/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:49:31,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:49:31,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:49:31,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:49:31,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:49:31,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:49:31,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:49:31,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:49:31,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:49:31,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:49:31,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:49:31,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:49:31,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:49:31,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:49:31,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:49:31,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:49:31,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:49:31,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:49:31,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:49:31,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:49:31,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:49:31,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:49:31,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:49:31,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:49:31,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:49:31,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:49:31,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:49:31,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:49:31,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:49:31,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:49:31,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:49:31,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:49:31,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:49:31,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:49:31,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:49:31,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:49:31,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:49:31,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:49:31,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:49:31,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:49:31,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:49:31,073 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-SemanticLbe.epf [2022-12-12 15:49:31,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:49:31,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:49:31,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:49:31,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:49:31,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:49:31,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:49:31,095 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:49:31,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:49:31,096 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:49:31,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:49:31,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:49:31,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:49:31,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:49:31,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:49:31,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:49:31,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:49:31,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:49:31,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:49:31,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:49:31,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:49:31,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:49:31,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:49:31,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:49:31,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:49:31,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:49:31,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:49:31,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:49:31,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:49:31,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:49:31,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:49:31,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:49:31,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:49:31,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:49:31,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:49:31,393 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:49:31,394 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:49:31,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2022-12-12 15:49:32,386 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:49:32,578 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:49:32,578 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2022-12-12 15:49:32,589 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7063350c4/8e7708cf585b40748e6211e01d47160b/FLAG69a032c2e [2022-12-12 15:49:32,598 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7063350c4/8e7708cf585b40748e6211e01d47160b [2022-12-12 15:49:32,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:49:32,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:49:32,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:49:32,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:49:32,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:49:32,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61622275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32, skipping insertion in model container [2022-12-12 15:49:32,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:49:32,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:49:32,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,728 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-12-12 15:49:32,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:49:32,744 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:49:32,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:49:32,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:49:32,783 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-12-12 15:49:32,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:49:32,801 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:49:32,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32 WrapperNode [2022-12-12 15:49:32,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:49:32,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:49:32,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:49:32,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:49:32,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,853 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 333 [2022-12-12 15:49:32,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:49:32,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:49:32,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:49:32,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:49:32,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:49:32,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:49:32,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:49:32,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:49:32,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (1/1) ... [2022-12-12 15:49:32,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:49:32,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:49:32,932 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) [2022-12-12 15:49:32,950 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 [2022-12-12 15:49:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:49:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:49:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:49:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:49:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:49:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:49:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:49:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:49:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 15:49:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 15:49:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:49:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:49:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:49:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 15:49:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:49:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:49:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:49:32,962 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 15:49:33,094 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:49:33,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:49:33,390 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:49:33,638 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:49:33,639 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 15:49:33,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:49:33 BoogieIcfgContainer [2022-12-12 15:49:33,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:49:33,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:49:33,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:49:33,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:49:33,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:49:32" (1/3) ... [2022-12-12 15:49:33,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a5e9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:49:33, skipping insertion in model container [2022-12-12 15:49:33,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:49:32" (2/3) ... [2022-12-12 15:49:33,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a5e9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:49:33, skipping insertion in model container [2022-12-12 15:49:33,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:49:33" (3/3) ... [2022-12-12 15:49:33,653 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2022-12-12 15:49:33,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:49:33,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:49:33,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:49:33,734 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 15:49:33,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 234 transitions, 492 flow [2022-12-12 15:49:33,852 INFO L130 PetriNetUnfolder]: 19/231 cut-off events. [2022-12-12 15:49:33,852 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:49:33,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 19/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-12-12 15:49:33,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 234 transitions, 492 flow [2022-12-12 15:49:33,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 221 transitions, 460 flow [2022-12-12 15:49:33,865 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:49:33,887 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 221 transitions, 460 flow [2022-12-12 15:49:33,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 221 transitions, 460 flow [2022-12-12 15:49:33,926 INFO L130 PetriNetUnfolder]: 19/221 cut-off events. [2022-12-12 15:49:33,926 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:49:33,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 221 events. 19/221 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-12-12 15:49:33,929 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 221 transitions, 460 flow [2022-12-12 15:49:33,929 INFO L226 LiptonReduction]: Number of co-enabled transitions 1266 [2022-12-12 15:49:40,693 INFO L241 LiptonReduction]: Total number of compositions: 191 [2022-12-12 15:49:40,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:49:40,712 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@37361a5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:49:40,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 15:49:40,719 INFO L130 PetriNetUnfolder]: 6/29 cut-off events. [2022-12-12 15:49:40,719 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:49:40,719 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:40,720 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:49:40,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash 340144083, now seen corresponding path program 1 times [2022-12-12 15:49:40,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:40,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405243824] [2022-12-12 15:49:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:40,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:49:41,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:41,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405243824] [2022-12-12 15:49:41,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405243824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:49:41,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:49:41,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 15:49:41,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914186530] [2022-12-12 15:49:41,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:49:41,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:49:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:49:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:49:41,315 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:41,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:41,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:41,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:41,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:41,482 INFO L130 PetriNetUnfolder]: 451/666 cut-off events. [2022-12-12 15:49:41,482 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-12 15:49:41,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 666 events. 451/666 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2319 event pairs, 73 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 1134. Up to 548 conditions per place. [2022-12-12 15:49:41,492 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 42 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2022-12-12 15:49:41,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 221 flow [2022-12-12 15:49:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:49:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:49:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2022-12-12 15:49:41,502 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2022-12-12 15:49:41,504 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 3 states and 48 transitions. [2022-12-12 15:49:41,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 221 flow [2022-12-12 15:49:41,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 15:49:41,516 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 92 flow [2022-12-12 15:49:41,517 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2022-12-12 15:49:41,520 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2022-12-12 15:49:41,520 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 92 flow [2022-12-12 15:49:41,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:41,520 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:41,520 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:49:41,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:49:41,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:41,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:41,522 INFO L85 PathProgramCache]: Analyzing trace with hash -437421631, now seen corresponding path program 1 times [2022-12-12 15:49:41,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:41,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795735627] [2022-12-12 15:49:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:41,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:49:41,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:41,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795735627] [2022-12-12 15:49:41,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795735627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:49:41,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:49:41,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:49:41,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295506361] [2022-12-12 15:49:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:49:41,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:49:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:49:41,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:49:41,687 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:41,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:41,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:41,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:41,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:41,819 INFO L130 PetriNetUnfolder]: 514/790 cut-off events. [2022-12-12 15:49:41,820 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-12-12 15:49:41,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 790 events. 514/790 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2713 event pairs, 359 based on Foata normal form. 36/768 useless extension candidates. Maximal degree in co-relation 584. Up to 667 conditions per place. [2022-12-12 15:49:41,823 INFO L137 encePairwiseOnDemand]: 24/30 looper letters, 32 selfloop transitions, 2 changer transitions 20/54 dead transitions. [2022-12-12 15:49:41,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 54 transitions, 251 flow [2022-12-12 15:49:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 15:49:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 15:49:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2022-12-12 15:49:41,825 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-12-12 15:49:41,826 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 92 flow. Second operand 4 states and 54 transitions. [2022-12-12 15:49:41,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 54 transitions, 251 flow [2022-12-12 15:49:41,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:49:41,828 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 108 flow [2022-12-12 15:49:41,828 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2022-12-12 15:49:41,828 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2022-12-12 15:49:41,829 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 108 flow [2022-12-12 15:49:41,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:41,829 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:41,829 INFO L214 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] [2022-12-12 15:49:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:49:41,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1106658625, now seen corresponding path program 1 times [2022-12-12 15:49:41,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:41,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395818289] [2022-12-12 15:49:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:49:41,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:41,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395818289] [2022-12-12 15:49:41,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395818289] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:49:41,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:49:41,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:49:41,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924647879] [2022-12-12 15:49:41,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:49:41,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:49:41,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:41,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:49:41,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:49:41,998 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:41,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:41,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:41,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:41,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:42,114 INFO L130 PetriNetUnfolder]: 533/811 cut-off events. [2022-12-12 15:49:42,114 INFO L131 PetriNetUnfolder]: For 281/281 co-relation queries the response was YES. [2022-12-12 15:49:42,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2010 conditions, 811 events. 533/811 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2870 event pairs, 183 based on Foata normal form. 48/856 useless extension candidates. Maximal degree in co-relation 1996. Up to 512 conditions per place. [2022-12-12 15:49:42,119 INFO L137 encePairwiseOnDemand]: 27/30 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-12-12 15:49:42,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 257 flow [2022-12-12 15:49:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:49:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:49:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2022-12-12 15:49:42,122 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2022-12-12 15:49:42,122 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 108 flow. Second operand 3 states and 49 transitions. [2022-12-12 15:49:42,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 257 flow [2022-12-12 15:49:42,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 253 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 15:49:42,125 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 112 flow [2022-12-12 15:49:42,125 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2022-12-12 15:49:42,126 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-12-12 15:49:42,126 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 112 flow [2022-12-12 15:49:42,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:42,126 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:42,126 INFO L214 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] [2022-12-12 15:49:42,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:49:42,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1073864303, now seen corresponding path program 1 times [2022-12-12 15:49:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:42,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517501660] [2022-12-12 15:49:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:42,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:49:42,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:42,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517501660] [2022-12-12 15:49:42,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517501660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:49:42,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:49:42,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:49:42,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674918982] [2022-12-12 15:49:42,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:49:42,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:49:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:42,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:49:42,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:49:42,267 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:42,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:42,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:42,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:42,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:42,393 INFO L130 PetriNetUnfolder]: 549/835 cut-off events. [2022-12-12 15:49:42,393 INFO L131 PetriNetUnfolder]: For 376/376 co-relation queries the response was YES. [2022-12-12 15:49:42,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 835 events. 549/835 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2854 event pairs, 167 based on Foata normal form. 30/862 useless extension candidates. Maximal degree in co-relation 2143. Up to 520 conditions per place. [2022-12-12 15:49:42,400 INFO L137 encePairwiseOnDemand]: 27/30 looper letters, 43 selfloop transitions, 2 changer transitions 6/51 dead transitions. [2022-12-12 15:49:42,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 259 flow [2022-12-12 15:49:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:49:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:49:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-12-12 15:49:42,401 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2022-12-12 15:49:42,402 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 112 flow. Second operand 3 states and 51 transitions. [2022-12-12 15:49:42,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 259 flow [2022-12-12 15:49:42,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:49:42,404 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 118 flow [2022-12-12 15:49:42,405 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2022-12-12 15:49:42,406 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-12-12 15:49:42,406 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 118 flow [2022-12-12 15:49:42,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:42,406 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:42,406 INFO L214 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] [2022-12-12 15:49:42,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 15:49:42,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:42,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:42,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2089701802, now seen corresponding path program 1 times [2022-12-12 15:49:42,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:42,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681375219] [2022-12-12 15:49:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:42,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:49:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:42,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681375219] [2022-12-12 15:49:42,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681375219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:49:42,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:49:42,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:49:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887032783] [2022-12-12 15:49:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:49:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:49:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:42,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:49:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:49:42,496 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:42,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:42,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:42,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:42,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:42,646 INFO L130 PetriNetUnfolder]: 635/997 cut-off events. [2022-12-12 15:49:42,646 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES. [2022-12-12 15:49:42,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 997 events. 635/997 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3710 event pairs, 505 based on Foata normal form. 18/1010 useless extension candidates. Maximal degree in co-relation 2629. Up to 831 conditions per place. [2022-12-12 15:49:42,649 INFO L137 encePairwiseOnDemand]: 22/30 looper letters, 30 selfloop transitions, 7 changer transitions 17/54 dead transitions. [2022-12-12 15:49:42,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 278 flow [2022-12-12 15:49:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:49:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:49:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2022-12-12 15:49:42,650 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2022-12-12 15:49:42,650 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 118 flow. Second operand 5 states and 52 transitions. [2022-12-12 15:49:42,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 278 flow [2022-12-12 15:49:42,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:49:42,652 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 152 flow [2022-12-12 15:49:42,652 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2022-12-12 15:49:42,652 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2022-12-12 15:49:42,652 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 152 flow [2022-12-12 15:49:42,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:42,652 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:42,652 INFO L214 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] [2022-12-12 15:49:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 15:49:42,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash -909929642, now seen corresponding path program 1 times [2022-12-12 15:49:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:42,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151788639] [2022-12-12 15:49:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:42,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:49:42,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:42,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151788639] [2022-12-12 15:49:42,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151788639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:49:42,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:49:42,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:49:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825211980] [2022-12-12 15:49:42,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:49:42,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:49:42,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:42,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:49:42,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:49:42,748 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:42,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:42,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:42,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:42,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:42,916 INFO L130 PetriNetUnfolder]: 733/1149 cut-off events. [2022-12-12 15:49:42,916 INFO L131 PetriNetUnfolder]: For 674/674 co-relation queries the response was YES. [2022-12-12 15:49:42,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3071 conditions, 1149 events. 733/1149 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4419 event pairs, 587 based on Foata normal form. 26/1173 useless extension candidates. Maximal degree in co-relation 3043. Up to 834 conditions per place. [2022-12-12 15:49:42,920 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 33 selfloop transitions, 3 changer transitions 24/60 dead transitions. [2022-12-12 15:49:42,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 347 flow [2022-12-12 15:49:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 15:49:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 15:49:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2022-12-12 15:49:42,920 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2022-12-12 15:49:42,921 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 152 flow. Second operand 4 states and 55 transitions. [2022-12-12 15:49:42,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 347 flow [2022-12-12 15:49:42,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 336 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-12 15:49:42,922 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 150 flow [2022-12-12 15:49:42,923 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2022-12-12 15:49:42,923 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2022-12-12 15:49:42,923 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 150 flow [2022-12-12 15:49:42,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:42,923 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:42,923 INFO L214 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] [2022-12-12 15:49:42,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 15:49:42,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash -372613339, now seen corresponding path program 1 times [2022-12-12 15:49:42,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:42,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515788481] [2022-12-12 15:49:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:42,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:49:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515788481] [2022-12-12 15:49:43,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515788481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:49:43,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:49:43,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:49:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079072534] [2022-12-12 15:49:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:49:43,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:49:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:49:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:49:43,029 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:43,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:43,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:43,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:43,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:43,105 INFO L130 PetriNetUnfolder]: 353/547 cut-off events. [2022-12-12 15:49:43,105 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2022-12-12 15:49:43,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 547 events. 353/547 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1620 event pairs, 139 based on Foata normal form. 14/560 useless extension candidates. Maximal degree in co-relation 1445. Up to 460 conditions per place. [2022-12-12 15:49:43,107 INFO L137 encePairwiseOnDemand]: 27/30 looper letters, 37 selfloop transitions, 2 changer transitions 7/46 dead transitions. [2022-12-12 15:49:43,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 267 flow [2022-12-12 15:49:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:49:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:49:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2022-12-12 15:49:43,108 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2022-12-12 15:49:43,108 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 150 flow. Second operand 3 states and 41 transitions. [2022-12-12 15:49:43,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 267 flow [2022-12-12 15:49:43,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 253 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-12 15:49:43,110 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 150 flow [2022-12-12 15:49:43,110 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2022-12-12 15:49:43,110 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2022-12-12 15:49:43,110 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 150 flow [2022-12-12 15:49:43,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:43,110 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:43,110 INFO L214 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] [2022-12-12 15:49:43,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 15:49:43,111 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1030114951, now seen corresponding path program 1 times [2022-12-12 15:49:43,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:43,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381981528] [2022-12-12 15:49:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:43,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:49:43,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381981528] [2022-12-12 15:49:43,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381981528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:49:43,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:49:43,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:49:43,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409133403] [2022-12-12 15:49:43,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:49:43,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:49:43,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:43,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:49:43,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:49:43,247 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:43,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:43,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:43,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:43,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:43,419 INFO L130 PetriNetUnfolder]: 881/1331 cut-off events. [2022-12-12 15:49:43,419 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2022-12-12 15:49:43,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 1331 events. 881/1331 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4920 event pairs, 346 based on Foata normal form. 42/1372 useless extension candidates. Maximal degree in co-relation 3741. Up to 492 conditions per place. [2022-12-12 15:49:43,425 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 64 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2022-12-12 15:49:43,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 422 flow [2022-12-12 15:49:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 15:49:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 15:49:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-12-12 15:49:43,426 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.55 [2022-12-12 15:49:43,426 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 150 flow. Second operand 4 states and 66 transitions. [2022-12-12 15:49:43,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 422 flow [2022-12-12 15:49:43,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 418 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 15:49:43,428 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 219 flow [2022-12-12 15:49:43,428 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2022-12-12 15:49:43,429 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2022-12-12 15:49:43,429 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 219 flow [2022-12-12 15:49:43,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:43,429 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:43,429 INFO L214 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] [2022-12-12 15:49:43,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 15:49:43,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash 626303541, now seen corresponding path program 1 times [2022-12-12 15:49:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:43,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100249865] [2022-12-12 15:49:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:49:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:43,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100249865] [2022-12-12 15:49:43,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100249865] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:49:43,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764548512] [2022-12-12 15:49:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:43,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:49:43,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:49:43,588 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) [2022-12-12 15:49:43,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 15:49:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:43,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 15:49:43,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:49:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:49:43,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:49:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:49:43,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764548512] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:49:43,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:49:43,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 15:49:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832887224] [2022-12-12 15:49:43,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:49:43,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 15:49:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 15:49:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-12 15:49:43,981 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:43,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 219 flow. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:43,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:43,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:43,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:44,203 INFO L130 PetriNetUnfolder]: 949/1470 cut-off events. [2022-12-12 15:49:44,203 INFO L131 PetriNetUnfolder]: For 1924/1924 co-relation queries the response was YES. [2022-12-12 15:49:44,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4702 conditions, 1470 events. 949/1470 cut-off events. For 1924/1924 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5578 event pairs, 669 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 4307. Up to 1331 conditions per place. [2022-12-12 15:49:44,210 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 41 selfloop transitions, 3 changer transitions 32/76 dead transitions. [2022-12-12 15:49:44,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 484 flow [2022-12-12 15:49:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:49:44,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:49:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2022-12-12 15:49:44,212 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35 [2022-12-12 15:49:44,212 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 219 flow. Second operand 6 states and 63 transitions. [2022-12-12 15:49:44,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 484 flow [2022-12-12 15:49:44,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 462 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-12-12 15:49:44,215 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 221 flow [2022-12-12 15:49:44,215 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2022-12-12 15:49:44,216 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2022-12-12 15:49:44,216 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 221 flow [2022-12-12 15:49:44,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:44,216 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:44,217 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 15:49:44,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 15:49:44,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:49:44,424 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:44,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash 241436055, now seen corresponding path program 2 times [2022-12-12 15:49:44,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:44,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194656873] [2022-12-12 15:49:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:44,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 15:49:44,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194656873] [2022-12-12 15:49:44,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194656873] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:49:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588917733] [2022-12-12 15:49:44,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 15:49:44,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:49:44,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:49:44,685 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) [2022-12-12 15:49:44,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 15:49:44,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:49:44,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:49:44,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 15:49:44,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:49:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 15:49:44,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:49:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 15:49:44,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588917733] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:49:44,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:49:44,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-12 15:49:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806564361] [2022-12-12 15:49:44,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:49:44,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 15:49:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:49:44,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 15:49:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-12 15:49:44,992 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:49:44,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 221 flow. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:44,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:49:44,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:49:44,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:49:45,419 INFO L130 PetriNetUnfolder]: 1118/1782 cut-off events. [2022-12-12 15:49:45,420 INFO L131 PetriNetUnfolder]: For 2207/2207 co-relation queries the response was YES. [2022-12-12 15:49:45,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5465 conditions, 1782 events. 1118/1782 cut-off events. For 2207/2207 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7304 event pairs, 376 based on Foata normal form. 132/1912 useless extension candidates. Maximal degree in co-relation 5429. Up to 1132 conditions per place. [2022-12-12 15:49:45,427 INFO L137 encePairwiseOnDemand]: 23/30 looper letters, 46 selfloop transitions, 7 changer transitions 51/104 dead transitions. [2022-12-12 15:49:45,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 678 flow [2022-12-12 15:49:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:49:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:49:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2022-12-12 15:49:45,428 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2022-12-12 15:49:45,428 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 221 flow. Second operand 9 states and 88 transitions. [2022-12-12 15:49:45,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 678 flow [2022-12-12 15:49:45,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 104 transitions, 658 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-12 15:49:45,431 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 237 flow [2022-12-12 15:49:45,431 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2022-12-12 15:49:45,431 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2022-12-12 15:49:45,431 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 237 flow [2022-12-12 15:49:45,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:49:45,432 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:49:45,432 INFO L214 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] [2022-12-12 15:49:45,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 15:49:45,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 15:49:45,637 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:49:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:49:45,638 INFO L85 PathProgramCache]: Analyzing trace with hash -68187640, now seen corresponding path program 3 times [2022-12-12 15:49:45,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:49:45,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702109970] [2022-12-12 15:49:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:49:45,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:49:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:49:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:49:49,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:49:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702109970] [2022-12-12 15:49:49,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702109970] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:49:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350760327] [2022-12-12 15:49:49,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 15:49:49,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:49:49,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:49:49,004 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) [2022-12-12 15:49:49,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 15:49:49,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 15:49:49,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:49:49,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-12 15:49:49,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:49:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 15:49:49,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:49:58,605 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 15:50:29,949 WARN L233 SmtUtils]: Spent 29.15s on a formula simplification. DAG size of input: 58 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 15:50:48,354 WARN L233 SmtUtils]: Spent 18.30s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 15:53:44,497 WARN L233 SmtUtils]: Spent 2.93m on a formula simplification. DAG size of input: 78 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 15:53:44,625 INFO L321 Elim1Store]: treesize reduction 48, result has 70.7 percent of original size [2022-12-12 15:53:44,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 127 [2022-12-12 15:53:44,710 INFO L321 Elim1Store]: treesize reduction 48, result has 71.4 percent of original size [2022-12-12 15:53:44,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 131 [2022-12-12 15:53:44,741 INFO L321 Elim1Store]: treesize reduction 161, result has 0.6 percent of original size [2022-12-12 15:53:44,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 1 [2022-12-12 15:53:44,775 INFO L321 Elim1Store]: treesize reduction 39, result has 60.2 percent of original size [2022-12-12 15:53:44,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 67 [2022-12-12 15:53:44,854 INFO L321 Elim1Store]: treesize reduction 48, result has 71.4 percent of original size [2022-12-12 15:53:44,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 131 [2022-12-12 15:53:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 15:53:45,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350760327] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:53:45,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:53:45,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 43 [2022-12-12 15:53:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746128936] [2022-12-12 15:53:45,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:53:45,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 15:53:45,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:53:45,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 15:53:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1693, Unknown=2, NotChecked=0, Total=1980 [2022-12-12 15:53:45,348 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 15:53:45,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 237 flow. Second operand has 45 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:53:45,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:53:45,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 15:53:45,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:54:07,798 WARN L233 SmtUtils]: Spent 20.36s on a formula simplification. DAG size of input: 153 DAG size of output: 113 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 15:54:09,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:54:12,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:54:14,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:55:42,454 WARN L233 SmtUtils]: Spent 1.44m on a formula simplification. DAG size of input: 72 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 15:55:44,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:56:42,535 WARN L233 SmtUtils]: Spent 56.92s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 15:58:30,526 WARN L233 SmtUtils]: Spent 1.80m on a formula simplification. DAG size of input: 144 DAG size of output: 108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 15:58:32,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:34,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:37,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:39,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:41,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:43,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:45,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:47,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:49,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 15:58:50,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 15:58:52,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 15:58:54,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 15:58:56,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 15:58:58,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 15:59:00,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-12 15:59:11,306 WARN L233 SmtUtils]: Spent 8.43s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 16:00:44,838 WARN L233 SmtUtils]: Spent 1.56m on a formula simplification. DAG size of input: 144 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 16:00:45,746 INFO L130 PetriNetUnfolder]: 1350/2154 cut-off events. [2022-12-12 16:00:45,746 INFO L131 PetriNetUnfolder]: For 2596/2596 co-relation queries the response was YES. [2022-12-12 16:00:45,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 2154 events. 1350/2154 cut-off events. For 2596/2596 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9108 event pairs, 390 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 5763. Up to 1261 conditions per place. [2022-12-12 16:00:45,773 INFO L137 encePairwiseOnDemand]: 14/30 looper letters, 134 selfloop transitions, 66 changer transitions 66/266 dead transitions. [2022-12-12 16:00:45,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 266 transitions, 1522 flow [2022-12-12 16:00:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 16:00:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 16:00:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 258 transitions. [2022-12-12 16:00:45,780 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.1829787234042553 [2022-12-12 16:00:45,780 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 237 flow. Second operand 47 states and 258 transitions. [2022-12-12 16:00:45,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 266 transitions, 1522 flow [2022-12-12 16:00:45,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 266 transitions, 1476 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-12-12 16:00:45,801 INFO L231 Difference]: Finished difference. Result has 108 places, 103 transitions, 750 flow [2022-12-12 16:00:45,801 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=750, PETRI_PLACES=108, PETRI_TRANSITIONS=103} [2022-12-12 16:00:45,802 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 74 predicate places. [2022-12-12 16:00:45,802 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 103 transitions, 750 flow [2022-12-12 16:00:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:45,802 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:00:45,802 INFO L214 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] [2022-12-12 16:00:45,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 16:00:46,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:00:46,003 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:00:46,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:00:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash 301611792, now seen corresponding path program 4 times [2022-12-12 16:00:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:00:46,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106878139] [2022-12-12 16:00:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:00:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:00:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:00:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:00:46,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:00:46,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106878139] [2022-12-12 16:00:46,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106878139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:00:46,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136799229] [2022-12-12 16:00:46,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 16:00:46,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:00:46,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:00:46,188 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) [2022-12-12 16:00:46,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 16:00:46,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 16:00:46,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:00:46,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 16:00:46,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:00:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:00:46,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:00:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:00:46,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136799229] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:00:46,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:00:46,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-12 16:00:46,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934412479] [2022-12-12 16:00:46,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:00:46,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 16:00:46,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:00:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 16:00:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-12 16:00:46,559 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 16:00:46,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 103 transitions, 750 flow. Second operand has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:46,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:00:46,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 16:00:46,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:00:47,019 INFO L130 PetriNetUnfolder]: 1330/2148 cut-off events. [2022-12-12 16:00:47,020 INFO L131 PetriNetUnfolder]: For 3648/3648 co-relation queries the response was YES. [2022-12-12 16:00:47,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7070 conditions, 2148 events. 1330/2148 cut-off events. For 3648/3648 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9097 event pairs, 861 based on Foata normal form. 50/2194 useless extension candidates. Maximal degree in co-relation 6209. Up to 1497 conditions per place. [2022-12-12 16:00:47,030 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 53 selfloop transitions, 4 changer transitions 75/132 dead transitions. [2022-12-12 16:00:47,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 1067 flow [2022-12-12 16:00:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 16:00:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 16:00:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2022-12-12 16:00:47,031 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32916666666666666 [2022-12-12 16:00:47,031 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 750 flow. Second operand 8 states and 79 transitions. [2022-12-12 16:00:47,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 1067 flow [2022-12-12 16:00:47,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 132 transitions, 935 flow, removed 53 selfloop flow, removed 7 redundant places. [2022-12-12 16:00:47,044 INFO L231 Difference]: Finished difference. Result has 109 places, 57 transitions, 333 flow [2022-12-12 16:00:47,045 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=109, PETRI_TRANSITIONS=57} [2022-12-12 16:00:47,046 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 75 predicate places. [2022-12-12 16:00:47,046 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 57 transitions, 333 flow [2022-12-12 16:00:47,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:47,046 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:00:47,046 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:00:47,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 16:00:47,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:00:47,252 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:00:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:00:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1568208978, now seen corresponding path program 5 times [2022-12-12 16:00:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:00:47,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903190339] [2022-12-12 16:00:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:00:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:00:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:00:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 16:00:47,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:00:47,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903190339] [2022-12-12 16:00:47,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903190339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:00:47,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:00:47,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 16:00:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927243149] [2022-12-12 16:00:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:00:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 16:00:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:00:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 16:00:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 16:00:47,408 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 16:00:47,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 57 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:47,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:00:47,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 16:00:47,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:00:47,776 INFO L130 PetriNetUnfolder]: 2338/3510 cut-off events. [2022-12-12 16:00:47,777 INFO L131 PetriNetUnfolder]: For 7048/7048 co-relation queries the response was YES. [2022-12-12 16:00:47,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 3510 events. 2338/3510 cut-off events. For 7048/7048 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 14330 event pairs, 765 based on Foata normal form. 130/3639 useless extension candidates. Maximal degree in co-relation 11984. Up to 1330 conditions per place. [2022-12-12 16:00:47,803 INFO L137 encePairwiseOnDemand]: 27/30 looper letters, 93 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-12-12 16:00:47,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 766 flow [2022-12-12 16:00:47,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 16:00:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 16:00:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-12-12 16:00:47,805 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.55 [2022-12-12 16:00:47,805 INFO L175 Difference]: Start difference. First operand has 109 places, 57 transitions, 333 flow. Second operand 4 states and 66 transitions. [2022-12-12 16:00:47,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 766 flow [2022-12-12 16:00:47,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 716 flow, removed 20 selfloop flow, removed 12 redundant places. [2022-12-12 16:00:47,812 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 324 flow [2022-12-12 16:00:47,812 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2022-12-12 16:00:47,813 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 34 predicate places. [2022-12-12 16:00:47,813 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 324 flow [2022-12-12 16:00:47,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:47,814 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:00:47,814 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:00:47,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 16:00:47,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:00:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:00:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1660653568, now seen corresponding path program 6 times [2022-12-12 16:00:47,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:00:47,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566882004] [2022-12-12 16:00:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:00:47,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:00:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:00:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 16:00:47,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:00:47,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566882004] [2022-12-12 16:00:47,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566882004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:00:47,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900691653] [2022-12-12 16:00:47,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 16:00:47,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:00:47,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:00:47,996 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) [2022-12-12 16:00:48,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 16:00:48,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-12 16:00:48,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:00:48,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 16:00:48,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:00:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-12 16:00:48,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:00:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 16:00:48,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900691653] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:00:48,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:00:48,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2022-12-12 16:00:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900166243] [2022-12-12 16:00:48,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:00:48,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 16:00:48,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:00:48,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 16:00:48,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-12 16:00:48,427 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 16:00:48,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:48,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:00:48,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 16:00:48,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:00:48,494 INFO L130 PetriNetUnfolder]: 234/450 cut-off events. [2022-12-12 16:00:48,495 INFO L131 PetriNetUnfolder]: For 533/533 co-relation queries the response was YES. [2022-12-12 16:00:48,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 450 events. 234/450 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1321 event pairs, 187 based on Foata normal form. 46/495 useless extension candidates. Maximal degree in co-relation 1269. Up to 402 conditions per place. [2022-12-12 16:00:48,496 INFO L137 encePairwiseOnDemand]: 27/30 looper letters, 47 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2022-12-12 16:00:48,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 52 transitions, 376 flow [2022-12-12 16:00:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 16:00:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 16:00:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-12-12 16:00:48,497 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2022-12-12 16:00:48,497 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 324 flow. Second operand 4 states and 38 transitions. [2022-12-12 16:00:48,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 52 transitions, 376 flow [2022-12-12 16:00:48,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 52 transitions, 327 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-12-12 16:00:48,499 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 217 flow [2022-12-12 16:00:48,499 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2022-12-12 16:00:48,499 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2022-12-12 16:00:48,500 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 217 flow [2022-12-12 16:00:48,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:48,500 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:00:48,501 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:00:48,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 16:00:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 16:00:48,706 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:00:48,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:00:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1021373473, now seen corresponding path program 7 times [2022-12-12 16:00:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:00:48,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129261800] [2022-12-12 16:00:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:00:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:00:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:00:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:00:48,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:00:48,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129261800] [2022-12-12 16:00:48,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129261800] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:00:48,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820255807] [2022-12-12 16:00:48,910 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 16:00:48,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:00:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:00:48,925 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:00:48,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 16:00:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:00:49,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 16:00:49,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:00:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 16:00:49,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:00:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 16:00:49,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820255807] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:00:49,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:00:49,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 17 [2022-12-12 16:00:49,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564966631] [2022-12-12 16:00:49,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:00:49,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 16:00:49,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:00:49,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 16:00:49,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-12-12 16:00:49,192 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 16:00:49,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 217 flow. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:49,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:00:49,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 16:00:49,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:00:49,698 INFO L130 PetriNetUnfolder]: 679/1314 cut-off events. [2022-12-12 16:00:49,698 INFO L131 PetriNetUnfolder]: For 579/579 co-relation queries the response was YES. [2022-12-12 16:00:49,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3437 conditions, 1314 events. 679/1314 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5969 event pairs, 500 based on Foata normal form. 10/1320 useless extension candidates. Maximal degree in co-relation 3421. Up to 441 conditions per place. [2022-12-12 16:00:49,701 INFO L137 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 8 changer transitions 142/189 dead transitions. [2022-12-12 16:00:49,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 189 transitions, 1079 flow [2022-12-12 16:00:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-12 16:00:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-12 16:00:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 179 transitions. [2022-12-12 16:00:49,703 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2594202898550725 [2022-12-12 16:00:49,703 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 217 flow. Second operand 23 states and 179 transitions. [2022-12-12 16:00:49,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 189 transitions, 1079 flow [2022-12-12 16:00:49,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 189 transitions, 1050 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-12 16:00:49,706 INFO L231 Difference]: Finished difference. Result has 96 places, 47 transitions, 269 flow [2022-12-12 16:00:49,706 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=269, PETRI_PLACES=96, PETRI_TRANSITIONS=47} [2022-12-12 16:00:49,706 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2022-12-12 16:00:49,706 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 47 transitions, 269 flow [2022-12-12 16:00:49,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:49,707 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:00:49,707 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:00:49,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 16:00:49,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 16:00:49,912 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:00:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:00:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1449060741, now seen corresponding path program 8 times [2022-12-12 16:00:49,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:00:49,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558087594] [2022-12-12 16:00:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:00:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:00:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:00:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-12 16:00:50,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:00:50,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558087594] [2022-12-12 16:00:50,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558087594] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:00:50,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884629675] [2022-12-12 16:00:50,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 16:00:50,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:00:50,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:00:50,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:00:50,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 16:00:50,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:00:50,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:00:50,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 16:00:50,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:00:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-12 16:00:50,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:00:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-12 16:00:50,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884629675] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:00:50,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:00:50,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-12-12 16:00:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378698481] [2022-12-12 16:00:50,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:00:50,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 16:00:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:00:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 16:00:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-12-12 16:00:50,591 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 16:00:50,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 47 transitions, 269 flow. