./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:28:48,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:28:48,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:28:48,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:28:48,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:28:48,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:28:48,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:28:48,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:28:48,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:28:48,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:28:48,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:28:48,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:28:48,342 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:28:48,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:28:48,343 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:28:48,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:28:48,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:28:48,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:28:48,344 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c [2025-01-09 21:28:48,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:28:48,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:28:48,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:28:48,589 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:28:48,589 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:28:48,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i [2025-01-09 21:28:49,788 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/601b9ddd8/e1e3242c60944093a7833555ff8e9357/FLAG9298236c8 [2025-01-09 21:28:50,102 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:28:50,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i [2025-01-09 21:28:50,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/601b9ddd8/e1e3242c60944093a7833555ff8e9357/FLAG9298236c8 [2025-01-09 21:28:50,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/601b9ddd8/e1e3242c60944093a7833555ff8e9357 [2025-01-09 21:28:50,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:28:50,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:28:50,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:28:50,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:28:50,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:28:50,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4a5164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50, skipping insertion in model container [2025-01-09 21:28:50,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,402 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:28:50,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:28:50,777 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:28:50,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:28:50,911 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:28:50,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50 WrapperNode [2025-01-09 21:28:50,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:28:50,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:28:50,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:28:50,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:28:50,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,959 INFO L138 Inliner]: procedures = 280, calls = 99, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 618 [2025-01-09 21:28:50,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:28:50,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:28:50,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:28:50,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:28:50,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,990 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:50,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:51,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:51,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:28:51,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:28:51,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:28:51,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:28:51,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (1/1) ... [2025-01-09 21:28:51,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:28:51,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:28:51,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 21:28:51,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 21:28:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 21:28:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-01-09 21:28:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-01-09 21:28:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-01-09 21:28:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 21:28:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-09 21:28:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-09 21:28:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-01-09 21:28:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-01-09 21:28:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-09 21:28:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-09 21:28:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 21:28:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:28:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-01-09 21:28:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2025-01-09 21:28:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2025-01-09 21:28:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:28:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:28:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:28:51,071 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 21:28:51,221 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:28:51,222 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:28:51,809 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:28:51,809 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:28:51,838 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:28:51,839 INFO L312 CfgBuilder]: Removed 13 assume(true) statements. [2025-01-09 21:28:51,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:28:51 BoogieIcfgContainer [2025-01-09 21:28:51,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:28:51,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:28:51,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:28:51,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:28:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:28:50" (1/3) ... [2025-01-09 21:28:51,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e996e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:28:51, skipping insertion in model container [2025-01-09 21:28:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:28:50" (2/3) ... [2025-01-09 21:28:51,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e996e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:28:51, skipping insertion in model container [2025-01-09 21:28:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:28:51" (3/3) ... [2025-01-09 21:28:51,845 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2025-01-09 21:28:51,853 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:28:51,854 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_84-list2_racing2.i that has 4 procedures, 645 locations, 1 initial locations, 19 loop locations, and 44 error locations. [2025-01-09 21:28:51,854 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:28:51,975 INFO L143 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2025-01-09 21:28:52,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 692 transitions, 1423 flow [2025-01-09 21:28:52,626 INFO L124 PetriNetUnfolderBase]: 157/2453 cut-off events. [2025-01-09 21:28:52,629 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-01-09 21:28:52,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 2453 events. 157/2453 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 18080 event pairs, 0 based on Foata normal form. 0/2137 useless extension candidates. Maximal degree in co-relation 1245. Up to 16 conditions per place. [2025-01-09 21:28:52,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 654 places, 692 transitions, 1423 flow [2025-01-09 21:28:52,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 654 places, 692 transitions, 1423 flow [2025-01-09 21:28:52,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:28:52,737 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@70aee983, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:28:52,737 INFO L334 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2025-01-09 21:28:52,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:28:52,744 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2025-01-09 21:28:52,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:28:52,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:28:52,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:28:52,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2025-01-09 21:28:52,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:28:52,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1071050382, now seen corresponding path program 1 times [2025-01-09 21:28:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:28:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846507459] [2025-01-09 21:28:52,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:28:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:28:52,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-09 21:28:52,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 21:28:52,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:28:52,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:28:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:28:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:28:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846507459] [2025-01-09 21:28:52,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846507459] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:28:52,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:28:52,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:28:52,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409853781] [2025-01-09 21:28:52,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:28:52,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:28:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:28:53,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:28:53,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:28:53,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 614 out of 692 [2025-01-09 21:28:53,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 692 transitions, 1423 flow. Second operand has 3 states, 3 states have (on average 615.3333333333334) internal successors, (1846), 3 states have internal predecessors, (1846), 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) [2025-01-09 21:28:53,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:28:53,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 614 of 692 [2025-01-09 21:28:53,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:29:08,288 INFO L124 PetriNetUnfolderBase]: 14982/93326 cut-off events. [2025-01-09 21:29:08,289 INFO L125 PetriNetUnfolderBase]: For 2600/2600 co-relation queries the response was YES. [2025-01-09 21:29:09,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113616 conditions, 93326 events. 14982/93326 cut-off events. For 2600/2600 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 1460419 event pairs, 12992 based on Foata normal form. 10370/95113 useless extension candidates. Maximal degree in co-relation 86628. Up to 19299 conditions per place. [2025-01-09 21:29:09,918 INFO L140 encePairwiseOnDemand]: 662/692 looper letters, 46 selfloop transitions, 2 changer transitions 0/660 dead transitions. [2025-01-09 21:29:09,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 660 transitions, 1455 flow [2025-01-09 21:29:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:29:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:29:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1918 transitions. [2025-01-09 21:29:09,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9238921001926782 [2025-01-09 21:29:09,936 INFO L175 Difference]: Start difference. First operand has 654 places, 692 transitions, 1423 flow. Second operand 3 states and 1918 transitions. [2025-01-09 21:29:09,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 660 transitions, 1455 flow [2025-01-09 21:29:09,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 660 transitions, 1455 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:29:09,961 INFO L231 Difference]: Finished difference. Result has 651 places, 660 transitions, 1363 flow [2025-01-09 21:29:09,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1363, PETRI_PLACES=651, PETRI_TRANSITIONS=660} [2025-01-09 21:29:09,966 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, -3 predicate places. [2025-01-09 21:29:09,967 INFO L471 AbstractCegarLoop]: Abstraction has has 651 places, 660 transitions, 1363 flow [2025-01-09 21:29:09,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 615.3333333333334) internal successors, (1846), 3 states have internal predecessors, (1846), 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) [2025-01-09 21:29:09,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:29:09,969 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:29:09,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:29:09,969 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2025-01-09 21:29:09,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:29:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2070142218, now seen corresponding path program 1 times [2025-01-09 21:29:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:29:09,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46089387] [2025-01-09 21:29:09,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:29:09,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:29:09,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-01-09 21:29:09,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-01-09 21:29:09,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:29:09,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:29:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:29:10,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:29:10,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46089387] [2025-01-09 21:29:10,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46089387] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:29:10,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:29:10,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:29:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205235170] [2025-01-09 21:29:10,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:29:10,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:29:10,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:29:10,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:29:10,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:29:10,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 692 [2025-01-09 21:29:10,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 660 transitions, 1363 flow. Second operand has 3 states, 3 states have (on average 613.0) internal successors, (1839), 3 states have internal predecessors, (1839), 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) [2025-01-09 21:29:10,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:29:10,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 692 [2025-01-09 21:29:10,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:29:29,955 INFO L124 PetriNetUnfolderBase]: 18720/124852 cut-off events. [2025-01-09 21:29:29,955 INFO L125 PetriNetUnfolderBase]: For 3215/3215 co-relation queries the response was YES. [2025-01-09 21:29:30,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151380 conditions, 124852 events. 18720/124852 cut-off events. For 3215/3215 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 2041553 event pairs, 17198 based on Foata normal form. 0/113764 useless extension candidates. Maximal degree in co-relation 151326. Up to 25296 conditions per place. [2025-01-09 21:29:31,667 INFO L140 encePairwiseOnDemand]: 687/692 looper letters, 46 selfloop transitions, 1 changer transitions 0/656 dead transitions. [2025-01-09 21:29:31,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 656 transitions, 1449 flow [2025-01-09 21:29:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:29:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:29:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1887 transitions. [2025-01-09 21:29:31,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9089595375722543 [2025-01-09 21:29:31,672 INFO L175 Difference]: Start difference. First operand has 651 places, 660 transitions, 1363 flow. Second operand 3 states and 1887 transitions. [2025-01-09 21:29:31,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 656 transitions, 1449 flow [2025-01-09 21:29:31,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 656 transitions, 1445 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:29:31,755 INFO L231 Difference]: Finished difference. Result has 647 places, 656 transitions, 1353 flow [2025-01-09 21:29:31,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1353, PETRI_PLACES=647, PETRI_TRANSITIONS=656} [2025-01-09 21:29:31,756 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, -7 predicate places. [2025-01-09 21:29:31,757 INFO L471 AbstractCegarLoop]: Abstraction has has 647 places, 656 transitions, 1353 flow [2025-01-09 21:29:31,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 613.0) internal successors, (1839), 3 states have internal predecessors, (1839), 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) [2025-01-09 21:29:31,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:29:31,759 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:29:31,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:29:31,760 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2025-01-09 21:29:31,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:29:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1789412912, now seen corresponding path program 1 times [2025-01-09 21:29:31,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:29:31,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322088326] [2025-01-09 21:29:31,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:29:31,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:29:31,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-01-09 21:29:31,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-01-09 21:29:31,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:29:31,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:29:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:29:32,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:29:32,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322088326] [2025-01-09 21:29:32,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322088326] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:29:32,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:29:32,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:29:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221281705] [2025-01-09 21:29:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:29:32,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:29:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:29:32,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:29:32,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:29:32,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 483 out of 692 [2025-01-09 21:29:32,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 656 transitions, 1353 flow. Second operand has 6 states, 6 states have (on average 484.3333333333333) internal successors, (2906), 6 states have internal predecessors, (2906), 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) [2025-01-09 21:29:32,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:29:32,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 483 of 692 [2025-01-09 21:29:32,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand