/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 20:36:35,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 20:36:35,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 20:36:35,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 20:36:35,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 20:36:35,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 20:36:35,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 20:36:35,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 20:36:35,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 20:36:35,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 20:36:35,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 20:36:35,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 20:36:35,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 20:36:35,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 20:36:35,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 20:36:35,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 20:36:35,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 20:36:35,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 20:36:35,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 20:36:35,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 20:36:35,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 20:36:35,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 20:36:35,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 20:36:35,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 20:36:35,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 20:36:35,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 20:36:35,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 20:36:35,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 20:36:35,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 20:36:35,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 20:36:35,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 20:36:35,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 20:36:35,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 20:36:35,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 20:36:35,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 20:36:35,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 20:36:35,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 20:36:35,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 20:36:35,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 20:36:35,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 20:36:35,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 20:36:35,784 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 20:36:35,821 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 20:36:35,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 20:36:35,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 20:36:35,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 20:36:35,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 20:36:35,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 20:36:35,825 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 20:36:35,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 20:36:35,825 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 20:36:35,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 20:36:35,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 20:36:35,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 20:36:35,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 20:36:35,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 20:36:35,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 20:36:35,827 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 20:36:35,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 20:36:35,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 20:36:35,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 20:36:35,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 20:36:35,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 20:36:35,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 20:36:35,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 20:36:35,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:36:35,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 20:36:35,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 20:36:35,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 20:36:35,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 20:36:35,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 20:36:35,830 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 20:36:35,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 20:36:36,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 20:36:36,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 20:36:36,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 20:36:36,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 20:36:36,207 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 20:36:36,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-12-12 20:36:37,384 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 20:36:37,583 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 20:36:37,584 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-12-12 20:36:37,597 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee89506b/7caa42f41e2e4c85b2d013ff67583b25/FLAGb03733d17 [2022-12-12 20:36:37,613 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee89506b/7caa42f41e2e4c85b2d013ff67583b25 [2022-12-12 20:36:37,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 20:36:37,616 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 20:36:37,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 20:36:37,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 20:36:37,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 20:36:37,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce2177c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37, skipping insertion in model container [2022-12-12 20:36:37,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 20:36:37,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 20:36:37,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:36:37,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:36:37,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:36:37,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:36:37,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:36:37,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:36:37,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:36:37,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:36:37,815 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-12-12 20:36:37,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:36:37,832 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 20:36:37,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:36:37,850 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:36:37,850 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:36:37,851 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:36:37,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:36:37,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:36:37,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:36:37,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:36:37,872 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-12-12 20:36:37,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:36:37,885 INFO L208 MainTranslator]: Completed translation [2022-12-12 20:36:37,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37 WrapperNode [2022-12-12 20:36:37,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 20:36:37,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 20:36:37,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 20:36:37,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 20:36:37,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,937 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2022-12-12 20:36:37,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 20:36:37,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 20:36:37,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 20:36:37,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 20:36:37,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,974 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 20:36:37,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 20:36:37,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 20:36:37,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 20:36:37,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (1/1) ... [2022-12-12 20:36:37,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:36:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:38,010 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 20:36:38,016 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 20:36:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 20:36:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 20:36:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 20:36:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 20:36:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 20:36:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 20:36:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 20:36:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 20:36:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 20:36:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 20:36:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 20:36:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 20:36:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 20:36:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 20:36:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 20:36:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 20:36:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 20:36:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 20:36:38,050 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 20:36:38,146 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 20:36:38,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 20:36:38,439 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 20:36:38,496 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 20:36:38,496 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 20:36:38,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:36:38 BoogieIcfgContainer [2022-12-12 20:36:38,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 20:36:38,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 20:36:38,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 20:36:38,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 20:36:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 08:36:37" (1/3) ... [2022-12-12 20:36:38,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652941e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:36:38, skipping insertion in model container [2022-12-12 20:36:38,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:36:37" (2/3) ... [2022-12-12 20:36:38,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652941e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:36:38, skipping insertion in model container [2022-12-12 20:36:38,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:36:38" (3/3) ... [2022-12-12 20:36:38,506 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-12-12 20:36:38,521 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 20:36:38,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 20:36:38,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 20:36:38,592 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-12 20:36:38,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 280 flow [2022-12-12 20:36:38,717 INFO L130 PetriNetUnfolder]: 10/120 cut-off events. [2022-12-12 20:36:38,717 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 20:36:38,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 120 events. 10/120 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-12-12 20:36:38,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 280 flow [2022-12-12 20:36:38,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 108 transitions, 240 flow [2022-12-12 20:36:38,733 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 20:36:38,749 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 108 transitions, 240 flow [2022-12-12 20:36:38,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions, 240 flow [2022-12-12 20:36:38,787 INFO L130 PetriNetUnfolder]: 10/108 cut-off events. [2022-12-12 20:36:38,788 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 20:36:38,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 108 events. 10/108 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-12-12 20:36:38,791 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 108 transitions, 240 flow [2022-12-12 20:36:38,791 INFO L226 LiptonReduction]: Number of co-enabled transitions 1224 [2022-12-12 20:36:42,631 INFO L241 LiptonReduction]: Total number of compositions: 83 [2022-12-12 20:36:42,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 20:36:42,660 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;@29c811aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 20:36:42,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 20:36:42,673 INFO L130 PetriNetUnfolder]: 4/24 cut-off events. [2022-12-12 20:36:42,673 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 20:36:42,673 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:42,674 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 20:36:42,674 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)] === [2022-12-12 20:36:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:42,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2052267608, now seen corresponding path program 1 times [2022-12-12 20:36:42,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:42,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250534986] [2022-12-12 20:36:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:42,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:43,131 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 20:36:43,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:43,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250534986] [2022-12-12 20:36:43,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250534986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:36:43,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:36:43,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 20:36:43,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385994359] [2022-12-12 20:36:43,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:43,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 20:36:43,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 20:36:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 20:36:43,158 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:43,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 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 20:36:43,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:43,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:43,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:43,260 INFO L130 PetriNetUnfolder]: 431/611 cut-off events. [2022-12-12 20:36:43,260 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-12 20:36:43,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 611 events. 431/611 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1712 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 928. Up to 405 conditions per place. [2022-12-12 20:36:43,266 INFO L137 encePairwiseOnDemand]: 19/25 looper letters, 39 selfloop transitions, 3 changer transitions 3/45 dead transitions. [2022-12-12 20:36:43,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 225 flow [2022-12-12 20:36:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 20:36:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 20:36:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2022-12-12 20:36:43,276 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.64 [2022-12-12 20:36:43,279 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-12-12 20:36:43,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 45 transitions, 225 flow [2022-12-12 20:36:43,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 42 transitions, 207 flow [2022-12-12 20:36:43,284 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 42 transitions, 207 flow [2022-12-12 20:36:43,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 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 20:36:43,284 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:43,285 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 20:36:43,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 20:36:43,285 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)] === [2022-12-12 20:36:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1346749667, now seen corresponding path program 1 times [2022-12-12 20:36:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:43,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126363838] [2022-12-12 20:36:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:43,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:43,525 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 20:36:43,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:43,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126363838] [2022-12-12 20:36:43,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126363838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:36:43,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:36:43,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 20:36:43,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375152709] [2022-12-12 20:36:43,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:43,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:36:43,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:43,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:36:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:36:43,534 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:43,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 42 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 5.5) 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 20:36:43,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:43,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:43,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:43,716 INFO L130 PetriNetUnfolder]: 485/702 cut-off events. [2022-12-12 20:36:43,716 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-12 20:36:43,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 702 events. 485/702 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2163 event pairs, 45 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 1924. Up to 503 conditions per place. [2022-12-12 20:36:43,724 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 56 selfloop transitions, 4 changer transitions 11/71 dead transitions. [2022-12-12 20:36:43,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 71 transitions, 489 flow [2022-12-12 20:36:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:36:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:36:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2022-12-12 20:36:43,725 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.61 [2022-12-12 20:36:43,726 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2022-12-12 20:36:43,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 71 transitions, 489 flow [2022-12-12 20:36:43,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 60 transitions, 411 flow [2022-12-12 20:36:43,730 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 60 transitions, 411 flow [2022-12-12 20:36:43,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) 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 20:36:43,730 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:43,730 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 20:36:43,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 20:36:43,731 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)] === [2022-12-12 20:36:43,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash -38283032, now seen corresponding path program 1 times [2022-12-12 20:36:43,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:43,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853658752] [2022-12-12 20:36:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:43,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:43,920 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 20:36:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:43,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853658752] [2022-12-12 20:36:43,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853658752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:36:43,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:36:43,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 20:36:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905889573] [2022-12-12 20:36:43,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:43,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:36:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:36:43,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:36:43,929 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:43,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 60 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 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 20:36:43,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:43,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:43,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:44,116 INFO L130 PetriNetUnfolder]: 587/828 cut-off events. [2022-12-12 20:36:44,117 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-12-12 20:36:44,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 828 events. 587/828 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2441 event pairs, 81 based on Foata normal form. 8/556 useless extension candidates. Maximal degree in co-relation 3016. Up to 771 conditions per place. [2022-12-12 20:36:44,123 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 82 selfloop transitions, 8 changer transitions 4/94 dead transitions. [2022-12-12 20:36:44,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 94 transitions, 821 flow [2022-12-12 20:36:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:36:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:36:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2022-12-12 20:36:44,127 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.59 [2022-12-12 20:36:44,128 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2022-12-12 20:36:44,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 94 transitions, 821 flow [2022-12-12 20:36:44,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 90 transitions, 789 flow [2022-12-12 20:36:44,135 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 90 transitions, 789 flow [2022-12-12 20:36:44,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 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 20:36:44,136 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:44,136 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 20:36:44,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 20:36:44,136 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)] === [2022-12-12 20:36:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash -749334116, now seen corresponding path program 2 times [2022-12-12 20:36:44,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:44,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060446373] [2022-12-12 20:36:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:44,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:44,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060446373] [2022-12-12 20:36:44,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060446373] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:44,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729209718] [2022-12-12 20:36:44,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:36:44,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:44,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:44,325 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 20:36:44,341 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 20:36:44,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:36:44,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:36:44,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 20:36:44,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:44,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:36:44,626 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 20:36:44,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729209718] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:44,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 20:36:44,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2022-12-12 20:36:44,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886243773] [2022-12-12 20:36:44,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:44,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:36:44,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:36:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-12 20:36:44,628 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:44,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 90 transitions, 789 flow. Second operand has 4 states, 4 states have (on average 5.5) 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 20:36:44,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:44,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:44,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:44,802 INFO L130 PetriNetUnfolder]: 917/1298 cut-off events. [2022-12-12 20:36:44,802 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-12-12 20:36:44,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 1298 events. 917/1298 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4462 event pairs, 41 based on Foata normal form. 0/870 useless extension candidates. Maximal degree in co-relation 5774. Up to 1253 conditions per place. [2022-12-12 20:36:44,812 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 126 selfloop transitions, 11 changer transitions 0/137 dead transitions. [2022-12-12 20:36:44,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 137 transitions, 1478 flow [2022-12-12 20:36:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:36:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:36:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-12-12 20:36:44,814 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.66 [2022-12-12 20:36:44,814 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2022-12-12 20:36:44,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 137 transitions, 1478 flow [2022-12-12 20:36:44,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 137 transitions, 1478 flow [2022-12-12 20:36:44,824 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 137 transitions, 1478 flow [2022-12-12 20:36:44,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) 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 20:36:44,824 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:44,824 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 20:36:44,832 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 20:36:45,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:45,031 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)] === [2022-12-12 20:36:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1686738454, now seen corresponding path program 3 times [2022-12-12 20:36:45,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:45,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641128659] [2022-12-12 20:36:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:45,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:45,197 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 20:36:45,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:45,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641128659] [2022-12-12 20:36:45,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641128659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:36:45,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:36:45,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 20:36:45,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312761694] [2022-12-12 20:36:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:45,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:36:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:36:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:36:45,203 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:45,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 137 transitions, 1478 flow. Second operand has 4 states, 4 states have (on average 5.5) 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 20:36:45,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:45,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:45,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:45,502 INFO L130 PetriNetUnfolder]: 1733/2464 cut-off events. [2022-12-12 20:36:45,502 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2022-12-12 20:36:45,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15108 conditions, 2464 events. 1733/2464 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9834 event pairs, 18 based on Foata normal form. 10/1662 useless extension candidates. Maximal degree in co-relation 14080. Up to 2419 conditions per place. [2022-12-12 20:36:45,529 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 305 selfloop transitions, 29 changer transitions 5/339 dead transitions. [2022-12-12 20:36:45,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 339 transitions, 4305 flow [2022-12-12 20:36:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:36:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:36:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2022-12-12 20:36:45,533 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.576 [2022-12-12 20:36:45,536 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2022-12-12 20:36:45,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 339 transitions, 4305 flow [2022-12-12 20:36:45,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 334 transitions, 4242 flow [2022-12-12 20:36:45,615 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 334 transitions, 4242 flow [2022-12-12 20:36:45,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) 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 20:36:45,616 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:45,616 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 20:36:45,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 20:36:45,616 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)] === [2022-12-12 20:36:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1949285127, now seen corresponding path program 2 times [2022-12-12 20:36:45,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:45,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654841453] [2022-12-12 20:36:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:45,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:45,745 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 20:36:45,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:45,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654841453] [2022-12-12 20:36:45,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654841453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:36:45,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:36:45,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 20:36:45,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336447459] [2022-12-12 20:36:45,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:45,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:36:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:36:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:36:45,748 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:45,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 334 transitions, 4242 flow. Second operand has 4 states, 4 states have (on average 5.5) 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 20:36:45,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:45,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:45,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:46,112 INFO L130 PetriNetUnfolder]: 1700/2427 cut-off events. [2022-12-12 20:36:46,112 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2022-12-12 20:36:46,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17312 conditions, 2427 events. 1700/2427 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9698 event pairs, 46 based on Foata normal form. 26/1645 useless extension candidates. Maximal degree in co-relation 16123. Up to 2393 conditions per place. [2022-12-12 20:36:46,131 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 308 selfloop transitions, 10 changer transitions 23/341 dead transitions. [2022-12-12 20:36:46,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 341 transitions, 5017 flow [2022-12-12 20:36:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:36:46,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:36:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2022-12-12 20:36:46,133 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.616 [2022-12-12 20:36:46,138 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2022-12-12 20:36:46,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 341 transitions, 5017 flow [2022-12-12 20:36:46,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 318 transitions, 4677 flow [2022-12-12 20:36:46,157 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 318 transitions, 4677 flow [2022-12-12 20:36:46,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) 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 20:36:46,157 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:46,157 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 20:36:46,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 20:36:46,158 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)] === [2022-12-12 20:36:46,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:46,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2144818330, now seen corresponding path program 4 times [2022-12-12 20:36:46,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:46,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136638281] [2022-12-12 20:36:46,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:46,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:46,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136638281] [2022-12-12 20:36:46,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136638281] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:46,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747621067] [2022-12-12 20:36:46,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:36:46,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:46,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:46,292 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 20:36:46,319 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 20:36:46,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:36:46,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:36:46,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 20:36:46,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:46,485 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 20:36:46,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 20:36:46,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747621067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:36:46,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 20:36:46,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-12 20:36:46,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693989634] [2022-12-12 20:36:46,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:46,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:36:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:36:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 20:36:46,487 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:46,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 318 transitions, 4677 flow. Second operand has 4 states, 4 states have (on average 5.5) 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 20:36:46,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:46,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:46,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:46,880 INFO L130 PetriNetUnfolder]: 2062/2913 cut-off events. [2022-12-12 20:36:46,881 INFO L131 PetriNetUnfolder]: For 449/449 co-relation queries the response was YES. [2022-12-12 20:36:46,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23652 conditions, 2913 events. 2062/2913 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11833 event pairs, 36 based on Foata normal form. 0/2003 useless extension candidates. Maximal degree in co-relation 22222. Up to 2895 conditions per place. [2022-12-12 20:36:46,905 INFO L137 encePairwiseOnDemand]: 21/25 looper letters, 422 selfloop transitions, 22 changer transitions 0/444 dead transitions. [2022-12-12 20:36:46,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 444 transitions, 7392 flow [2022-12-12 20:36:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:36:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:36:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-12-12 20:36:46,906 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.63 [2022-12-12 20:36:46,907 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2022-12-12 20:36:46,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 444 transitions, 7392 flow [2022-12-12 20:36:46,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 444 transitions, 7392 flow [2022-12-12 20:36:46,931 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 444 transitions, 7392 flow [2022-12-12 20:36:46,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) 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 20:36:46,931 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:46,931 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 20:36:46,944 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 20:36:47,142 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,SelfDestructingSolverStorable6 [2022-12-12 20:36:47,142 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)] === [2022-12-12 20:36:47,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:47,143 INFO L85 PathProgramCache]: Analyzing trace with hash 25076559, now seen corresponding path program 3 times [2022-12-12 20:36:47,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:47,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252598770] [2022-12-12 20:36:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:47,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:47,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:47,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252598770] [2022-12-12 20:36:47,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252598770] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:47,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730528636] [2022-12-12 20:36:47,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:36:47,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:47,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:47,304 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 20:36:47,306 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 20:36:47,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:36:47,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:36:47,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 20:36:47,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:47,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:36:47,580 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 20:36:47,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730528636] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:47,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 20:36:47,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2022-12-12 20:36:47,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190500530] [2022-12-12 20:36:47,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:47,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:36:47,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:47,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:36:47,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-12 20:36:47,582 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:47,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 444 transitions, 7392 flow. Second operand has 4 states, 4 states have (on average 5.5) 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 20:36:47,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:47,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:47,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:47,965 INFO L130 PetriNetUnfolder]: 1926/2709 cut-off events. [2022-12-12 20:36:47,965 INFO L131 PetriNetUnfolder]: For 439/439 co-relation queries the response was YES. [2022-12-12 20:36:47,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24680 conditions, 2709 events. 1926/2709 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10688 event pairs, 0 based on Foata normal form. 32/1883 useless extension candidates. Maximal degree in co-relation 23119. Up to 2691 conditions per place. [2022-12-12 20:36:48,009 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 462 selfloop transitions, 24 changer transitions 32/518 dead transitions. [2022-12-12 20:36:48,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 518 transitions, 9636 flow [2022-12-12 20:36:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:36:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:36:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2022-12-12 20:36:48,010 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.59 [2022-12-12 20:36:48,011 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2022-12-12 20:36:48,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 518 transitions, 9636 flow [2022-12-12 20:36:48,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 486 transitions, 9057 flow [2022-12-12 20:36:48,032 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 486 transitions, 9057 flow [2022-12-12 20:36:48,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) 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 20:36:48,032 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:48,032 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] [2022-12-12 20:36:48,042 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 20:36:48,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:48,238 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 2 more)] === [2022-12-12 20:36:48,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1502298727, now seen corresponding path program 1 times [2022-12-12 20:36:48,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:48,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461719603] [2022-12-12 20:36:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:48,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:48,405 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 20:36:48,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:48,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461719603] [2022-12-12 20:36:48,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461719603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:36:48,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:36:48,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 20:36:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256918784] [2022-12-12 20:36:48,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:48,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:36:48,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:36:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:36:48,407 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:48,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 486 transitions, 9057 flow. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 20:36:48,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:48,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:48,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:48,786 INFO L130 PetriNetUnfolder]: 1475/2040 cut-off events. [2022-12-12 20:36:48,786 INFO L131 PetriNetUnfolder]: For 299/299 co-relation queries the response was YES. [2022-12-12 20:36:48,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20624 conditions, 2040 events. 1475/2040 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7239 event pairs, 0 based on Foata normal form. 0/1458 useless extension candidates. Maximal degree in co-relation 19472. Up to 2025 conditions per place. [2022-12-12 20:36:48,800 INFO L137 encePairwiseOnDemand]: 21/25 looper letters, 393 selfloop transitions, 27 changer transitions 0/420 dead transitions. [2022-12-12 20:36:48,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 420 transitions, 8643 flow [2022-12-12 20:36:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:36:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:36:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2022-12-12 20:36:48,801 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.53 [2022-12-12 20:36:48,802 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2022-12-12 20:36:48,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 420 transitions, 8643 flow [2022-12-12 20:36:48,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 420 transitions, 8643 flow [2022-12-12 20:36:48,818 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 420 transitions, 8643 flow [2022-12-12 20:36:48,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 20:36:48,818 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:48,818 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 20:36:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 20:36:48,819 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 2 more)] === [2022-12-12 20:36:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1330841770, now seen corresponding path program 1 times [2022-12-12 20:36:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:48,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778308311] [2022-12-12 20:36:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:48,945 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 20:36:48,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:48,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778308311] [2022-12-12 20:36:48,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778308311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:36:48,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:36:48,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 20:36:48,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933113309] [2022-12-12 20:36:48,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:36:48,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:36:48,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:48,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:36:48,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:36:48,948 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:48,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 420 transitions, 8643 flow. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 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 20:36:48,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:48,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:48,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:49,259 INFO L130 PetriNetUnfolder]: 1309/1794 cut-off events. [2022-12-12 20:36:49,259 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-12-12 20:36:49,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19931 conditions, 1794 events. 1309/1794 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6028 event pairs, 0 based on Foata normal form. 4/1284 useless extension candidates. Maximal degree in co-relation 18826. Up to 1779 conditions per place. [2022-12-12 20:36:49,273 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 327 selfloop transitions, 22 changer transitions 4/353 dead transitions. [2022-12-12 20:36:49,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 353 transitions, 7970 flow [2022-12-12 20:36:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:36:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:36:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2022-12-12 20:36:49,275 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.496 [2022-12-12 20:36:49,275 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2022-12-12 20:36:49,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 353 transitions, 7970 flow [2022-12-12 20:36:49,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 349 transitions, 7879 flow [2022-12-12 20:36:49,291 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 349 transitions, 7879 flow [2022-12-12 20:36:49,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 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 20:36:49,291 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:49,292 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 20:36:49,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 20:36:49,292 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 2 more)] === [2022-12-12 20:36:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash -20347669, now seen corresponding path program 1 times [2022-12-12 20:36:49,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:49,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311075616] [2022-12-12 20:36:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:49,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:49,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311075616] [2022-12-12 20:36:49,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311075616] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:49,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10904862] [2022-12-12 20:36:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:49,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:49,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:49,464 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 20:36:49,492 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 20:36:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:49,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 20:36:49,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:49,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:36:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:49,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10904862] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:36:49,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:36:49,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-12-12 20:36:49,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537697338] [2022-12-12 20:36:49,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:36:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:36:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:36:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:36:49,661 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:49,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 349 transitions, 7879 flow. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 20:36:49,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:49,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:49,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:50,238 INFO L130 PetriNetUnfolder]: 3168/4480 cut-off events. [2022-12-12 20:36:50,239 INFO L131 PetriNetUnfolder]: For 683/683 co-relation queries the response was YES. [2022-12-12 20:36:50,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54241 conditions, 4480 events. 3168/4480 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 19788 event pairs, 0 based on Foata normal form. 165/3445 useless extension candidates. Maximal degree in co-relation 51395. Up to 4472 conditions per place. [2022-12-12 20:36:50,325 INFO L137 encePairwiseOnDemand]: 19/25 looper letters, 614 selfloop transitions, 116 changer transitions 110/840 dead transitions. [2022-12-12 20:36:50,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 840 transitions, 20655 flow [2022-12-12 20:36:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:36:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:36:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2022-12-12 20:36:50,327 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.71 [2022-12-12 20:36:50,328 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2022-12-12 20:36:50,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 840 transitions, 20655 flow [2022-12-12 20:36:50,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 730 transitions, 17919 flow [2022-12-12 20:36:50,370 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 730 transitions, 17919 flow [2022-12-12 20:36:50,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 20:36:50,370 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:50,371 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 20:36:50,382 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 20:36:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:50,577 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 2 more)] === [2022-12-12 20:36:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:50,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1811282133, now seen corresponding path program 2 times [2022-12-12 20:36:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:50,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600507883] [2022-12-12 20:36:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:50,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:50,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600507883] [2022-12-12 20:36:50,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600507883] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284493436] [2022-12-12 20:36:50,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:36:50,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:50,732 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 20:36:50,735 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 20:36:50,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:36:50,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:36:50,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 20:36:50,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:50,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:36:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:50,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284493436] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:36:50,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:36:50,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-12-12 20:36:50,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724297443] [2022-12-12 20:36:50,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:36:50,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:36:50,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:36:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:36:50,952 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:50,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 730 transitions, 17919 flow. Second operand has 5 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 20:36:50,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:50,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:50,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:52,402 INFO L130 PetriNetUnfolder]: 5932/8370 cut-off events. [2022-12-12 20:36:52,402 INFO L131 PetriNetUnfolder]: For 1200/1200 co-relation queries the response was YES. [2022-12-12 20:36:52,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109669 conditions, 8370 events. 5932/8370 cut-off events. For 1200/1200 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 40938 event pairs, 0 based on Foata normal form. 165/6367 useless extension candidates. Maximal degree in co-relation 104486. Up to 8362 conditions per place. [2022-12-12 20:36:52,466 INFO L137 encePairwiseOnDemand]: 19/25 looper letters, 1074 selfloop transitions, 322 changer transitions 131/1527 dead transitions. [2022-12-12 20:36:52,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 1527 transitions, 40560 flow [2022-12-12 20:36:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:36:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:36:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2022-12-12 20:36:52,467 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.752 [2022-12-12 20:36:52,468 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 35 predicate places. [2022-12-12 20:36:52,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 1527 transitions, 40560 flow [2022-12-12 20:36:52,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 1396 transitions, 37046 flow [2022-12-12 20:36:52,540 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 1396 transitions, 37046 flow [2022-12-12 20:36:52,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 20:36:52,540 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:52,540 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] [2022-12-12 20:36:52,547 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 20:36:52,746 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,SelfDestructingSolverStorable11 [2022-12-12 20:36:52,747 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 2 more)] === [2022-12-12 20:36:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash -146503464, now seen corresponding path program 3 times [2022-12-12 20:36:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:52,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172175469] [2022-12-12 20:36:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:52,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:36:52,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:52,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172175469] [2022-12-12 20:36:52,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172175469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:52,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552650011] [2022-12-12 20:36:52,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:36:52,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:52,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:52,968 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 20:36:52,970 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 20:36:53,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:36:53,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:36:53,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 20:36:53,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:53,204 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 20:36:53,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:36:53,289 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 20:36:53,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552650011] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:36:53,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:36:53,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-12-12 20:36:53,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288319504] [2022-12-12 20:36:53,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:36:53,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 20:36:53,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:53,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 20:36:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-12-12 20:36:53,291 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:53,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 1396 transitions, 37046 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 20:36:53,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:53,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:53,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:57,355 INFO L130 PetriNetUnfolder]: 11181/15764 cut-off events. [2022-12-12 20:36:57,356 INFO L131 PetriNetUnfolder]: For 2240/2240 co-relation queries the response was YES. [2022-12-12 20:36:57,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222237 conditions, 15764 events. 11181/15764 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 85516 event pairs, 0 based on Foata normal form. 262/11954 useless extension candidates. Maximal degree in co-relation 214965. Up to 15756 conditions per place. [2022-12-12 20:36:57,454 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 2687 selfloop transitions, 401 changer transitions 446/3534 dead transitions. [2022-12-12 20:36:57,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 3534 transitions, 100770 flow [2022-12-12 20:36:57,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 20:36:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 20:36:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 197 transitions. [2022-12-12 20:36:57,457 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4925 [2022-12-12 20:36:57,457 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2022-12-12 20:36:57,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 3534 transitions, 100770 flow [2022-12-12 20:36:57,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 3088 transitions, 87955 flow [2022-12-12 20:36:57,568 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 3088 transitions, 87955 flow [2022-12-12 20:36:57,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 20:36:57,568 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:57,568 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] [2022-12-12 20:36:57,573 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 20:36:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:57,769 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 2 more)] === [2022-12-12 20:36:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1948020663, now seen corresponding path program 4 times [2022-12-12 20:36:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:57,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678141061] [2022-12-12 20:36:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:36:57,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:57,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678141061] [2022-12-12 20:36:57,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678141061] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:57,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626388246] [2022-12-12 20:36:57,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:36:57,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:57,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:57,928 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 20:36:57,931 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 20:36:58,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:36:58,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:36:58,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 20:36:58,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:36:58,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:36:58,228 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 20:36:58,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626388246] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:36:58,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:36:58,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-12-12 20:36:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162928131] [2022-12-12 20:36:58,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:36:58,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 20:36:58,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 20:36:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-12 20:36:58,230 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:36:58,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 3088 transitions, 87955 flow. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 20:36:58,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:58,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:36:58,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:37:15,109 INFO L130 PetriNetUnfolder]: 25820/36509 cut-off events. [2022-12-12 20:37:15,109 INFO L131 PetriNetUnfolder]: For 5216/5216 co-relation queries the response was YES. [2022-12-12 20:37:15,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550555 conditions, 36509 events. 25820/36509 cut-off events. For 5216/5216 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 225720 event pairs, 0 based on Foata normal form. 1476/29523 useless extension candidates. Maximal degree in co-relation 535772. Up to 36501 conditions per place. [2022-12-12 20:37:15,393 INFO L137 encePairwiseOnDemand]: 18/25 looper letters, 6736 selfloop transitions, 1564 changer transitions 747/9047 dead transitions. [2022-12-12 20:37:15,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 9047 transitions, 275661 flow [2022-12-12 20:37:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 20:37:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 20:37:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 443 transitions. [2022-12-12 20:37:15,396 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4789189189189189 [2022-12-12 20:37:15,396 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 85 predicate places. [2022-12-12 20:37:15,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 9047 transitions, 275661 flow [2022-12-12 20:37:15,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 8300 transitions, 252705 flow [2022-12-12 20:37:15,740 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 8300 transitions, 252705 flow [2022-12-12 20:37:15,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 20:37:15,740 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:37:15,740 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] [2022-12-12 20:37:15,745 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 20:37:15,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:37:15,941 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 2 more)] === [2022-12-12 20:37:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:37:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash 122835702, now seen corresponding path program 5 times [2022-12-12 20:37:15,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:37:15,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178723369] [2022-12-12 20:37:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:37:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:37:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:37:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:37:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:37:16,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178723369] [2022-12-12 20:37:16,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178723369] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:37:16,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707681973] [2022-12-12 20:37:16,114 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:37:16,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:37:16,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:37:16,115 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 20:37:16,120 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 20:37:16,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 20:37:16,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:37:16,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 20:37:16,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:37:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:37:16,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:37:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:37:16,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707681973] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:37:16,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:37:16,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2022-12-12 20:37:16,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149920713] [2022-12-12 20:37:16,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:37:16,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 20:37:16,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:37:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 20:37:16,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-12-12 20:37:16,546 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:37:16,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 8300 transitions, 252705 flow. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 20:37:16,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:37:16,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:37:16,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:40:04,081 INFO L130 PetriNetUnfolder]: 65991/94040 cut-off events. [2022-12-12 20:40:04,081 INFO L131 PetriNetUnfolder]: For 14113/14113 co-relation queries the response was YES. [2022-12-12 20:40:04,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512499 conditions, 94040 events. 65991/94040 cut-off events. For 14113/14113 co-relation queries the response was YES. Maximal size of possible extension queue 3849. Compared 665611 event pairs, 0 based on Foata normal form. 1248/73040 useless extension candidates. Maximal degree in co-relation 1468162. Up to 94032 conditions per place. [2022-12-12 20:40:05,033 INFO L137 encePairwiseOnDemand]: 18/25 looper letters, 21477 selfloop transitions, 4662 changer transitions 1142/27281 dead transitions. [2022-12-12 20:40:05,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 27281 transitions, 886300 flow [2022-12-12 20:40:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 20:40:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 20:40:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 369 transitions. [2022-12-12 20:40:05,035 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5089655172413793 [2022-12-12 20:40:05,035 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 113 predicate places. [2022-12-12 20:40:05,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 27281 transitions, 886300 flow [2022-12-12 20:40:06,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 26139 transitions, 848826 flow [2022-12-12 20:40:06,022 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 26139 transitions, 848826 flow [2022-12-12 20:40:06,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 20:40:06,023 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:40:06,023 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] [2022-12-12 20:40:06,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-12 20:40:06,223 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,SelfDestructingSolverStorable14 [2022-12-12 20:40:06,224 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 2 more)] === [2022-12-12 20:40:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:40:06,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1557053175, now seen corresponding path program 6 times [2022-12-12 20:40:06,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:40:06,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116700765] [2022-12-12 20:40:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:40:06,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:40:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:40:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:40:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:40:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116700765] [2022-12-12 20:40:06,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116700765] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:40:06,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886413720] [2022-12-12 20:40:06,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:40:06,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:40:06,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:40:06,372 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:40:06,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 20:40:06,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 20:40:06,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:40:06,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 20:40:06,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:40:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:40:06,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:40:06,660 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 20:40:06,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886413720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:40:06,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:40:06,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-12-12 20:40:06,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385880856] [2022-12-12 20:40:06,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:40:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 20:40:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:40:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 20:40:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-12-12 20:40:06,662 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 20:40:06,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 26139 transitions, 848826 flow. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 20:40:06,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:40:06,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 20:40:06,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 20:50:43,927 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 20:50:43,927 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 20:50:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 20:50:44,100 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 20:50:44,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 20:50:44,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-12 20:50:44,304 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 0/25 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1919120 conditions, 112421 events (81869/112420 cut-off events. For 16552/16552 co-relation queries the response was YES. Maximal size of possible extension queue 6261. Compared 804035 event pairs, 31 based on Foata normal form. 448/87929 useless extension candidates. Maximal degree in co-relation 1913395. Up to 112412 conditions per place.). [2022-12-12 20:50:44,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-12 20:50:44,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-12 20:50:44,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-12 20:50:44,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-12 20:50:44,306 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 1, 1, 1] [2022-12-12 20:50:44,308 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 20:50:44,308 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 20:50:44,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 08:50:44 BasicIcfg [2022-12-12 20:50:44,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 20:50:44,311 INFO L158 Benchmark]: Toolchain (without parser) took 846695.17ms. Allocated memory was 179.3MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 156.0MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2022-12-12 20:50:44,311 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory is still 156.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 20:50:44,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.81ms. Allocated memory is still 179.3MB. Free memory was 155.5MB in the beginning and 143.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 20:50:44,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.75ms. Allocated memory is still 179.3MB. Free memory was 143.4MB in the beginning and 141.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 20:50:44,312 INFO L158 Benchmark]: Boogie Preprocessor took 38.78ms. Allocated memory is still 179.3MB. Free memory was 141.8MB in the beginning and 140.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 20:50:44,312 INFO L158 Benchmark]: RCFGBuilder took 521.21ms. Allocated memory is still 179.3MB. Free memory was 140.3MB in the beginning and 119.8MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 20:50:44,312 INFO L158 Benchmark]: TraceAbstraction took 845809.71ms. Allocated memory was 179.3MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 118.8MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2022-12-12 20:50:44,313 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 179.3MB. Free memory is still 156.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 267.81ms. Allocated memory is still 179.3MB. Free memory was 155.5MB in the beginning and 143.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.75ms. Allocated memory is still 179.3MB. Free memory was 143.4MB in the beginning and 141.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.78ms. Allocated memory is still 179.3MB. Free memory was 141.8MB in the beginning and 140.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 521.21ms. Allocated memory is still 179.3MB. Free memory was 140.3MB in the beginning and 119.8MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 845809.71ms. Allocated memory was 179.3MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 118.8MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 111 PlacesBefore, 34 PlacesAfterwards, 108 TransitionsBefore, 25 TransitionsAfterwards, 1224 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 48 TrivialYvCompositions, 29 ConcurrentYvCompositions, 6 ChoiceCompositions, 83 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 654, independent: 654, independent conditional: 654, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 654, independent: 654, independent conditional: 0, independent unconditional: 654, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 654, independent: 654, independent conditional: 0, independent unconditional: 654, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 654, independent: 654, independent conditional: 0, independent unconditional: 654, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 654, independent: 654, independent conditional: 0, independent unconditional: 654, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 654, independent: 654, independent conditional: 0, independent unconditional: 654, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 654, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 654, unknown conditional: 0, unknown unconditional: 654] , Statistics on independence cache: Total cache size (in pairs): 1066, Positive cache size: 1066, Positive conditional cache size: 0, Positive unconditional cache size: 1066, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 0/25 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1919120 conditions, 112421 events (81869/112420 cut-off events. For 16552/16552 co-relation queries the response was YES. Maximal size of possible extension queue 6261. Compared 804035 event pairs, 31 based on Foata normal form. 448/87929 useless extension candidates. Maximal degree in co-relation 1913395. Up to 112412 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 0/25 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1919120 conditions, 112421 events (81869/112420 cut-off events. For 16552/16552 co-relation queries the response was YES. Maximal size of possible extension queue 6261. Compared 804035 event pairs, 31 based on Foata normal form. 448/87929 useless extension candidates. Maximal degree in co-relation 1913395. Up to 112412 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 0/25 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1919120 conditions, 112421 events (81869/112420 cut-off events. For 16552/16552 co-relation queries the response was YES. Maximal size of possible extension queue 6261. Compared 804035 event pairs, 31 based on Foata normal form. 448/87929 useless extension candidates. Maximal degree in co-relation 1913395. Up to 112412 conditions per place.). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 0/25 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1919120 conditions, 112421 events (81869/112420 cut-off events. For 16552/16552 co-relation queries the response was YES. Maximal size of possible extension queue 6261. Compared 804035 event pairs, 31 based on Foata normal form. 448/87929 useless extension candidates. Maximal degree in co-relation 1913395. Up to 112412 conditions per place.). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 0/25 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1919120 conditions, 112421 events (81869/112420 cut-off events. For 16552/16552 co-relation queries the response was YES. Maximal size of possible extension queue 6261. Compared 804035 event pairs, 31 based on Foata normal form. 448/87929 useless extension candidates. Maximal degree in co-relation 1913395. Up to 112412 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 139 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.8s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 845.7s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 832.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2123 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2123 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 247 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3234 IncrementalHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 247 mSolverCounterUnsat, 0 mSDtfsCounter, 3234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 550 GetRequests, 362 SyntacticMatches, 18 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=848826occurred in iteration=15, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 15 MinimizatonAttempts, 80696 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 596 NumberOfCodeBlocks, 596 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 761 ConstructedInterpolants, 0 QuantifiedInterpolants, 4909 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2096 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 63/113 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown