./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/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/pthread-ext/11_fmaxsymopt-race.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) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd'] 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/pthread-ext/11_fmaxsymopt-race.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 c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 15:17:14,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 15:17:14,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-07 15:17:14,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 15:17:14,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 15:17:14,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 15:17:14,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 15:17:14,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 15:17:14,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 15:17:14,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 15:17:14,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 15:17:14,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 15:17:14,986 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 15:17:14,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 15:17:14,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 15:17:14,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 15:17:14,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 15:17:14,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 15:17:14,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 15:17:14,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 15:17:14,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 15:17:14,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 15:17:14,988 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-07 15:17:14,988 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 15:17:14,988 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 15:17:14,988 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 15:17:14,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 15:17:14,988 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 15:17:14,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 15:17:14,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 15:17:14,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 15:17:14,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 15:17:14,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 15:17:14,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 15:17:14,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 15:17:14,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 15:17:14,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 15:17:14,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 15:17:14,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 15:17:14,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 15:17:14,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 15:17:14,991 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 -> c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd [2024-11-07 15:17:15,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 15:17:15,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 15:17:15,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 15:17:15,264 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 15:17:15,264 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 15:17:15,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-11-07 15:17:16,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 15:17:16,842 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 15:17:16,843 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-11-07 15:17:16,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5e9d716e/e39d088f9cc94807abc3d86b902dd7fc/FLAGd5f56ab89 [2024-11-07 15:17:16,880 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5e9d716e/e39d088f9cc94807abc3d86b902dd7fc [2024-11-07 15:17:16,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 15:17:16,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 15:17:16,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 15:17:16,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 15:17:16,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 15:17:16,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:17:16" (1/1) ... [2024-11-07 15:17:16,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e81c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:16, skipping insertion in model container [2024-11-07 15:17:16,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:17:16" (1/1) ... [2024-11-07 15:17:16,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 15:17:17,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 15:17:17,224 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 15:17:17,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 15:17:17,312 INFO L204 MainTranslator]: Completed translation [2024-11-07 15:17:17,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17 WrapperNode [2024-11-07 15:17:17,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 15:17:17,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 15:17:17,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 15:17:17,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 15:17:17,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,362 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2024-11-07 15:17:17,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 15:17:17,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 15:17:17,364 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 15:17:17,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 15:17:17,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 15:17:17,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 15:17:17,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 15:17:17,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 15:17:17,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (1/1) ... [2024-11-07 15:17:17,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 15:17:17,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:17,438 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) [2024-11-07 15:17:17,445 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 [2024-11-07 15:17:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-07 15:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-07 15:17:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-07 15:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-07 15:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 15:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 15:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-07 15:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 15:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 15:17:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 15:17:17,463 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 15:17:17,570 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 15:17:17,572 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 15:17:17,799 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 15:17:17,800 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 15:17:17,822 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 15:17:17,822 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 15:17:17,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:17:17 BoogieIcfgContainer [2024-11-07 15:17:17,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 15:17:17,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 15:17:17,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 15:17:17,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 15:17:17,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:17:16" (1/3) ... [2024-11-07 15:17:17,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f99692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:17:17, skipping insertion in model container [2024-11-07 15:17:17,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:17" (2/3) ... [2024-11-07 15:17:17,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f99692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:17:17, skipping insertion in model container [2024-11-07 15:17:17,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:17:17" (3/3) ... [2024-11-07 15:17:17,831 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-race.i [2024-11-07 15:17:17,845 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 15:17:17,845 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-07 15:17:17,846 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 15:17:17,925 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:17:17,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 256 flow [2024-11-07 15:17:18,022 INFO L124 PetriNetUnfolderBase]: 12/135 cut-off events. [2024-11-07 15:17:18,025 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 15:17:18,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 135 events. 12/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2024-11-07 15:17:18,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 256 flow [2024-11-07 15:17:18,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 256 flow [2024-11-07 15:17:18,046 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:17:18,059 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;@446e5d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:17:18,059 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-07 15:17:18,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:17:18,079 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-07 15:17:18,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 15:17:18,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:18,080 INFO L204 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] [2024-11-07 15:17:18,081 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-07 15:17:18,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1413890492, now seen corresponding path program 1 times [2024-11-07 15:17:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698279018] [2024-11-07 15:17:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:18,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:18,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:18,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698279018] [2024-11-07 15:17:18,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698279018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:18,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:18,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:17:18,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432269567] [2024-11-07 15:17:18,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:18,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:17:18,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:18,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:17:18,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:17:19,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 126 [2024-11-07 15:17:19,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2024-11-07 15:17:19,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:19,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 126 [2024-11-07 15:17:19,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:19,187 INFO L124 PetriNetUnfolderBase]: 5/117 cut-off events. [2024-11-07 15:17:19,188 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 15:17:19,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 117 events. 