/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-RepeatedSemanticLbe.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/goblint-regression/36-apron_21-traces-cluster-based_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 06:51:07,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 06:51:07,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 06:51:07,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 06:51:07,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 06:51:07,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 06:51:07,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 06:51:07,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 06:51:07,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 06:51:07,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 06:51:07,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 06:51:07,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 06:51:07,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 06:51:07,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 06:51:07,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 06:51:07,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 06:51:07,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 06:51:07,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 06:51:07,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 06:51:07,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 06:51:07,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 06:51:07,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 06:51:07,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 06:51:07,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 06:51:07,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-13 06:51:07,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 06:51:07,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 06:51:07,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 06:51:07,796 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-RepeatedSemanticLbe.epf [2022-12-13 06:51:07,827 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 06:51:07,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 06:51:07,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 06:51:07,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 06:51:07,829 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 06:51:07,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 06:51:07,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 06:51:07,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 06:51:07,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 06:51:07,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 06:51:07,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 06:51:07,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 06:51:07,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 06:51:07,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 06:51:07,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 06:51:07,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 06:51:07,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 06:51:07,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 06:51:07,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 06:51:07,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 06:51:07,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 06:51:07,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 06:51:07,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 06:51:07,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 06:51:07,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 06:51:07,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 06:51:07,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 06:51:07,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 06:51:07,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-13 06:51:08,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 06:51:08,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 06:51:08,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 06:51:08,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 06:51:08,152 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 06:51:08,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-12-13 06:51:09,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 06:51:09,476 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 06:51:09,476 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-12-13 06:51:09,488 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25634dcd8/0fa1bf0c190e4590bcc45356ef1a3085/FLAG032317df4 [2022-12-13 06:51:09,502 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25634dcd8/0fa1bf0c190e4590bcc45356ef1a3085 [2022-12-13 06:51:09,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 06:51:09,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 06:51:09,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 06:51:09,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 06:51:09,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 06:51:09,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9d3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09, skipping insertion in model container [2022-12-13 06:51:09,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 06:51:09,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 06:51:09,697 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-12-13 06:51:09,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 06:51:09,892 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 06:51:09,903 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-12-13 06:51:09,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 06:51:09,990 INFO L208 MainTranslator]: Completed translation [2022-12-13 06:51:09,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09 WrapperNode [2022-12-13 06:51:09,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 06:51:09,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 06:51:09,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 06:51:09,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 06:51:10,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,052 INFO L138 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-12-13 06:51:10,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 06:51:10,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 06:51:10,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 06:51:10,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 06:51:10,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 06:51:10,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 06:51:10,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 06:51:10,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 06:51:10,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:10,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 06:51:10,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 06:51:10,114 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) [2022-12-13 06:51:10,136 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 [2022-12-13 06:51:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 06:51:10,153 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 06:51:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 06:51:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 06:51:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 06:51:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 06:51:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-12-13 06:51:10,154 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-12-13 06:51:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 06:51:10,154 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 06:51:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 06:51:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 06:51:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 06:51:10,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 06:51:10,156 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 06:51:10,340 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 06:51:10,342 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 06:51:10,593 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 06:51:10,605 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 06:51:10,605 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 06:51:10,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:10 BoogieIcfgContainer [2022-12-13 06:51:10,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 06:51:10,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 06:51:10,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 06:51:10,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 06:51:10,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:51:09" (1/3) ... [2022-12-13 06:51:10,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aac5b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:51:10, skipping insertion in model container [2022-12-13 06:51:10,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (2/3) ... [2022-12-13 06:51:10,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aac5b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:51:10, skipping insertion in model container [2022-12-13 06:51:10,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:10" (3/3) ... [2022-12-13 06:51:10,614 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2022-12-13 06:51:10,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 06:51:10,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 06:51:10,652 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 06:51:10,770 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 06:51:10,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 155 transitions, 325 flow [2022-12-13 06:51:10,879 INFO L130 PetriNetUnfolder]: 5/152 cut-off events. [2022-12-13 06:51:10,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:10,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 5/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2022-12-13 06:51:10,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 155 transitions, 325 flow [2022-12-13 06:51:10,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 152 transitions, 313 flow [2022-12-13 06:51:10,897 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:51:10,928 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 152 transitions, 313 flow [2022-12-13 06:51:10,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 152 transitions, 313 flow [2022-12-13 06:51:10,968 INFO L130 PetriNetUnfolder]: 5/152 cut-off events. [2022-12-13 06:51:10,969 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:10,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 5/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2022-12-13 06:51:10,976 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 152 transitions, 313 flow [2022-12-13 06:51:10,977 INFO L226 LiptonReduction]: Number of co-enabled transitions 8414 [2022-12-13 06:51:19,333 INFO L241 LiptonReduction]: Total number of compositions: 132 [2022-12-13 06:51:19,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 06:51:19,367 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=REPEATED_LIPTON_PN, 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;@699bd763, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 06:51:19,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 06:51:19,388 INFO L130 PetriNetUnfolder]: 0/59 cut-off events. [2022-12-13 06:51:19,389 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:19,389 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:51:19,389 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:51:19,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-13 06:51:19,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:51:19,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1260939010, now seen corresponding path program 1 times [2022-12-13 06:51:19,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:51:19,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001538994] [2022-12-13 06:51:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:51:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:51:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:51:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 06:51:19,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:51:19,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001538994] [2022-12-13 06:51:19,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001538994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:51:19,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:51:19,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 06:51:19,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569350368] [2022-12-13 06:51:19,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:51:19,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 06:51:19,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:51:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 06:51:19,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 06:51:19,836 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 109 [2022-12-13 06:51:19,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2022-12-13 06:51:19,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:51:19,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 109 [2022-12-13 06:51:19,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:51:57,557 INFO L130 PetriNetUnfolder]: 497438/730140 cut-off events. [2022-12-13 06:51:57,557 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2022-12-13 06:51:58,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405670 conditions, 730140 events. 497438/730140 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 30014. Compared 7100693 event pairs, 166375 based on Foata normal form. 0/269848 useless extension candidates. Maximal degree in co-relation 1405659. Up to 204464 conditions per place. [2022-12-13 06:51:59,789 INFO L137 encePairwiseOnDemand]: 94/109 looper letters, 443 selfloop transitions, 12 changer transitions 9/480 dead transitions. [2022-12-13 06:51:59,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 480 transitions, 1918 flow [2022-12-13 06:51:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 06:51:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 06:51:59,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 628 transitions. [2022-12-13 06:51:59,801 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7201834862385321 [2022-12-13 06:51:59,804 INFO L295 CegarLoopForPetriNet]: 117 programPoint places, 3 predicate places. [2022-12-13 06:51:59,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 480 transitions, 1918 flow [2022-12-13 06:52:01,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 471 transitions, 1882 flow [2022-12-13 06:52:03,629 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:52:03,630 INFO L89 Accepts]: Start accepts. Operand has 120 places, 471 transitions, 1882 flow [2022-12-13 06:52:03,635 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:52:03,635 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:52:03,636 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 471 transitions, 1882 flow [2022-12-13 06:52:03,673 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 471 transitions, 1882 flow [2022-12-13 06:52:03,674 INFO L226 LiptonReduction]: Number of co-enabled transitions 6422 [2022-12-13 06:53:14,624 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:53:14,626 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 70997 [2022-12-13 06:53:14,626 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 471 transitions, 1882 flow [2022-12-13 06:53:14,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2022-12-13 06:53:14,626 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:53:14,626 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:53:14,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 06:53:14,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-13 06:53:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:53:14,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1693331434, now seen corresponding path program 1 times [2022-12-13 06:53:14,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:53:14,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092648375] [2022-12-13 06:53:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:53:14,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:53:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:53:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 06:53:14,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:53:14,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092648375] [2022-12-13 06:53:14,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092648375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:53:14,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:53:14,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 06:53:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641830361] [2022-12-13 06:53:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:53:14,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 06:53:14,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:53:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 06:53:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 06:53:14,785 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 104 [2022-12-13 06:53:14,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 471 transitions, 1882 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2022-12-13 06:53:14,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:53:14,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 104 [2022-12-13 06:53:14,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand