/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:59:40,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:59:40,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:59:40,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:59:40,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:59:40,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:59:40,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:59:40,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:59:40,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:59:40,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:59:40,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:59:40,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:59:40,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:59:40,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:59:40,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:59:40,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:59:40,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:59:40,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:59:40,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:59:40,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:59:40,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:59:40,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:59:40,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:59:40,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:59:40,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:59:40,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:59:40,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:59:40,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:59:40,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:59:40,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:59:40,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:59:40,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:59:40,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:59:40,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:59:40,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:59:40,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:59:40,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:59:40,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:59:40,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:59:40,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:59:40,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:59:40,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 16:59:41,000 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:59:41,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:59:41,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:59:41,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:59:41,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:59:41,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:59:41,001 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:59:41,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:59:41,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:59:41,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:59:41,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:59:41,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:59:41,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:59:41,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:59:41,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:59:41,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:59:41,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:59:41,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:59:41,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:59:41,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:59:41,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:59:41,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:59:41,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:59:41,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:59:41,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:59:41,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:59:41,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:59:41,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:59:41,274 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:59:41,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2022-12-06 16:59:42,240 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:59:42,430 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:59:42,431 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2022-12-06 16:59:42,451 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296812d0c/ff3dd854d67b441c936352c6b849664c/FLAGee7cafdb6 [2022-12-06 16:59:42,463 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296812d0c/ff3dd854d67b441c936352c6b849664c [2022-12-06 16:59:42,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:59:42,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:59:42,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:59:42,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:59:42,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:59:42,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13bad823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42, skipping insertion in model container [2022-12-06 16:59:42,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:59:42,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:59:42,612 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/bench-exp2x9.wvr.c[2669,2682] [2022-12-06 16:59:42,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:59:42,623 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:59:42,637 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/bench-exp2x9.wvr.c[2669,2682] [2022-12-06 16:59:42,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:59:42,646 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:59:42,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42 WrapperNode [2022-12-06 16:59:42,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:59:42,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:59:42,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:59:42,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:59:42,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,682 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-12-06 16:59:42,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:59:42,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:59:42,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:59:42,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:59:42,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,698 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:59:42,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:59:42,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:59:42,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:59:42,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (1/1) ... [2022-12-06 16:59:42,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:59:42,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:59:42,744 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) [2022-12-06 16:59:42,752 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 [2022-12-06 16:59:42,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:59:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 16:59:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 16:59:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 16:59:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 16:59:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 16:59:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 16:59:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-06 16:59:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-06 16:59:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:59:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:59:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:59:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:59:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:59:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 16:59:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:59:42,777 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:59:42,836 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:59:42,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:59:43,099 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:59:43,105 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:59:43,105 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-06 16:59:43,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:59:43 BoogieIcfgContainer [2022-12-06 16:59:43,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:59:43,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:59:43,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:59:43,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:59:43,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:59:42" (1/3) ... [2022-12-06 16:59:43,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce5404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:59:43, skipping insertion in model container [2022-12-06 16:59:43,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:59:42" (2/3) ... [2022-12-06 16:59:43,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce5404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:59:43, skipping insertion in model container [2022-12-06 16:59:43,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:59:43" (3/3) ... [2022-12-06 16:59:43,111 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-12-06 16:59:43,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:59:43,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:59:43,133 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:59:43,255 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-06 16:59:43,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 142 transitions, 316 flow [2022-12-06 16:59:43,373 INFO L130 PetriNetUnfolder]: 10/138 cut-off events. [2022-12-06 16:59:43,374 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-06 16:59:43,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 10/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 134 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-12-06 16:59:43,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 142 transitions, 316 flow [2022-12-06 16:59:43,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 126 transitions, 276 flow [2022-12-06 16:59:43,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:59:43,396 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;@b7b2409, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:59:43,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-06 16:59:43,431 INFO L130 PetriNetUnfolder]: 10/125 cut-off events. [2022-12-06 16:59:43,431 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-06 16:59:43,431 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:43,432 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:59:43,432 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 2 more)] === [2022-12-06 16:59:43,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:43,439 INFO L85 PathProgramCache]: Analyzing trace with hash 555192537, now seen corresponding path program 1 times [2022-12-06 16:59:43,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:43,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33258113] [2022-12-06 16:59:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:44,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33258113] [2022-12-06 16:59:44,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33258113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:44,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:44,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:59:44,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486191000] [2022-12-06 16:59:44,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:44,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:59:44,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:59:44,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:59:44,412 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2022-12-06 16:59:44,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:44,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:44,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2022-12-06 16:59:44,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:46,985 INFO L130 PetriNetUnfolder]: 24847/35640 cut-off events. [2022-12-06 16:59:46,985 INFO L131 PetriNetUnfolder]: For 3439/3492 co-relation queries the response was YES. [2022-12-06 16:59:47,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71453 conditions, 35640 events. 24847/35640 cut-off events. For 3439/3492 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 226853 event pairs, 17643 based on Foata normal form. 3/31645 useless extension candidates. Maximal degree in co-relation 63530. Up to 32788 conditions per place. [2022-12-06 16:59:47,162 INFO L137 encePairwiseOnDemand]: 124/142 looper letters, 71 selfloop transitions, 7 changer transitions 7/143 dead transitions. [2022-12-06 16:59:47,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 143 transitions, 501 flow [2022-12-06 16:59:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:59:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:59:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 754 transitions. [2022-12-06 16:59:47,172 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5899843505477308 [2022-12-06 16:59:47,174 INFO L294 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2022-12-06 16:59:47,175 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 143 transitions, 501 flow [2022-12-06 16:59:47,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:47,175 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:47,175 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:59:47,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:59:47,176 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 2 more)] === [2022-12-06 16:59:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash -815821588, now seen corresponding path program 1 times [2022-12-06 16:59:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:47,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607410434] [2022-12-06 16:59:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:47,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:47,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607410434] [2022-12-06 16:59:47,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607410434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:47,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:47,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:59:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197590675] [2022-12-06 16:59:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:47,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:59:47,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:47,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:59:47,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:59:47,410 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 142 [2022-12-06 16:59:47,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 143 transitions, 501 flow. Second operand has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:47,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:47,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 142 [2022-12-06 16:59:47,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:50,393 INFO L130 PetriNetUnfolder]: 32728/46757 cut-off events. [2022-12-06 16:59:50,393 INFO L131 PetriNetUnfolder]: For 25193/34447 co-relation queries the response was YES. [2022-12-06 16:59:50,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122148 conditions, 46757 events. 32728/46757 cut-off events. For 25193/34447 co-relation queries the response was YES. Maximal size of possible extension queue 1571. Compared 308850 event pairs, 16168 based on Foata normal form. 10/41332 useless extension candidates. Maximal degree in co-relation 105851. Up to 43726 conditions per place. [2022-12-06 16:59:50,691 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 109 selfloop transitions, 16 changer transitions 9/210 dead transitions. [2022-12-06 16:59:50,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 210 transitions, 1094 flow [2022-12-06 16:59:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 16:59:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 16:59:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 818 transitions. [2022-12-06 16:59:50,694 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7200704225352113 [2022-12-06 16:59:50,695 INFO L294 CegarLoopForPetriNet]: 129 programPoint places, 15 predicate places. [2022-12-06 16:59:50,697 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 210 transitions, 1094 flow [2022-12-06 16:59:50,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:50,702 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:50,702 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:59:50,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:59:50,703 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 2 more)] === [2022-12-06 16:59:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1119336622, now seen corresponding path program 2 times [2022-12-06 16:59:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:50,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202806931] [2022-12-06 16:59:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:51,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202806931] [2022-12-06 16:59:51,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202806931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:51,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:51,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:59:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321799336] [2022-12-06 16:59:51,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:51,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:59:51,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:59:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:59:51,103 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 142 [2022-12-06 16:59:51,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 210 transitions, 1094 flow. Second operand has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:51,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:51,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 142 [2022-12-06 16:59:51,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:54,662 INFO L130 PetriNetUnfolder]: 32659/47470 cut-off events. [2022-12-06 16:59:54,662 INFO L131 PetriNetUnfolder]: For 27288/49280 co-relation queries the response was YES. [2022-12-06 16:59:54,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166728 conditions, 47470 events. 32659/47470 cut-off events. For 27288/49280 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 321975 event pairs, 17127 based on Foata normal form. 63/42131 useless extension candidates. Maximal degree in co-relation 145256. Up to 43690 conditions per place. [2022-12-06 16:59:54,917 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 150 selfloop transitions, 13 changer transitions 9/228 dead transitions. [2022-12-06 16:59:54,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 228 transitions, 1557 flow [2022-12-06 16:59:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 16:59:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 16:59:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2022-12-06 16:59:54,920 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6016096579476862 [2022-12-06 16:59:54,920 INFO L294 CegarLoopForPetriNet]: 129 programPoint places, 21 predicate places. [2022-12-06 16:59:54,920 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 228 transitions, 1557 flow [2022-12-06 16:59:54,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:54,921 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:59:54,921 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:59:54,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:59:54,921 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 2 more)] === [2022-12-06 16:59:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:59:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 255517486, now seen corresponding path program 1 times [2022-12-06 16:59:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:59:54,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026848045] [2022-12-06 16:59:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:59:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:59:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:59:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:59:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:59:55,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026848045] [2022-12-06 16:59:55,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026848045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:59:55,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:59:55,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:59:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756189115] [2022-12-06 16:59:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:59:55,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:59:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:59:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:59:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:59:55,125 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 142 [2022-12-06 16:59:55,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 228 transitions, 1557 flow. Second operand has 7 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:59:55,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:59:55,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 142 [2022-12-06 16:59:55,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:59:59,453 INFO L130 PetriNetUnfolder]: 40459/57889 cut-off events. [2022-12-06 16:59:59,453 INFO L131 PetriNetUnfolder]: For 34537/93140 co-relation queries the response was YES. [2022-12-06 16:59:59,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264353 conditions, 57889 events. 40459/57889 cut-off events. For 34537/93140 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 399877 event pairs, 11030 based on Foata normal form. 73/51762 useless extension candidates. Maximal degree in co-relation 232043. Up to 54604 conditions per place. [2022-12-06 17:00:00,009 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 249 selfloop transitions, 26 changer transitions 12/343 dead transitions. [2022-12-06 17:00:00,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 343 transitions, 3109 flow [2022-12-06 17:00:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 17:00:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 17:00:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 779 transitions. [2022-12-06 17:00:00,011 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6095461658841941 [2022-12-06 17:00:00,012 INFO L294 CegarLoopForPetriNet]: 129 programPoint places, 29 predicate places. [2022-12-06 17:00:00,012 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 343 transitions, 3109 flow [2022-12-06 17:00:00,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:00,012 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:00,012 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:00:00,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:00:00,013 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 2 more)] === [2022-12-06 17:00:00,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2133825514, now seen corresponding path program 2 times [2022-12-06 17:00:00,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:00,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710404399] [2022-12-06 17:00:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:00,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:00:00,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:00,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710404399] [2022-12-06 17:00:00,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710404399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:00,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:00,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:00:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727893761] [2022-12-06 17:00:00,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:00,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:00:00,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:00:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:00:00,158 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 142 [2022-12-06 17:00:00,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 343 transitions, 3109 flow. Second operand has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:00,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:00,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 142 [2022-12-06 17:00:00,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:04,986 INFO L130 PetriNetUnfolder]: 42395/64049 cut-off events. [2022-12-06 17:00:04,987 INFO L131 PetriNetUnfolder]: For 50095/95421 co-relation queries the response was YES. [2022-12-06 17:00:05,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318592 conditions, 64049 events. 42395/64049 cut-off events. For 50095/95421 co-relation queries the response was YES. Maximal size of possible extension queue 2613. Compared 488809 event pairs, 11185 based on Foata normal form. 96/57201 useless extension candidates. Maximal degree in co-relation 279643. Up to 56837 conditions per place. [2022-12-06 17:00:05,670 INFO L137 encePairwiseOnDemand]: 129/142 looper letters, 372 selfloop transitions, 49 changer transitions 13/546 dead transitions. [2022-12-06 17:00:05,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 546 transitions, 6162 flow [2022-12-06 17:00:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:00:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:00:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 807 transitions. [2022-12-06 17:00:05,672 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.710387323943662 [2022-12-06 17:00:05,673 INFO L294 CegarLoopForPetriNet]: 129 programPoint places, 35 predicate places. [2022-12-06 17:00:05,673 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 546 transitions, 6162 flow [2022-12-06 17:00:05,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:05,673 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:05,674 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:00:05,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:00:05,674 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 2 more)] === [2022-12-06 17:00:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash -814030212, now seen corresponding path program 1 times [2022-12-06 17:00:05,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:05,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625745362] [2022-12-06 17:00:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:05,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:00:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:05,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625745362] [2022-12-06 17:00:05,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625745362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:05,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:05,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:00:05,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362844243] [2022-12-06 17:00:05,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:05,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:00:05,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:00:05,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:00:05,960 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 142 [2022-12-06 17:00:05,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 546 transitions, 6162 flow. Second operand has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:05,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:05,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 142 [2022-12-06 17:00:05,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:10,952 INFO L130 PetriNetUnfolder]: 42361/61309 cut-off events. [2022-12-06 17:00:10,953 INFO L131 PetriNetUnfolder]: For 49097/243483 co-relation queries the response was YES. [2022-12-06 17:00:11,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372750 conditions, 61309 events. 42361/61309 cut-off events. For 49097/243483 co-relation queries the response was YES. Maximal size of possible extension queue 2436. Compared 438464 event pairs, 8633 based on Foata normal form. 147/54877 useless extension candidates. Maximal degree in co-relation 368412. Up to 56818 conditions per place. [2022-12-06 17:00:11,694 INFO L137 encePairwiseOnDemand]: 131/142 looper letters, 430 selfloop transitions, 22 changer transitions 22/530 dead transitions. [2022-12-06 17:00:11,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 530 transitions, 6904 flow [2022-12-06 17:00:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:00:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:00:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2022-12-06 17:00:11,696 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5995975855130785 [2022-12-06 17:00:11,699 INFO L294 CegarLoopForPetriNet]: 129 programPoint places, 41 predicate places. [2022-12-06 17:00:11,699 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 530 transitions, 6904 flow [2022-12-06 17:00:11,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:11,700 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:11,700 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:00:11,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 17:00:11,700 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 2 more)] === [2022-12-06 17:00:11,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1218615514, now seen corresponding path program 2 times [2022-12-06 17:00:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:11,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788182701] [2022-12-06 17:00:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:11,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:00:11,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:11,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788182701] [2022-12-06 17:00:11,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788182701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:00:11,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211759490] [2022-12-06 17:00:11,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:00:11,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:00:11,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:00:11,907 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) [2022-12-06 17:00:11,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:00:12,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:00:12,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:00:12,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-06 17:00:12,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:00:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:00:12,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:00:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:00:12,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211759490] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:00:12,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:00:12,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-12-06 17:00:12,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457752150] [2022-12-06 17:00:12,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:00:12,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 17:00:12,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:12,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 17:00:12,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-06 17:00:12,530 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 142 [2022-12-06 17:00:12,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 530 transitions, 6904 flow. Second operand has 10 states, 10 states have (on average 94.6) internal successors, (946), 10 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:12,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:12,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 142 [2022-12-06 17:00:12,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:00:21,400 INFO L130 PetriNetUnfolder]: 50735/76735 cut-off events. [2022-12-06 17:00:21,400 INFO L131 PetriNetUnfolder]: For 83970/279154 co-relation queries the response was YES. [2022-12-06 17:00:21,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496888 conditions, 76735 events. 50735/76735 cut-off events. For 83970/279154 co-relation queries the response was YES. Maximal size of possible extension queue 2737. Compared 597227 event pairs, 12012 based on Foata normal form. 372/69410 useless extension candidates. Maximal degree in co-relation 486819. Up to 68509 conditions per place. [2022-12-06 17:00:22,419 INFO L137 encePairwiseOnDemand]: 128/142 looper letters, 604 selfloop transitions, 57 changer transitions 23/799 dead transitions. [2022-12-06 17:00:22,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 799 transitions, 12219 flow [2022-12-06 17:00:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-06 17:00:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-06 17:00:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1382 transitions. [2022-12-06 17:00:22,422 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6951710261569416 [2022-12-06 17:00:22,422 INFO L294 CegarLoopForPetriNet]: 129 programPoint places, 54 predicate places. [2022-12-06 17:00:22,422 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 799 transitions, 12219 flow [2022-12-06 17:00:22,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.6) internal successors, (946), 10 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:22,423 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:00:22,423 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:00:22,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 17:00:22,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:00:22,631 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 2 more)] === [2022-12-06 17:00:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:00:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash 418600220, now seen corresponding path program 1 times [2022-12-06 17:00:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:00:22,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224542741] [2022-12-06 17:00:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:00:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:00:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:00:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:00:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:00:22,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224542741] [2022-12-06 17:00:22,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224542741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:00:22,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:00:22,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:00:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257588003] [2022-12-06 17:00:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:00:22,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:00:22,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:00:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:00:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:00:22,849 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 142 [2022-12-06 17:00:22,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 799 transitions, 12219 flow. Second operand has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:00:22,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:00:22,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 142 [2022-12-06 17:00:22,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand