/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:46:01,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:46:01,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:46:01,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 07:46:01,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:46:01,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:46:01,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:46:01,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:46:01,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:46:01,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:46:01,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:46:01,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:46:01,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:46:01,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:46:01,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:46:01,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:46:01,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:46:01,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:46:01,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:46:01,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:46:01,301 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-VariableLbe.epf [2023-01-28 07:46:01,324 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:46:01,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:46:01,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:46:01,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:46:01,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:46:01,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:46:01,327 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:46:01,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:46:01,327 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:46:01,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:46:01,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:46:01,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:46:01,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:46:01,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:46:01,329 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:46:01,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:46:01,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:46:01,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:46:01,536 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:46:01,537 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:46:01,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-01-28 07:46:02,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:46:02,694 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:46:02,694 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-01-28 07:46:02,703 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f70850e4/91868fd9db1941a2a94aa39938bc37b5/FLAG726314d58 [2023-01-28 07:46:02,712 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f70850e4/91868fd9db1941a2a94aa39938bc37b5 [2023-01-28 07:46:02,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:46:02,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:46:02,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:46:02,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:46:02,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:46:02,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:46:02" (1/1) ... [2023-01-28 07:46:02,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f19d4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:02, skipping insertion in model container [2023-01-28 07:46:02,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:46:02" (1/1) ... [2023-01-28 07:46:02,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:46:02,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:46:02,943 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-01-28 07:46:02,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:46:02,986 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:46:03,027 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-01-28 07:46:03,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:46:03,060 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:46:03,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03 WrapperNode [2023-01-28 07:46:03,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:46:03,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:46:03,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:46:03,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:46:03,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,114 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 202 [2023-01-28 07:46:03,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:46:03,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:46:03,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:46:03,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:46:03,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:46:03,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:46:03,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:46:03,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:46:03,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (1/1) ... [2023-01-28 07:46:03,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:46:03,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:46:03,182 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) [2023-01-28 07:46:03,201 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 [2023-01-28 07:46:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:46:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 07:46:03,216 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 07:46:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:46:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 07:46:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:46:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:46:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 07:46:03,217 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 07:46:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:46:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:46:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:46:03,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:46:03,218 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:46:03,356 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:46:03,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:46:03,553 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:46:03,560 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:46:03,561 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-01-28 07:46:03,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:46:03 BoogieIcfgContainer [2023-01-28 07:46:03,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:46:03,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:46:03,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:46:03,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:46:03,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:46:02" (1/3) ... [2023-01-28 07:46:03,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3be86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:46:03, skipping insertion in model container [2023-01-28 07:46:03,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:46:03" (2/3) ... [2023-01-28 07:46:03,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3be86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:46:03, skipping insertion in model container [2023-01-28 07:46:03,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:46:03" (3/3) ... [2023-01-28 07:46:03,568 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-01-28 07:46:03,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:46:03,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 07:46:03,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:46:03,683 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 07:46:03,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:03,783 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-01-28 07:46:03,783 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:46:03,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 07:46:03,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:03,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:03,802 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:46:03,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:03,816 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:03,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:03,862 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-01-28 07:46:03,862 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:46:03,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 07:46:03,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-01-28 07:46:06,554 INFO L134 LiptonReduction]: Checked pairs total: 27843 [2023-01-28 07:46:06,554 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-01-28 07:46:06,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:46:06,568 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;@2c1f9bc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:46:06,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:46:06,574 INFO L130 PetriNetUnfolder]: 6/40 cut-off events. [2023-01-28 07:46:06,574 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:46:06,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:46:06,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:46:06,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:46:06,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:46:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1762064662, now seen corresponding path program 1 times [2023-01-28 07:46:06,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:46:06,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031578176] [2023-01-28 07:46:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:46:06,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:46:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:46:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:46:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:46:06,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031578176] [2023-01-28 07:46:06,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031578176] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:46:06,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:46:06,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:46:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621502935] [2023-01-28 07:46:06,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:46:06,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:46:06,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:46:06,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:46:06,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:46:06,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2023-01-28 07:46:06,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 79 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2023-01-28 07:46:06,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:46:06,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2023-01-28 07:46:06,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:46:07,311 INFO L130 PetriNetUnfolder]: 4222/7234 cut-off events. [2023-01-28 07:46:07,312 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-01-28 07:46:07,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14076 conditions, 7234 events. 4222/7234 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 45893 event pairs, 1678 based on Foata normal form. 855/6730 useless extension candidates. Maximal degree in co-relation 12944. Up to 4331 conditions per place. [2023-01-28 07:46:07,335 INFO L137 encePairwiseOnDemand]: 319/344 looper letters, 57 selfloop transitions, 3 changer transitions 26/95 dead transitions. [2023-01-28 07:46:07,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 397 flow [2023-01-28 07:46:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:46:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:46:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-01-28 07:46:07,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658914728682171 [2023-01-28 07:46:07,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-01-28 07:46:07,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-01-28 07:46:07,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:46:07,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-01-28 07:46:07,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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) [2023-01-28 07:46:07,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 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) [2023-01-28 07:46:07,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 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) [2023-01-28 07:46:07,372 INFO L175 Difference]: Start difference. First operand has 58 places, 79 transitions, 180 flow. Second operand 3 states and 584 transitions. [2023-01-28 07:46:07,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 397 flow [2023-01-28 07:46:07,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:46:07,379 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 141 flow [2023-01-28 07:46:07,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-01-28 07:46:07,385 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-01-28 07:46:07,385 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 141 flow [2023-01-28 07:46:07,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2023-01-28 07:46:07,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:46:07,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:46:07,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:46:07,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:46:07,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:46:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 266721376, now seen corresponding path program 1 times [2023-01-28 07:46:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:46:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982782988] [2023-01-28 07:46:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:46:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:46:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:46:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:46:07,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:46:07,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982782988] [2023-01-28 07:46:07,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982782988] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:46:07,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116657768] [2023-01-28 07:46:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:46:07,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:46:07,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:46:07,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:46:07,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 07:46:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:46:07,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 07:46:07,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:46:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:46:07,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:46:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:46:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116657768] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:46:07,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:46:07,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 07:46:07,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281764027] [2023-01-28 07:46:07,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:46:07,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:46:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:46:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:46:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:46:07,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 344 [2023-01-28 07:46:07,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 141 flow. Second operand has 7 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 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) [2023-01-28 07:46:07,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:46:07,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 344 [2023-01-28 07:46:07,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:46:07,715 INFO L130 PetriNetUnfolder]: 18/56 cut-off events. [2023-01-28 07:46:07,715 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:46:07,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 56 events. 18/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 111. Up to 38 conditions per place. [2023-01-28 07:46:07,716 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-01-28 07:46:07,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 113 flow [2023-01-28 07:46:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:46:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:46:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 661 transitions. [2023-01-28 07:46:07,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803779069767442 [2023-01-28 07:46:07,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 661 transitions. [2023-01-28 07:46:07,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 661 transitions. [2023-01-28 07:46:07,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:46:07,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 661 transitions. [2023-01-28 07:46:07,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 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) [2023-01-28 07:46:07,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 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) [2023-01-28 07:46:07,721 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 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) [2023-01-28 07:46:07,721 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 141 flow. Second operand 4 states and 661 transitions. [2023-01-28 07:46:07,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 113 flow [2023-01-28 07:46:07,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 107 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:46:07,722 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-01-28 07:46:07,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-01-28 07:46:07,722 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -32 predicate places. [2023-01-28 07:46:07,723 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-01-28 07:46:07,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 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) [2023-01-28 07:46:07,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:46:07,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-28 07:46:07,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-01-28 07:46:07,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-28 07:46:07,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 07:46:07,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:46:07,930 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-28 07:46:07,932 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-01-28 07:46:07,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:07,956 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-01-28 07:46:07,956 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:46:07,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 07:46:07,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:07,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:07,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:46:07,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:07,960 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:07,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 07:46:07,979 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-01-28 07:46:07,980 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:46:07,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 07:46:08,008 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-01-28 07:46:10,547 INFO L134 LiptonReduction]: Checked pairs total: 27843 [2023-01-28 07:46:10,547 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-01-28 07:46:10,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 07:46:10,549 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;@2c1f9bc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:46:10,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 07:46:10,551 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-01-28 07:46:10,551 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:46:10,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:46:10,551 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 07:46:10,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:46:10,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:46:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1915609587, now seen corresponding path program 1 times [2023-01-28 07:46:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:46:10,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241889468] [2023-01-28 07:46:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:46:10,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:46:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:46:10,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:46:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:46:10,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:46:10,580 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:46:10,580 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 07:46:10,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 07:46:10,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:46:10,581 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 07:46:10,581 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-01-28 07:46:10,581 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 07:46:10,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 07:46:10,626 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 07:46:10,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 314 transitions, 676 flow [2023-01-28 07:46:10,743 INFO L130 PetriNetUnfolder]: 197/1046 cut-off events. [2023-01-28 07:46:10,743 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-01-28 07:46:10,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 1046 events. 197/1046 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6040 event pairs, 1 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 647. Up to 32 conditions per place. [2023-01-28 07:46:10,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 314 transitions, 676 flow [2023-01-28 07:46:10,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 314 transitions, 676 flow [2023-01-28 07:46:10,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:46:10,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 314 transitions, 676 flow [2023-01-28 07:46:10,766 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 314 transitions, 676 flow [2023-01-28 07:46:10,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 314 transitions, 676 flow [2023-01-28 07:46:10,858 INFO L130 PetriNetUnfolder]: 197/1046 cut-off events. [2023-01-28 07:46:10,858 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-01-28 07:46:10,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 1046 events. 197/1046 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6040 event pairs, 1 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 647. Up to 32 conditions per place. [2023-01-28 07:46:10,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 57240 [2023-01-28 07:46:13,851 INFO L134 LiptonReduction]: Checked pairs total: 138468 [2023-01-28 07:46:13,851 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-01-28 07:46:13,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:46:13,853 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;@2c1f9bc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:46:13,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 07:46:13,855 INFO L130 PetriNetUnfolder]: 7/40 cut-off events. [2023-01-28 07:46:13,855 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 07:46:13,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:46:13,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:46:13,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:46:13,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:46:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1009026459, now seen corresponding path program 1 times [2023-01-28 07:46:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:46:13,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222584770] [2023-01-28 07:46:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:46:13,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:46:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:46:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:46:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:46:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222584770] [2023-01-28 07:46:13,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222584770] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:46:13,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:46:13,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:46:13,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168383848] [2023-01-28 07:46:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:46:13,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:46:13,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:46:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:46:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:46:13,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 519 [2023-01-28 07:46:13,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 152 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 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) [2023-01-28 07:46:13,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:46:13,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 519 [2023-01-28 07:46:13,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand