/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 --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 21:35:42,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 21:35:42,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 21:35:42,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 21:35:42,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 21:35:42,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 21:35:42,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 21:35:42,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 21:35:42,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 21:35:42,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 21:35:42,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 21:35:42,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 21:35:42,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 21:35:42,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 21:35:42,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 21:35:42,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 21:35:42,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 21:35:42,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 21:35:42,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 21:35:42,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 21:35:42,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 21:35:42,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 21:35:42,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 21:35:42,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 21:35:42,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 21:35:42,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 21:35:42,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 21:35:42,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 21:35:42,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 21:35:42,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 21:35:42,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 21:35:42,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 21:35:42,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 21:35:42,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 21:35:42,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 21:35:42,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 21:35:42,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 21:35:42,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 21:35:42,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 21:35:42,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 21:35:42,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 21:35:42,799 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 21:35:42,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 21:35:42,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 21:35:42,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 21:35:42,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 21:35:42,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 21:35:42,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 21:35:42,828 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 21:35:42,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 21:35:42,828 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 21:35:42,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 21:35:42,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 21:35:42,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 21:35:42,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 21:35:42,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 21:35:42,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 21:35:42,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:35:42,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 21:35:42,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 21:35:42,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 21:35:42,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 21:35:42,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 21:35:42,830 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 21:35:42,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 21:35:43,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 21:35:43,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 21:35:43,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 21:35:43,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 21:35:43,115 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 21:35:43,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2022-12-12 21:35:44,073 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 21:35:44,278 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 21:35:44,279 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2022-12-12 21:35:44,289 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c0d4792/34a2a918ccc74a27a76ae13c2ff1bbf4/FLAGb60d5a3e3 [2022-12-12 21:35:44,301 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c0d4792/34a2a918ccc74a27a76ae13c2ff1bbf4 [2022-12-12 21:35:44,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 21:35:44,304 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 21:35:44,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 21:35:44,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 21:35:44,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 21:35:44,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9590a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44, skipping insertion in model container [2022-12-12 21:35:44,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 21:35:44,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 21:35:44,492 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i[986,999] [2022-12-12 21:35:44,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:35:44,700 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 21:35:44,708 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i[986,999] [2022-12-12 21:35:44,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:35:44,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:35:44,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:35:44,800 INFO L208 MainTranslator]: Completed translation [2022-12-12 21:35:44,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44 WrapperNode [2022-12-12 21:35:44,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 21:35:44,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 21:35:44,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 21:35:44,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 21:35:44,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,853 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2022-12-12 21:35:44,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 21:35:44,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 21:35:44,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 21:35:44,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 21:35:44,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 21:35:44,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 21:35:44,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 21:35:44,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 21:35:44,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (1/1) ... [2022-12-12 21:35:44,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:35:44,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 21:35:44,956 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 21:35:44,979 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 21:35:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 21:35:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 21:35:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 21:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 21:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 21:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 21:35:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 21:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 21:35:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 21:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 21:35:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 21:35:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-12 21:35:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-12 21:35:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 21:35:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 21:35:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 21:35:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 21:35:44,993 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 21:35:45,150 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 21:35:45,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 21:35:45,468 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 21:35:45,569 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 21:35:45,569 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 21:35:45,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:35:45 BoogieIcfgContainer [2022-12-12 21:35:45,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 21:35:45,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 21:35:45,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 21:35:45,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 21:35:45,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 09:35:44" (1/3) ... [2022-12-12 21:35:45,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ade42a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:35:45, skipping insertion in model container [2022-12-12 21:35:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:35:44" (2/3) ... [2022-12-12 21:35:45,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ade42a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:35:45, skipping insertion in model container [2022-12-12 21:35:45,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:35:45" (3/3) ... [2022-12-12 21:35:45,580 INFO L112 eAbstractionObserver]: Analyzing ICFG mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2022-12-12 21:35:45,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 21:35:45,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 21:35:45,596 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 21:35:45,645 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 21:35:45,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 280 flow [2022-12-12 21:35:45,730 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-12 21:35:45,730 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:35:45,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-12 21:35:45,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 130 transitions, 280 flow [2022-12-12 21:35:45,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 126 transitions, 264 flow [2022-12-12 21:35:45,744 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 21:35:45,756 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-12 21:35:45,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 126 transitions, 264 flow [2022-12-12 21:35:45,794 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-12 21:35:45,798 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:35:45,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-12 21:35:45,802 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-12 21:35:45,802 INFO L226 LiptonReduction]: Number of co-enabled transitions 3164 [2022-12-12 21:35:50,564 INFO L241 LiptonReduction]: Total number of compositions: 99 [2022-12-12 21:35:50,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 21:35:50,588 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;@11d90821, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 21:35:50,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 21:35:50,596 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-12 21:35:50,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:35:50,596 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:35:50,597 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-12 21:35:50,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:35:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:35:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash 568663, now seen corresponding path program 1 times [2022-12-12 21:35:50,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:35:50,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788574493] [2022-12-12 21:35:50,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:35:50,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:35:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:35:50,900 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 21:35:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:35:50,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788574493] [2022-12-12 21:35:50,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788574493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:35:50,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:35:50,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:35:50,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436906133] [2022-12-12 21:35:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:35:50,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:35:50,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:35:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:35:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:35:50,926 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 83 [2022-12-12 21:35:50,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 21:35:50,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:35:50,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 83 [2022-12-12 21:35:50,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:35:57,938 INFO L130 PetriNetUnfolder]: 66790/97374 cut-off events. [2022-12-12 21:35:57,938 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-12-12 21:35:58,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185663 conditions, 97374 events. 66790/97374 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 4514. Compared 790516 event pairs, 9970 based on Foata normal form. 0/63342 useless extension candidates. Maximal degree in co-relation 185651. Up to 73765 conditions per place. [2022-12-12 21:35:58,282 INFO L137 encePairwiseOnDemand]: 78/83 looper letters, 48 selfloop transitions, 2 changer transitions 71/137 dead transitions. [2022-12-12 21:35:58,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 137 transitions, 535 flow [2022-12-12 21:35:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:35:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:35:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2022-12-12 21:35:58,293 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7068273092369478 [2022-12-12 21:35:58,296 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 0 predicate places. [2022-12-12 21:35:58,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 137 transitions, 535 flow [2022-12-12 21:35:58,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 66 transitions, 253 flow [2022-12-12 21:35:58,403 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 253 flow [2022-12-12 21:35:58,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 21:35:58,404 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:35:58,404 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:35:58,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 21:35:58,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:35:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:35:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 486257866, now seen corresponding path program 1 times [2022-12-12 21:35:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:35:58,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476934995] [2022-12-12 21:35:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:35:58,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:35:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:35:58,779 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 21:35:58,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:35:58,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476934995] [2022-12-12 21:35:58,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476934995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:35:58,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:35:58,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:35:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279853122] [2022-12-12 21:35:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:35:58,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:35:58,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:35:58,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:35:58,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:35:58,782 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 83 [2022-12-12 21:35:58,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 21:35:58,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:35:58,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 83 [2022-12-12 21:35:58,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:36:02,690 INFO L130 PetriNetUnfolder]: 44379/61813 cut-off events. [2022-12-12 21:36:02,691 INFO L131 PetriNetUnfolder]: For 9561/9561 co-relation queries the response was YES. [2022-12-12 21:36:02,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169456 conditions, 61813 events. 44379/61813 cut-off events. For 9561/9561 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 403692 event pairs, 6373 based on Foata normal form. 1348/53391 useless extension candidates. Maximal degree in co-relation 169441. Up to 41744 conditions per place. [2022-12-12 21:36:03,344 INFO L137 encePairwiseOnDemand]: 74/83 looper letters, 89 selfloop transitions, 11 changer transitions 2/113 dead transitions. [2022-12-12 21:36:03,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 113 transitions, 647 flow [2022-12-12 21:36:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:36:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:36:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2022-12-12 21:36:03,348 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40160642570281124 [2022-12-12 21:36:03,349 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -34 predicate places. [2022-12-12 21:36:03,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 113 transitions, 647 flow [2022-12-12 21:36:03,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 111 transitions, 639 flow [2022-12-12 21:36:03,514 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 111 transitions, 639 flow [2022-12-12 21:36:03,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 21:36:03,514 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:36:03,514 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:36:03,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 21:36:03,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:36:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:36:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2105874409, now seen corresponding path program 1 times [2022-12-12 21:36:03,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:36:03,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118771491] [2022-12-12 21:36:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:36:03,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:36:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:36:03,681 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 21:36:03,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:36:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118771491] [2022-12-12 21:36:03,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118771491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:36:03,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:36:03,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:36:03,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845278948] [2022-12-12 21:36:03,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:36:03,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:36:03,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:36:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:36:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:36:03,686 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 83 [2022-12-12 21:36:03,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 111 transitions, 639 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 21:36:03,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:36:03,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 83 [2022-12-12 21:36:03,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:36:07,136 INFO L130 PetriNetUnfolder]: 34525/48814 cut-off events. [2022-12-12 21:36:07,140 INFO L131 PetriNetUnfolder]: For 5388/5388 co-relation queries the response was YES. [2022-12-12 21:36:07,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181760 conditions, 48814 events. 34525/48814 cut-off events. For 5388/5388 co-relation queries the response was YES. Maximal size of possible extension queue 1726. Compared 312777 event pairs, 1379 based on Foata normal form. 60/41050 useless extension candidates. Maximal degree in co-relation 181742. Up to 34522 conditions per place. [2022-12-12 21:36:07,463 INFO L137 encePairwiseOnDemand]: 74/83 looper letters, 133 selfloop transitions, 17 changer transitions 0/161 dead transitions. [2022-12-12 21:36:07,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 161 transitions, 1236 flow [2022-12-12 21:36:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:36:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:36:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2022-12-12 21:36:07,473 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3704819277108434 [2022-12-12 21:36:07,473 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -32 predicate places. [2022-12-12 21:36:07,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 161 transitions, 1236 flow [2022-12-12 21:36:07,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 161 transitions, 1236 flow [2022-12-12 21:36:07,668 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 161 transitions, 1236 flow [2022-12-12 21:36:07,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 21:36:07,669 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:36:07,669 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:36:07,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 21:36:07,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:36:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:36:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2105876858, now seen corresponding path program 1 times [2022-12-12 21:36:07,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:36:07,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163061099] [2022-12-12 21:36:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:36:07,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:36:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:36:07,800 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 21:36:07,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:36:07,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163061099] [2022-12-12 21:36:07,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163061099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:36:07,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:36:07,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:36:07,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049433039] [2022-12-12 21:36:07,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:36:07,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:36:07,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:36:07,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:36:07,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:36:07,804 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 83 [2022-12-12 21:36:07,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 161 transitions, 1236 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 21:36:07,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:36:07,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 83 [2022-12-12 21:36:07,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:36:11,383 INFO L130 PetriNetUnfolder]: 33913/47940 cut-off events. [2022-12-12 21:36:11,383 INFO L131 PetriNetUnfolder]: For 5365/5365 co-relation queries the response was YES. [2022-12-12 21:36:11,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224037 conditions, 47940 events. 33913/47940 cut-off events. For 5365/5365 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 305393 event pairs, 1182 based on Foata normal form. 72/40296 useless extension candidates. Maximal degree in co-relation 224016. Up to 33898 conditions per place. [2022-12-12 21:36:11,874 INFO L137 encePairwiseOnDemand]: 74/83 looper letters, 178 selfloop transitions, 26 changer transitions 0/215 dead transitions. [2022-12-12 21:36:11,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 215 transitions, 2084 flow [2022-12-12 21:36:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:36:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:36:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2022-12-12 21:36:11,876 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3855421686746988 [2022-12-12 21:36:11,877 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -29 predicate places. [2022-12-12 21:36:11,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 215 transitions, 2084 flow [2022-12-12 21:36:12,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 215 transitions, 2084 flow [2022-12-12 21:36:12,064 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 215 transitions, 2084 flow [2022-12-12 21:36:12,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 21:36:12,064 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:36:12,064 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:36:12,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 21:36:12,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:36:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:36:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash -857598759, now seen corresponding path program 1 times [2022-12-12 21:36:12,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:36:12,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171269093] [2022-12-12 21:36:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:36:12,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:36:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:36:12,160 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 21:36:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:36:12,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171269093] [2022-12-12 21:36:12,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171269093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:36:12,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:36:12,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:36:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851654767] [2022-12-12 21:36:12,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:36:12,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:36:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:36:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:36:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:36:12,162 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 83 [2022-12-12 21:36:12,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 215 transitions, 2084 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:36:12,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:36:12,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 83 [2022-12-12 21:36:12,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:36:15,691 INFO L130 PetriNetUnfolder]: 32329/45559 cut-off events. [2022-12-12 21:36:15,692 INFO L131 PetriNetUnfolder]: For 5311/5311 co-relation queries the response was YES. [2022-12-12 21:36:15,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257167 conditions, 45559 events. 32329/45559 cut-off events. For 5311/5311 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 284985 event pairs, 822 based on Foata normal form. 300/38455 useless extension candidates. Maximal degree in co-relation 257143. Up to 32462 conditions per place. [2022-12-12 21:36:16,021 INFO L137 encePairwiseOnDemand]: 75/83 looper letters, 260 selfloop transitions, 12 changer transitions 0/283 dead transitions. [2022-12-12 21:36:16,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 283 transitions, 3292 flow [2022-12-12 21:36:16,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:36:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:36:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2022-12-12 21:36:16,023 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35843373493975905 [2022-12-12 21:36:16,023 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -26 predicate places. [2022-12-12 21:36:16,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 283 transitions, 3292 flow [2022-12-12 21:36:16,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 283 transitions, 3292 flow [2022-12-12 21:36:16,279 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 283 transitions, 3292 flow [2022-12-12 21:36:16,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:36:16,279 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:36:16,279 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:36:16,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 21:36:16,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:36:16,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:36:16,280 INFO L85 PathProgramCache]: Analyzing trace with hash -815761164, now seen corresponding path program 1 times [2022-12-12 21:36:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:36:16,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353515790] [2022-12-12 21:36:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:36:16,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:36:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:36:16,412 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 21:36:16,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:36:16,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353515790] [2022-12-12 21:36:16,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353515790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:36:16,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:36:16,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:36:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238677062] [2022-12-12 21:36:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:36:16,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:36:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:36:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:36:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:36:16,414 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 83 [2022-12-12 21:36:16,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 283 transitions, 3292 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 21:36:16,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:36:16,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 83 [2022-12-12 21:36:16,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:36:23,904 INFO L130 PetriNetUnfolder]: 65184/89408 cut-off events. [2022-12-12 21:36:23,904 INFO L131 PetriNetUnfolder]: For 157206/159915 co-relation queries the response was YES. [2022-12-12 21:36:24,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546550 conditions, 89408 events. 65184/89408 cut-off events. For 157206/159915 co-relation queries the response was YES. Maximal size of possible extension queue 3132. Compared 576220 event pairs, 8390 based on Foata normal form. 5647/81734 useless extension candidates. Maximal degree in co-relation 546523. Up to 62072 conditions per place. [2022-12-12 21:36:24,506 INFO L137 encePairwiseOnDemand]: 68/83 looper letters, 336 selfloop transitions, 75 changer transitions 330/775 dead transitions. [2022-12-12 21:36:24,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 775 transitions, 10597 flow [2022-12-12 21:36:24,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:36:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:36:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2022-12-12 21:36:24,508 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4072289156626506 [2022-12-12 21:36:24,508 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -22 predicate places. [2022-12-12 21:36:24,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 775 transitions, 10597 flow [2022-12-12 21:36:24,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 445 transitions, 6057 flow [2022-12-12 21:36:24,869 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 445 transitions, 6057 flow [2022-12-12 21:36:24,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 21:36:24,870 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:36:24,870 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:36:24,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 21:36:24,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:36:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:36:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1857196528, now seen corresponding path program 1 times [2022-12-12 21:36:24,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:36:24,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284887929] [2022-12-12 21:36:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:36:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:36:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:36:24,964 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 21:36:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:36:24,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284887929] [2022-12-12 21:36:24,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284887929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:36:24,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:36:24,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:36:24,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404372570] [2022-12-12 21:36:24,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:36:24,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:36:24,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:36:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:36:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:36:24,966 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2022-12-12 21:36:24,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 445 transitions, 6057 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:36:24,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:36:24,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2022-12-12 21:36:24,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:36:35,388 INFO L130 PetriNetUnfolder]: 80888/110882 cut-off events. [2022-12-12 21:36:35,389 INFO L131 PetriNetUnfolder]: For 279438/282328 co-relation queries the response was YES. [2022-12-12 21:36:35,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766590 conditions, 110882 events. 80888/110882 cut-off events. For 279438/282328 co-relation queries the response was YES. Maximal size of possible extension queue 3800. Compared 734280 event pairs, 10198 based on Foata normal form. 2163/95813 useless extension candidates. Maximal degree in co-relation 766560. Up to 98142 conditions per place. [2022-12-12 21:36:36,168 INFO L137 encePairwiseOnDemand]: 80/83 looper letters, 544 selfloop transitions, 31 changer transitions 51/659 dead transitions. [2022-12-12 21:36:36,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 659 transitions, 10329 flow [2022-12-12 21:36:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:36:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:36:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2022-12-12 21:36:36,169 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3895582329317269 [2022-12-12 21:36:36,170 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -22 predicate places. [2022-12-12 21:36:36,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 659 transitions, 10329 flow [2022-12-12 21:36:36,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 608 transitions, 9501 flow [2022-12-12 21:36:36,582 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 608 transitions, 9501 flow [2022-12-12 21:36:36,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:36:36,582 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:36:36,583 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:36:36,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 21:36:36,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:36:36,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:36:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1114171805, now seen corresponding path program 1 times [2022-12-12 21:36:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:36:36,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758525363] [2022-12-12 21:36:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:36:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:36:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:36:36,736 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 21:36:36,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:36:36,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758525363] [2022-12-12 21:36:36,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758525363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:36:36,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:36:36,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:36:36,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391365078] [2022-12-12 21:36:36,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:36:36,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:36:36,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:36:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:36:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:36:36,738 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 83 [2022-12-12 21:36:36,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 608 transitions, 9501 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 21:36:36,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:36:36,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 83 [2022-12-12 21:36:36,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:36:47,946 INFO L130 PetriNetUnfolder]: 67033/97124 cut-off events. [2022-12-12 21:36:47,947 INFO L131 PetriNetUnfolder]: For 296436/302539 co-relation queries the response was YES. [2022-12-12 21:36:48,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754544 conditions, 97124 events. 67033/97124 cut-off events. For 296436/302539 co-relation queries the response was YES. Maximal size of possible extension queue 4128. Compared 720515 event pairs, 5091 based on Foata normal form. 9885/91945 useless extension candidates. Maximal degree in co-relation 754511. Up to 85408 conditions per place. [2022-12-12 21:36:48,565 INFO L137 encePairwiseOnDemand]: 68/83 looper letters, 479 selfloop transitions, 213 changer transitions 428/1154 dead transitions. [2022-12-12 21:36:48,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 1154 transitions, 20360 flow [2022-12-12 21:36:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:36:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:36:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2022-12-12 21:36:48,567 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41566265060240964 [2022-12-12 21:36:48,568 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -17 predicate places. [2022-12-12 21:36:48,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 1154 transitions, 20360 flow [2022-12-12 21:36:48,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 726 transitions, 12749 flow [2022-12-12 21:36:48,867 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 726 transitions, 12749 flow [2022-12-12 21:36:48,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 21:36:48,868 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:36:48,868 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] [2022-12-12 21:36:48,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 21:36:48,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:36:48,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:36:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1696693856, now seen corresponding path program 1 times [2022-12-12 21:36:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:36:48,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450640370] [2022-12-12 21:36:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:36:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:36:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:36:49,075 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 21:36:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:36:49,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450640370] [2022-12-12 21:36:49,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450640370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:36:49,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:36:49,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 21:36:49,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34029183] [2022-12-12 21:36:49,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:36:49,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:36:49,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:36:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:36:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:36:49,081 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 83 [2022-12-12 21:36:49,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 726 transitions, 12749 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 21:36:49,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:36:49,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 83 [2022-12-12 21:36:49,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand