./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:21:23,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:21:23,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:21:23,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:21:23,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:21:23,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:21:23,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:21:23,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:21:23,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:21:23,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:21:23,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:21:23,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:21:23,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:21:23,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:21:23,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:21:23,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:21:23,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:21:23,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:21:23,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:21:23,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:21:23,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:21:23,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:21:23,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:21:23,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:21:23,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:21:23,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:21:23,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:21:23,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:21:23,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:21:23,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:21:23,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:21:23,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:21:23,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:21:23,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:21:23,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:21:23,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:21:23,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:21:23,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:21:23,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:21:23,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:21:23,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:21:23,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:21:23,164 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:21:23,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:21:23,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:21:23,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:21:23,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:21:23,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:21:23,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:21:23,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:21:23,167 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:21:23,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:21:23,169 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:21:23,169 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:21:23,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:21:23,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:21:23,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:21:23,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:21:23,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:21:23,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:21:23,170 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:21:23,170 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:21:23,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:21:23,171 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:21:23,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:21:23,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:21:23,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:21:23,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:21:23,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:21:23,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:21:23,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:21:23,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:21:23,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:21:23,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:21:23,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:21:23,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:21:23,173 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:21:23,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:21:23,174 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:21:23,174 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:21:23,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:21:23,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:21:23,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:21:23,521 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:21:23,522 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:21:23,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-29 18:21:24,562 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:21:24,780 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:21:24,780 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-29 18:21:24,806 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e543b6738/4ed56a0f45244889859121cd5ceb62f4/FLAGc60e85284 [2023-08-29 18:21:24,820 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e543b6738/4ed56a0f45244889859121cd5ceb62f4 [2023-08-29 18:21:24,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:21:24,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:21:24,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:21:24,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:21:24,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:21:24,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:21:24" (1/1) ... [2023-08-29 18:21:24,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717eadbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:24, skipping insertion in model container [2023-08-29 18:21:24,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:21:24" (1/1) ... [2023-08-29 18:21:24,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:21:24,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:21:25,350 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_27-funptr_racing.i[41323,41336] [2023-08-29 18:21:25,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:21:25,400 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:21:25,439 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_27-funptr_racing.i[41323,41336] [2023-08-29 18:21:25,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:21:25,509 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 18:21:25,515 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:21:25,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25 WrapperNode [2023-08-29 18:21:25,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:21:25,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:21:25,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:21:25,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:21:25,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,594 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 185 [2023-08-29 18:21:25,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:21:25,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:21:25,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:21:25,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:21:25,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,642 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:21:25,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:21:25,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:21:25,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:21:25,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (1/1) ... [2023-08-29 18:21:25,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:21:25,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:21:25,686 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) [2023-08-29 18:21:25,713 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 [2023-08-29 18:21:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:21:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:21:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:21:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:21:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:21:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:21:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:21:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:21:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:21:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:21:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:21:25,744 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:21:25,879 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:21:25,881 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:21:26,199 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:21:26,217 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:21:26,217 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 18:21:26,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:21:26 BoogieIcfgContainer [2023-08-29 18:21:26,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:21:26,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:21:26,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:21:26,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:21:26,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:21:24" (1/3) ... [2023-08-29 18:21:26,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9069ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:21:26, skipping insertion in model container [2023-08-29 18:21:26,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:25" (2/3) ... [2023-08-29 18:21:26,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9069ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:21:26, skipping insertion in model container [2023-08-29 18:21:26,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:21:26" (3/3) ... [2023-08-29 18:21:26,226 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-08-29 18:21:26,233 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:21:26,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:21:26,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 18:21:26,242 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:21:26,374 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:21:26,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 193 transitions, 394 flow [2023-08-29 18:21:26,526 INFO L130 PetriNetUnfolder]: 24/243 cut-off events. [2023-08-29 18:21:26,527 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:21:26,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 243 events. 24/243 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 817 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2023-08-29 18:21:26,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 193 transitions, 394 flow [2023-08-29 18:21:26,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 193 transitions, 394 flow [2023-08-29 18:21:26,549 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:21:26,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 193 transitions, 394 flow [2023-08-29 18:21:26,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 193 transitions, 394 flow [2023-08-29 18:21:26,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 193 transitions, 394 flow [2023-08-29 18:21:26,647 INFO L130 PetriNetUnfolder]: 24/243 cut-off events. [2023-08-29 18:21:26,648 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:21:26,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 243 events. 24/243 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 817 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2023-08-29 18:21:26,658 INFO L119 LiptonReduction]: Number of co-enabled transitions 10864 [2023-08-29 18:21:29,995 INFO L134 LiptonReduction]: Checked pairs total: 32458 [2023-08-29 18:21:29,995 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-29 18:21:30,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:21:30,013 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=true, 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;@319a39cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:21:30,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:21:30,018 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-29 18:21:30,018 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:21:30,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:30,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:21:30,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:21:30,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 684602796, now seen corresponding path program 1 times [2023-08-29 18:21:30,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:30,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909320256] [2023-08-29 18:21:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:21:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:21:30,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:21:30,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909320256] [2023-08-29 18:21:30,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909320256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:21:30,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:21:30,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:21:30,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830899751] [2023-08-29 18:21:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:21:30,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:21:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:21:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:21:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:21:30,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 318 [2023-08-29 18:21:30,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 88 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-08-29 18:21:30,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:21:30,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 318 [2023-08-29 18:21:30,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:21:30,550 INFO L130 PetriNetUnfolder]: 365/939 cut-off events. [2023-08-29 18:21:30,551 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:21:30,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 939 events. 365/939 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5868 event pairs, 0 based on Foata normal form. 101/907 useless extension candidates. Maximal degree in co-relation 1660. Up to 733 conditions per place. [2023-08-29 18:21:30,556 INFO L137 encePairwiseOnDemand]: 299/318 looper letters, 67 selfloop transitions, 2 changer transitions 2/99 dead transitions. [2023-08-29 18:21:30,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 348 flow [2023-08-29 18:21:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:21:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:21:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-29 18:21:30,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6362683438155137 [2023-08-29 18:21:30,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-29 18:21:30,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-29 18:21:30,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:21:30,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-29 18:21:30,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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) [2023-08-29 18:21:30,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-08-29 18:21:30,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-08-29 18:21:30,599 INFO L175 Difference]: Start difference. First operand has 74 places, 88 transitions, 184 flow. Second operand 3 states and 607 transitions. [2023-08-29 18:21:30,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 348 flow [2023-08-29 18:21:30,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:21:30,607 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 153 flow [2023-08-29 18:21:30,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-08-29 18:21:30,613 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-29 18:21:30,613 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 153 flow [2023-08-29 18:21:30,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-08-29 18:21:30,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:30,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:21:30,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:21:30,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:21:30,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:30,626 INFO L85 PathProgramCache]: Analyzing trace with hash -233051412, now seen corresponding path program 1 times [2023-08-29 18:21:30,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:30,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247813974] [2023-08-29 18:21:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:21:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:21:30,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:21:30,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247813974] [2023-08-29 18:21:30,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247813974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:21:30,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:21:30,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:21:30,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841537987] [2023-08-29 18:21:30,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:21:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:21:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:21:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:21:30,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:21:30,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 318 [2023-08-29 18:21:30,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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) [2023-08-29 18:21:30,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:21:30,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 318 [2023-08-29 18:21:30,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:21:30,952 INFO L130 PetriNetUnfolder]: 636/1758 cut-off events. [2023-08-29 18:21:30,952 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-29 18:21:30,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 1758 events. 636/1758 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12747 event pairs, 23 based on Foata normal form. 0/1535 useless extension candidates. Maximal degree in co-relation 3162. Up to 753 conditions per place. [2023-08-29 18:21:30,961 INFO L137 encePairwiseOnDemand]: 314/318 looper letters, 82 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-29 18:21:30,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 408 flow [2023-08-29 18:21:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:21:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:21:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-08-29 18:21:30,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6215932914046122 [2023-08-29 18:21:30,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-08-29 18:21:30,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-08-29 18:21:30,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:21:30,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-08-29 18:21:30,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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) [2023-08-29 18:21:30,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-08-29 18:21:30,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-08-29 18:21:30,969 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 153 flow. Second operand 3 states and 593 transitions. [2023-08-29 18:21:30,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 408 flow [2023-08-29 18:21:30,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 110 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:21:30,972 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 171 flow [2023-08-29 18:21:30,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-29 18:21:30,973 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-29 18:21:30,973 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 171 flow [2023-08-29 18:21:30,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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) [2023-08-29 18:21:30,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:30,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:21:30,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:21:30,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:21:30,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash -233034766, now seen corresponding path program 1 times [2023-08-29 18:21:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189631608] [2023-08-29 18:21:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:30,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:21:31,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:21:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:21:31,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:21:31,063 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:21:31,064 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:21:31,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:21:31,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:21:31,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:21:31,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:21:31,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:21:31,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:21:31,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:21:31,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:21:31,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:21:31,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:21:31,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:21:31,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:21:31,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:21:31,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:21:31,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:21:31,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:21:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:21:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:21:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:21:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:21:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:21:31,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:21:31,076 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:21:31,078 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:21:31,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:21:31,126 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:21:31,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 292 transitions, 602 flow [2023-08-29 18:21:31,203 INFO L130 PetriNetUnfolder]: 45/422 cut-off events. [2023-08-29 18:21:31,203 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:21:31,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 422 events. 45/422 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1800 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 270. Up to 8 conditions per place. [2023-08-29 18:21:31,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 292 transitions, 602 flow [2023-08-29 18:21:31,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 292 transitions, 602 flow [2023-08-29 18:21:31,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:21:31,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 292 transitions, 602 flow [2023-08-29 18:21:31,216 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 292 transitions, 602 flow [2023-08-29 18:21:31,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 292 transitions, 602 flow [2023-08-29 18:21:31,288 INFO L130 PetriNetUnfolder]: 45/422 cut-off events. [2023-08-29 18:21:31,288 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:21:31,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 422 events. 45/422 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1800 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 270. Up to 8 conditions per place. [2023-08-29 18:21:31,314 INFO L119 LiptonReduction]: Number of co-enabled transitions 42680 [2023-08-29 18:21:34,506 INFO L134 LiptonReduction]: Checked pairs total: 173833 [2023-08-29 18:21:34,507 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-29 18:21:34,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:21:34,515 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=true, 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;@319a39cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:21:34,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-29 18:21:34,520 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-29 18:21:34,520 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:21:34,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:34,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:21:34,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:21:34,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1214619203, now seen corresponding path program 1 times [2023-08-29 18:21:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:34,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668213148] [2023-08-29 18:21:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:34,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:21:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:21:34,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:21:34,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668213148] [2023-08-29 18:21:34,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668213148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:21:34,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:21:34,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:21:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838967111] [2023-08-29 18:21:34,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:21:34,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:21:34,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:21:34,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:21:34,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:21:34,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 457 [2023-08-29 18:21:34,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 160 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2023-08-29 18:21:34,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:21:34,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 457 [2023-08-29 18:21:34,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:21:37,267 INFO L130 PetriNetUnfolder]: 15142/31421 cut-off events. [2023-08-29 18:21:37,270 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-08-29 18:21:37,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54766 conditions, 31421 events. 15142/31421 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 318368 event pairs, 6864 based on Foata normal form. 3620/31008 useless extension candidates. Maximal degree in co-relation 3093. Up to 23158 conditions per place. [2023-08-29 18:21:37,559 INFO L137 encePairwiseOnDemand]: 426/457 looper letters, 87 selfloop transitions, 2 changer transitions 0/156 dead transitions. [2023-08-29 18:21:37,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 156 transitions, 508 flow [2023-08-29 18:21:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:21:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:21:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-08-29 18:21:37,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.650619985412108 [2023-08-29 18:21:37,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-08-29 18:21:37,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-08-29 18:21:37,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:21:37,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-08-29 18:21:37,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 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) [2023-08-29 18:21:37,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-29 18:21:37,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-29 18:21:37,571 INFO L175 Difference]: Start difference. First operand has 134 places, 160 transitions, 338 flow. Second operand 3 states and 892 transitions. [2023-08-29 18:21:37,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 156 transitions, 508 flow [2023-08-29 18:21:37,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 156 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:21:37,579 INFO L231 Difference]: Finished difference. Result has 136 places, 133 transitions, 294 flow [2023-08-29 18:21:37,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=136, PETRI_TRANSITIONS=133} [2023-08-29 18:21:37,582 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 2 predicate places. [2023-08-29 18:21:37,582 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 133 transitions, 294 flow [2023-08-29 18:21:37,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2023-08-29 18:21:37,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:37,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:21:37,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:21:37,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:21:37,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash -967621772, now seen corresponding path program 1 times [2023-08-29 18:21:37,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:37,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688593514] [2023-08-29 18:21:37,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:37,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:21:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:21:37,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:21:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688593514] [2023-08-29 18:21:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688593514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:21:37,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:21:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:21:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170041728] [2023-08-29 18:21:37,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:21:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:21:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:21:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:21:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:21:37,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 457 [2023-08-29 18:21:37,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 133 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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) [2023-08-29 18:21:37,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:21:37,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 457 [2023-08-29 18:21:37,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:21:41,025 INFO L130 PetriNetUnfolder]: 29767/59516 cut-off events. [2023-08-29 18:21:41,025 INFO L131 PetriNetUnfolder]: For 1381/1381 co-relation queries the response was YES. [2023-08-29 18:21:41,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106845 conditions, 59516 events. 29767/59516 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 1666. Compared 636632 event pairs, 8041 based on Foata normal form. 0/52209 useless extension candidates. Maximal degree in co-relation 106658. Up to 27412 conditions per place. [2023-08-29 18:21:41,414 INFO L137 encePairwiseOnDemand]: 450/457 looper letters, 133 selfloop transitions, 5 changer transitions 0/200 dead transitions. [2023-08-29 18:21:41,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 200 transitions, 722 flow [2023-08-29 18:21:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:21:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:21:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 891 transitions. [2023-08-29 18:21:41,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.649890590809628 [2023-08-29 18:21:41,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 891 transitions. [2023-08-29 18:21:41,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 891 transitions. [2023-08-29 18:21:41,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:21:41,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 891 transitions. [2023-08-29 18:21:41,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 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) [2023-08-29 18:21:41,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-29 18:21:41,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-29 18:21:41,425 INFO L175 Difference]: Start difference. First operand has 136 places, 133 transitions, 294 flow. Second operand 3 states and 891 transitions. [2023-08-29 18:21:41,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 200 transitions, 722 flow [2023-08-29 18:21:41,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 200 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:21:41,436 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 336 flow [2023-08-29 18:21:41,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2023-08-29 18:21:41,438 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 5 predicate places. [2023-08-29 18:21:41,438 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 336 flow [2023-08-29 18:21:41,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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) [2023-08-29 18:21:41,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:41,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:21:41,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:21:41,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:21:41,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:41,440 INFO L85 PathProgramCache]: Analyzing trace with hash 194975025, now seen corresponding path program 1 times [2023-08-29 18:21:41,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:41,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942333425] [2023-08-29 18:21:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:41,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:21:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:21:41,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:21:41,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942333425] [2023-08-29 18:21:41,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942333425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:21:41,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496157058] [2023-08-29 18:21:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:41,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:21:41,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:21:41,509 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) [2023-08-29 18:21:41,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:21:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:21:41,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:21:41,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:21:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:21:41,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:21:41,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496157058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:21:41,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:21:41,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 18:21:41,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761810874] [2023-08-29 18:21:41,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:21:41,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:21:41,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:21:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:21:41,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:21:41,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 457 [2023-08-29 18:21:41,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2023-08-29 18:21:41,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:21:41,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 457 [2023-08-29 18:21:41,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:21:45,475 INFO L130 PetriNetUnfolder]: 30603/61806 cut-off events. [2023-08-29 18:21:45,475 INFO L131 PetriNetUnfolder]: For 5222/5222 co-relation queries the response was YES. [2023-08-29 18:21:45,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113632 conditions, 61806 events. 30603/61806 cut-off events. For 5222/5222 co-relation queries the response was YES. Maximal size of possible extension queue 1785. Compared 667918 event pairs, 24773 based on Foata normal form. 0/53211 useless extension candidates. Maximal degree in co-relation 38630. Up to 44374 conditions per place. [2023-08-29 18:21:45,786 INFO L137 encePairwiseOnDemand]: 452/457 looper letters, 113 selfloop transitions, 7 changer transitions 0/187 dead transitions. [2023-08-29 18:21:45,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 187 transitions, 686 flow [2023-08-29 18:21:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:21:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:21:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-29 18:21:45,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6309263311451495 [2023-08-29 18:21:45,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-29 18:21:45,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-29 18:21:45,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:21:45,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-29 18:21:45,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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) [2023-08-29 18:21:45,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-29 18:21:45,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-29 18:21:45,796 INFO L175 Difference]: Start difference. First operand has 139 places, 138 transitions, 336 flow. Second operand 3 states and 865 transitions. [2023-08-29 18:21:45,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 187 transitions, 686 flow [2023-08-29 18:21:45,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 187 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:21:45,815 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 377 flow [2023-08-29 18:21:45,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=140, PETRI_TRANSITIONS=143} [2023-08-29 18:21:45,819 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 6 predicate places. [2023-08-29 18:21:45,819 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 377 flow [2023-08-29 18:21:45,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2023-08-29 18:21:45,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:45,820 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:21:45,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 18:21:46,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-29 18:21:46,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:21:46,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash -566283571, now seen corresponding path program 1 times [2023-08-29 18:21:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:46,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13159133] [2023-08-29 18:21:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:21:46,045 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:21:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:21:46,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:21:46,063 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:21:46,063 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-08-29 18:21:46,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-08-29 18:21:46,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-08-29 18:21:46,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-08-29 18:21:46,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-08-29 18:21:46,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-08-29 18:21:46,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-08-29 18:21:46,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-08-29 18:21:46,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-08-29 18:21:46,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-08-29 18:21:46,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-08-29 18:21:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-08-29 18:21:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-08-29 18:21:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-08-29 18:21:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-08-29 18:21:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-08-29 18:21:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-08-29 18:21:46,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-08-29 18:21:46,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-08-29 18:21:46,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-08-29 18:21:46,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-08-29 18:21:46,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-08-29 18:21:46,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-08-29 18:21:46,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-08-29 18:21:46,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-08-29 18:21:46,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-08-29 18:21:46,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-08-29 18:21:46,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-08-29 18:21:46,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-08-29 18:21:46,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-08-29 18:21:46,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-08-29 18:21:46,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 18:21:46,069 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 18:21:46,070 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:21:46,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:21:46,112 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:21:46,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 391 transitions, 812 flow [2023-08-29 18:21:46,209 INFO L130 PetriNetUnfolder]: 71/644 cut-off events. [2023-08-29 18:21:46,209 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:21:46,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 644 events. 71/644 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3018 event pairs, 1 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 430. Up to 16 conditions per place. [2023-08-29 18:21:46,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 391 transitions, 812 flow [2023-08-29 18:21:46,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 391 transitions, 812 flow [2023-08-29 18:21:46,229 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:21:46,229 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 391 transitions, 812 flow [2023-08-29 18:21:46,229 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 391 transitions, 812 flow [2023-08-29 18:21:46,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 391 transitions, 812 flow [2023-08-29 18:21:46,408 INFO L130 PetriNetUnfolder]: 71/644 cut-off events. [2023-08-29 18:21:46,409 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:21:46,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 644 events. 71/644 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3018 event pairs, 1 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 430. Up to 16 conditions per place. [2023-08-29 18:21:46,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 93120 [2023-08-29 18:21:50,192 INFO L134 LiptonReduction]: Checked pairs total: 455327 [2023-08-29 18:21:50,192 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-08-29 18:21:50,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:21:50,195 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=true, 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;@319a39cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:21:50,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-29 18:21:50,197 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-29 18:21:50,197 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:21:50,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:50,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:21:50,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 18:21:50,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:50,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1881160462, now seen corresponding path program 1 times [2023-08-29 18:21:50,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:50,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480684513] [2023-08-29 18:21:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:50,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:21:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:21:50,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:21:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480684513] [2023-08-29 18:21:50,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480684513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:21:50,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:21:50,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:21:50,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394068058] [2023-08-29 18:21:50,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:21:50,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:21:50,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:21:50,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:21:50,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:21:50,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 600 [2023-08-29 18:21:50,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 226 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 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) [2023-08-29 18:21:50,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:21:50,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 600 [2023-08-29 18:21:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:22:49,462 INFO L130 PetriNetUnfolder]: 515063/850062 cut-off events. [2023-08-29 18:22:49,462 INFO L131 PetriNetUnfolder]: For 5441/5441 co-relation queries the response was YES. [2023-08-29 18:22:51,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548675 conditions, 850062 events. 515063/850062 cut-off events. For 5441/5441 co-relation queries the response was YES. Maximal size of possible extension queue 19509. Compared 9863671 event pairs, 475497 based on Foata normal form. 113813/862411 useless extension candidates. Maximal degree in co-relation 201952. Up to 694624 conditions per place. [2023-08-29 18:22:55,204 INFO L137 encePairwiseOnDemand]: 557/600 looper letters, 112 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2023-08-29 18:22:55,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 211 transitions, 680 flow [2023-08-29 18:22:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:22:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:22:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1184 transitions. [2023-08-29 18:22:55,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6577777777777778 [2023-08-29 18:22:55,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1184 transitions. [2023-08-29 18:22:55,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1184 transitions. [2023-08-29 18:22:55,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:22:55,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1184 transitions. [2023-08-29 18:22:55,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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) [2023-08-29 18:22:55,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 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) [2023-08-29 18:22:55,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 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) [2023-08-29 18:22:55,219 INFO L175 Difference]: Start difference. First operand has 188 places, 226 transitions, 482 flow. Second operand 3 states and 1184 transitions. [2023-08-29 18:22:55,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 211 transitions, 680 flow [2023-08-29 18:22:55,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 211 transitions, 680 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:22:55,228 INFO L231 Difference]: Finished difference. Result has 190 places, 187 transitions, 414 flow [2023-08-29 18:22:55,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=190, PETRI_TRANSITIONS=187} [2023-08-29 18:22:55,230 INFO L281 CegarLoopForPetriNet]: 188 programPoint places, 2 predicate places. [2023-08-29 18:22:55,231 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 187 transitions, 414 flow [2023-08-29 18:22:55,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 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) [2023-08-29 18:22:55,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:55,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:22:55,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 18:22:55,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 18:22:55,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1774230564, now seen corresponding path program 1 times [2023-08-29 18:22:55,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:55,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880634316] [2023-08-29 18:22:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:55,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:22:55,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:55,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880634316] [2023-08-29 18:22:55,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880634316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:22:55,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:22:55,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:22:55,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600448093] [2023-08-29 18:22:55,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:22:55,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:22:55,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:55,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:22:55,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:22:55,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 600 [2023-08-29 18:22:55,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 187 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 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) [2023-08-29 18:22:55,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:55,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 600 [2023-08-29 18:22:55,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand