/167643 co-relation queries the response was YES. [2022-01-19 01:29:05,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97058 conditions, 31864 events. 8941/31864 cut-off events. For 162079/167643 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 390651 event pairs, 1319 based on Foata normal form. 24/28943 useless extension candidates. Maximal degree in co-relation 97015. Up to 11288 conditions per place. [2022-01-19 01:29:05,653 INFO L132 encePairwiseOnDemand]: 348/356 looper letters, 204 selfloop transitions, 8 changer transitions 0/468 dead transitions. [2022-01-19 01:29:05,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 468 transitions, 2787 flow [2022-01-19 01:29:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 01:29:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 01:29:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1965 transitions. [2022-01-19 01:29:05,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7885232744783307 [2022-01-19 01:29:05,655 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1965 transitions. [2022-01-19 01:29:05,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1965 transitions. [2022-01-19 01:29:05,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:29:05,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1965 transitions. [2022-01-19 01:29:05,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.7142857142857) internal successors, (1965), 7 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:05,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:05,659 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:05,659 INFO L186 Difference]: Start difference. First operand has 396 places, 429 transitions, 2027 flow. Second operand 7 states and 1965 transitions. [2022-01-19 01:29:05,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 468 transitions, 2787 flow [2022-01-19 01:29:05,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 468 transitions, 2779 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:29:05,763 INFO L242 Difference]: Finished difference. Result has 402 places, 431 transitions, 2049 flow [2022-01-19 01:29:05,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2049, PETRI_PLACES=402, PETRI_TRANSITIONS=431} [2022-01-19 01:29:05,763 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 87 predicate places. [2022-01-19 01:29:05,763 INFO L470 AbstractCegarLoop]: Abstraction has has 402 places, 431 transitions, 2049 flow [2022-01-19 01:29:05,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.1666666666667) internal successors, (1663), 6 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:05,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:29:05,764 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:29:05,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 01:29:05,764 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:29:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:29:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -988165473, now seen corresponding path program 1 times [2022-01-19 01:29:05,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:29:05,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023830741] [2022-01-19 01:29:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:29:05,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:29:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:29:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 01:29:05,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:29:05,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023830741] [2022-01-19 01:29:05,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023830741] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:29:05,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749701726] [2022-01-19 01:29:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:29:05,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:29:05,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:29:05,897 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) [2022-01-19 01:29:05,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 01:29:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:29:06,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-19 01:29:06,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:29:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 01:29:06,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:29:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 01:29:07,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749701726] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:29:07,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:29:07,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-19 01:29:07,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011314911] [2022-01-19 01:29:07,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:29:07,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 01:29:07,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:29:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 01:29:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-01-19 01:29:07,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 356 [2022-01-19 01:29:07,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 431 transitions, 2049 flow. Second operand has 19 states, 19 states have (on average 266.8421052631579) internal successors, (5070), 19 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:07,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:29:07,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 356 [2022-01-19 01:29:07,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:29:10,508 INFO L129 PetriNetUnfolder]: 3872/16608 cut-off events. [2022-01-19 01:29:10,508 INFO L130 PetriNetUnfolder]: For 89643/92508 co-relation queries the response was YES. [2022-01-19 01:29:10,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48723 conditions, 16608 events. 3872/16608 cut-off events. For 89643/92508 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 187412 event pairs, 572 based on Foata normal form. 947/16144 useless extension candidates. Maximal degree in co-relation 48678. Up to 3950 conditions per place. [2022-01-19 01:29:10,680 INFO L132 encePairwiseOnDemand]: 334/356 looper letters, 196 selfloop transitions, 36 changer transitions 5/486 dead transitions. [2022-01-19 01:29:10,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 486 transitions, 2642 flow [2022-01-19 01:29:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 01:29:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 01:29:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4604 transitions. [2022-01-19 01:29:10,684 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7607402511566425 [2022-01-19 01:29:10,684 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4604 transitions. [2022-01-19 01:29:10,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4604 transitions. [2022-01-19 01:29:10,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:29:10,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4604 transitions. [2022-01-19 01:29:10,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 270.8235294117647) internal successors, (4604), 17 states have internal predecessors, (4604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:10,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 356.0) internal successors, (6408), 18 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:10,694 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 356.0) internal successors, (6408), 18 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:10,694 INFO L186 Difference]: Start difference. First operand has 402 places, 431 transitions, 2049 flow. Second operand 17 states and 4604 transitions. [2022-01-19 01:29:10,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 486 transitions, 2642 flow [2022-01-19 01:29:10,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 486 transitions, 2596 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-01-19 01:29:10,780 INFO L242 Difference]: Finished difference. Result has 413 places, 413 transitions, 1812 flow [2022-01-19 01:29:10,780 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1812, PETRI_PLACES=413, PETRI_TRANSITIONS=413} [2022-01-19 01:29:10,781 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 98 predicate places. [2022-01-19 01:29:10,781 INFO L470 AbstractCegarLoop]: Abstraction has has 413 places, 413 transitions, 1812 flow [2022-01-19 01:29:10,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 266.8421052631579) internal successors, (5070), 19 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:29:10,782 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:29:10,782 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:29:10,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 01:29:10,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:29:10,999 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 01:29:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:29:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash 238562649, now seen corresponding path program 1 times [2022-01-19 01:29:11,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:29:11,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932345819] [2022-01-19 01:29:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:29:11,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:29:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:29:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-19 01:29:11,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:29:11,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932345819] [2022-01-19 01:29:11,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932345819] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:29:11,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159368685] [2022-01-19 01:29:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:29:11,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:29:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:29:11,432 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) [2022-01-19 01:29:11,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 01:29:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:29:11,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-19 01:29:11,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:29:13,048 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 [2022-01-19 01:29:13,586 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 [2022-01-19 01:29:13,680 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 [2022-01-19 01:29:13,749 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 6 treesize of output 5 [2022-01-19 01:29:13,805 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 [2022-01-19 01:29:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-19 01:29:14,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:29:15,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 01:29:15,006 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 67 treesize of output 56 [2022-01-19 01:29:15,026 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 01:29:15,027 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 51702 treesize of output 49661 [2022-01-19 01:29:15,178 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:29:15,179 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 49654 treesize of output 48118 [2022-01-19 01:29:15,307 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:29:15,307 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 48118 treesize of output 45046 [2022-01-19 01:29:15,498 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:29:15,499 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 45046 treesize of output 32758 [2022-01-19 01:29:15,645 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 01:29:15,650 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 32758 treesize of output 26614 Received shutdown request... [2022-01-19 01:41:11,637 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 01:41:11,639 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 01:41:11,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 01:41:11,656 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 [2022-01-19 01:41:11,657 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 01:41:11,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:41:11,843 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 286 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 25ms.. [2022-01-19 01:41:11,845 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-19 01:41:11,845 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-19 01:41:11,845 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-19 01:41:11,845 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-19 01:41:11,847 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:41:11,848 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 01:41:11,848 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 01:41:11,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:41:11 BasicIcfg [2022-01-19 01:41:11,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 01:41:11,851 INFO L158 Benchmark]: Toolchain (without parser) took 823749.30ms. Allocated memory was 356.5MB in the beginning and 14.5GB in the end (delta: 14.2GB). Free memory was 304.1MB in the beginning and 3.3GB in the end (delta: -3.0GB). Peak memory consumption was 13.0GB. Max. memory is 16.0GB. [2022-01-19 01:41:11,851 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 356.5MB. Free memory is still 320.7MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 01:41:11,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.44ms. Allocated memory is still 356.5MB. Free memory was 304.0MB in the beginning and 327.1MB in the end (delta: -23.2MB). Peak memory consumption was 17.2MB. Max. memory is 16.0GB. [2022-01-19 01:41:11,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.77ms. Allocated memory is still 356.5MB. Free memory was 327.1MB in the beginning and 322.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-19 01:41:11,852 INFO L158 Benchmark]: Boogie Preprocessor took 59.10ms. Allocated memory is still 356.5MB. Free memory was 322.9MB in the beginning and 320.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 01:41:11,852 INFO L158 Benchmark]: RCFGBuilder took 855.25ms. Allocated memory is still 356.5MB. Free memory was 320.8MB in the beginning and 266.3MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2022-01-19 01:41:11,852 INFO L158 Benchmark]: TraceAbstraction took 822514.77ms. Allocated memory was 356.5MB in the beginning and 14.5GB in the end (delta: 14.2GB). Free memory was 266.3MB in the beginning and 3.3GB in the end (delta: -3.0GB). Peak memory consumption was 13.0GB. Max. memory is 16.0GB. [2022-01-19 01:41:11,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 356.5MB. Free memory is still 320.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 268.44ms. Allocated memory is still 356.5MB. Free memory was 304.0MB in the beginning and 327.1MB in the end (delta: -23.2MB). Peak memory consumption was 17.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.77ms. Allocated memory is still 356.5MB. Free memory was 327.1MB in the beginning and 322.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 59.10ms. Allocated memory is still 356.5MB. Free memory was 322.9MB in the beginning and 320.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 855.25ms. Allocated memory is still 356.5MB. Free memory was 320.8MB in the beginning and 266.3MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * TraceAbstraction took 822514.77ms. Allocated memory was 356.5MB in the beginning and 14.5GB in the end (delta: 14.2GB). Free memory was 266.3MB in the beginning and 3.3GB in the end (delta: -3.0GB). Peak memory consumption was 13.0GB. 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: 206]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 286 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 25ms.. - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 286 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 25ms.. - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 286 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 25ms.. - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 286 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 25ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 286 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 25ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 372 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 822.3s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 74.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6501 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6501 mSDsluCounter, 4375 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2277 IncrementalHoareTripleChecker+Unchecked, 5922 mSDsCounter, 312 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5904 IncrementalHoareTripleChecker+Invalid, 8493 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 312 mSolverCounterUnsat, 484 mSDtfsCounter, 5904 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2119 GetRequests, 1848 SyntacticMatches, 5 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5374 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2251occurred in iteration=16, InterpolantAutomatonStates: 176, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 23.8s InterpolantComputationTime, 6245 NumberOfCodeBlocks, 6245 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 7027 ConstructedInterpolants, 228 QuantifiedInterpolants, 44026 SizeOfPredicates, 68 NumberOfNonLiveVariables, 2602 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 27 InterpolantComputations, 17 PerfectInterpolantSequences, 193/222 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