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:50,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:00:50,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 16:00:50,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:00:50,951 INFO L130 PetriNetUnfolder]: 402/787 cut-off events. [2022-12-12 16:00:50,952 INFO L131 PetriNetUnfolder]: For 508/508 co-relation queries the response was YES. [2022-12-12 16:00:50,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2162 conditions, 787 events. 402/787 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2983 event pairs, 232 based on Foata normal form. 14/799 useless extension candidates. Maximal degree in co-relation 2132. Up to 293 conditions per place. [2022-12-12 16:00:50,954 INFO L137 encePairwiseOnDemand]: 23/30 looper letters, 40 selfloop transitions, 9 changer transitions 65/114 dead transitions. [2022-12-12 16:00:50,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 114 transitions, 750 flow [2022-12-12 16:00:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 16:00:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 16:00:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 108 transitions. [2022-12-12 16:00:50,955 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2571428571428571 [2022-12-12 16:00:50,955 INFO L175 Difference]: Start difference. First operand has 96 places, 47 transitions, 269 flow. Second operand 14 states and 108 transitions. [2022-12-12 16:00:50,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 114 transitions, 750 flow [2022-12-12 16:00:50,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 114 transitions, 666 flow, removed 34 selfloop flow, removed 18 redundant places. [2022-12-12 16:00:50,958 INFO L231 Difference]: Finished difference. Result has 81 places, 48 transitions, 255 flow [2022-12-12 16:00:50,958 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=255, PETRI_PLACES=81, PETRI_TRANSITIONS=48} [2022-12-12 16:00:50,959 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2022-12-12 16:00:50,959 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 48 transitions, 255 flow [2022-12-12 16:00:50,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:00:50,960 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:00:50,960 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:00:50,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 16:00:51,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:00:51,166 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:00:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:00:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash 994749164, now seen corresponding path program 9 times [2022-12-12 16:00:51,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:00:51,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110572955] [2022-12-12 16:00:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:00:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:00:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:00:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:00:57,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:00:57,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110572955] [2022-12-12 16:00:57,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110572955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:00:57,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692508741] [2022-12-12 16:00:57,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 16:00:57,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:00:57,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:00:57,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:00:57,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 16:00:57,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 16:00:57,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:00:57,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-12 16:00:57,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:00:57,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:00:57,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:00:57,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:00:57,707 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-12 16:00:57,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-12-12 16:00:58,064 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-12-12 16:00:58,158 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-12 16:00:58,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-12 16:00:58,246 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:00:58,336 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:00:58,422 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:00:58,517 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-12 16:00:58,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-12 16:00:58,645 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:00:58,788 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-12-12 16:00:58,924 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:00:59,050 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:00:59,174 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:01:01,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:01:01,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:01:01,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 16:01:01,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 16:01:01,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 16:01:01,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:01:01,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 16:01:01,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:01:01,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 16:01:01,714 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-12-12 16:01:01,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 148 treesize of output 51 [2022-12-12 16:01:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:01:01,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:01:11,361 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 115 DAG size of output: 112 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 16:01:26,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-12-12 16:01:26,930 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-12 16:01:26,931 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-12 16:01:26,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 16:01:27,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-12 16:01:27,137 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:933) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 46 more [2022-12-12 16:01:27,140 INFO L158 Benchmark]: Toolchain (without parser) took 714539.76ms. Allocated memory was 180.4MB in the beginning and 744.5MB in the end (delta: 564.1MB). Free memory was 156.9MB in the beginning and 381.7MB in the end (delta: -224.8MB). Peak memory consumption was 340.4MB. Max. memory is 8.0GB. [2022-12-12 16:01:27,140 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 158.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 16:01:27,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.02ms. Allocated memory is still 180.4MB. Free memory was 156.9MB in the beginning and 142.8MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 16:01:27,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.41ms. Allocated memory is still 180.4MB. Free memory was 142.2MB in the beginning and 139.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 16:01:27,141 INFO L158 Benchmark]: Boogie Preprocessor took 41.62ms. Allocated memory is still 180.4MB. Free memory was 139.6MB in the beginning and 137.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 16:01:27,141 INFO L158 Benchmark]: RCFGBuilder took 744.86ms. Allocated memory was 180.4MB in the beginning and 219.2MB in the end (delta: 38.8MB). Free memory was 137.5MB in the beginning and 192.9MB in the end (delta: -55.4MB). Peak memory consumption was 53.2MB. Max. memory is 8.0GB. [2022-12-12 16:01:27,141 INFO L158 Benchmark]: TraceAbstraction took 713497.89ms. Allocated memory was 219.2MB in the beginning and 744.5MB in the end (delta: 525.3MB). Free memory was 191.8MB in the beginning and 381.7MB in the end (delta: -189.8MB). Peak memory consumption was 335.5MB. Max. memory is 8.0GB. [2022-12-12 16:01:27,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 158.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.02ms. Allocated memory is still 180.4MB. Free memory was 156.9MB in the beginning and 142.8MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.41ms. Allocated memory is still 180.4MB. Free memory was 142.2MB in the beginning and 139.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.62ms. Allocated memory is still 180.4MB. Free memory was 139.6MB in the beginning and 137.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 744.86ms. Allocated memory was 180.4MB in the beginning and 219.2MB in the end (delta: 38.8MB). Free memory was 137.5MB in the beginning and 192.9MB in the end (delta: -55.4MB). Peak memory consumption was 53.2MB. Max. memory is 8.0GB. * TraceAbstraction took 713497.89ms. Allocated memory was 219.2MB in the beginning and 744.5MB in the end (delta: 525.3MB). Free memory was 191.8MB in the beginning and 381.7MB in the end (delta: -189.8MB). Peak memory consumption was 335.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 212 PlacesBefore, 34 PlacesAfterwards, 221 TransitionsBefore, 30 TransitionsAfterwards, 1266 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 151 TrivialYvCompositions, 27 ConcurrentYvCompositions, 13 ChoiceCompositions, 191 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 734, independent: 704, independent conditional: 704, independent unconditional: 0, dependent: 30, dependent conditional: 30, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 734, independent: 704, independent conditional: 0, independent unconditional: 704, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 734, independent: 704, independent conditional: 0, independent unconditional: 704, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 734, independent: 704, independent conditional: 0, independent unconditional: 704, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 644, independent: 625, independent conditional: 0, independent unconditional: 625, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 644, independent: 617, independent conditional: 0, independent unconditional: 617, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 138, independent: 78, independent conditional: 0, independent unconditional: 78, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 734, independent: 79, independent conditional: 0, independent unconditional: 79, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 644, unknown conditional: 0, unknown unconditional: 644] , Statistics on independence cache: Total cache size (in pairs): 950, Positive cache size: 931, Positive conditional cache size: 0, Positive unconditional cache size: 931, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...