5/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 13/119 useless extension candidates. Maximal degree in co-relation 76. Up to 14 conditions per place. [2024-11-07 15:17:19,190 INFO L140 encePairwiseOnDemand]: 113/126 looper letters, 13 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2024-11-07 15:17:19,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 266 flow [2024-11-07 15:17:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:17:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 15:17:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 614 transitions. [2024-11-07 15:17:19,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8121693121693122 [2024-11-07 15:17:19,210 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 256 flow. Second operand 6 states and 614 transitions. [2024-11-07 15:17:19,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 266 flow [2024-11-07 15:17:19,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 15:17:19,220 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 240 flow [2024-11-07 15:17:19,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2024-11-07 15:17:19,228 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-11-07 15:17:19,229 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 240 flow [2024-11-07 15:17:19,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2024-11-07 15:17:19,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:19,230 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-11-07 15:17:19,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 15:17:19,230 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-07 15:17:19,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1553321828, now seen corresponding path program 1 times [2024-11-07 15:17:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:19,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452213234] [2024-11-07 15:17:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:19,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 15:17:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:19,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452213234] [2024-11-07 15:17:19,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452213234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:19,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:19,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 15:17:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927227214] [2024-11-07 15:17:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:19,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 15:17:19,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:19,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 15:17:19,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:17:19,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 126 [2024-11-07 15:17:19,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-07 15:17:19,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:19,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 126 [2024-11-07 15:17:19,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:19,385 INFO L124 PetriNetUnfolderBase]: 5/129 cut-off events. [2024-11-07 15:17:19,385 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 15:17:19,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 129 events. 5/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 92. Up to 9 conditions per place. [2024-11-07 15:17:19,386 INFO L140 encePairwiseOnDemand]: 123/126 looper letters, 7 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-11-07 15:17:19,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 262 flow [2024-11-07 15:17:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 15:17:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 15:17:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2024-11-07 15:17:19,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8915343915343915 [2024-11-07 15:17:19,390 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 240 flow. Second operand 3 states and 337 transitions. [2024-11-07 15:17:19,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 262 flow [2024-11-07 15:17:19,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 114 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 15:17:19,397 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 242 flow [2024-11-07 15:17:19,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2024-11-07 15:17:19,398 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2024-11-07 15:17:19,398 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 242 flow [2024-11-07 15:17:19,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-07 15:17:19,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:19,398 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-11-07 15:17:19,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 15:17:19,399 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-07 15:17:19,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash -582448135, now seen corresponding path program 1 times [2024-11-07 15:17:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:19,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159159110] [2024-11-07 15:17:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:19,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 15:17:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159159110] [2024-11-07 15:17:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159159110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101887888] [2024-11-07 15:17:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:19,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:19,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:19,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:19,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 15:17:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:19,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 15:17:19,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 15:17:19,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:17:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 15:17:19,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101887888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:17:19,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:17:19,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-07 15:17:19,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338157523] [2024-11-07 15:17:19,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:17:19,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 15:17:19,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:19,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 15:17:19,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-07 15:17:19,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 126 [2024-11-07 15:17:19,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 242 flow. Second operand has 10 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 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) [2024-11-07 15:17:19,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:19,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 126 [2024-11-07 15:17:19,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:19,973 INFO L124 PetriNetUnfolderBase]: 5/144 cut-off events. [2024-11-07 15:17:19,973 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 15:17:19,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 144 events. 5/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 127. Up to 9 conditions per place. [2024-11-07 15:17:19,976 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 11 selfloop transitions, 9 changer transitions 0/122 dead transitions. [2024-11-07 15:17:19,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 300 flow [2024-11-07 15:17:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 15:17:19,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 15:17:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 976 transitions. [2024-11-07 15:17:19,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8606701940035273 [2024-11-07 15:17:19,980 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 242 flow. Second operand 9 states and 976 transitions. [2024-11-07 15:17:19,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 300 flow [2024-11-07 15:17:19,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:19,986 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 290 flow [2024-11-07 15:17:19,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=290, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2024-11-07 15:17:19,987 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-11-07 15:17:19,987 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 290 flow [2024-11-07 15:17:19,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 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) [2024-11-07 15:17:19,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:19,988 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2024-11-07 15:17:20,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 15:17:20,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:20,189 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-07 15:17:20,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:20,190 INFO L85 PathProgramCache]: Analyzing trace with hash 606994649, now seen corresponding path program 2 times [2024-11-07 15:17:20,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:20,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628961395] [2024-11-07 15:17:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:20,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 15:17:20,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:20,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628961395] [2024-11-07 15:17:20,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628961395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:20,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137995827] [2024-11-07 15:17:20,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 15:17:20,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:20,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:20,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:20,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 15:17:20,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 15:17:20,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 15:17:20,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 15:17:20,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 15:17:20,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:17:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 15:17:20,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137995827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:17:20,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:17:20,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-07 15:17:20,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310731847] [2024-11-07 15:17:20,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:17:20,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 15:17:20,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:20,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 15:17:20,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-07 15:17:20,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 126 [2024-11-07 15:17:20,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 290 flow. Second operand has 15 states, 15 states have (on average 108.06666666666666) internal successors, (1621), 15 states have internal predecessors, (1621), 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) [2024-11-07 15:17:20,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:20,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 126 [2024-11-07 15:17:20,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:21,023 INFO L124 PetriNetUnfolderBase]: 5/183 cut-off events. [2024-11-07 15:17:21,023 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-07 15:17:21,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 183 events. 5/183 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 186. Up to 9 conditions per place. [2024-11-07 15:17:21,024 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 14 selfloop transitions, 18 changer transitions 0/134 dead transitions. [2024-11-07 15:17:21,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 428 flow [2024-11-07 15:17:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 15:17:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 15:17:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1943 transitions. [2024-11-07 15:17:21,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8567019400352733 [2024-11-07 15:17:21,029 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 290 flow. Second operand 18 states and 1943 transitions. [2024-11-07 15:17:21,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 428 flow [2024-11-07 15:17:21,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 134 transitions, 416 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:21,033 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 390 flow [2024-11-07 15:17:21,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=390, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2024-11-07 15:17:21,034 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-11-07 15:17:21,034 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 390 flow [2024-11-07 15:17:21,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 108.06666666666666) internal successors, (1621), 15 states have internal predecessors, (1621), 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) [2024-11-07 15:17:21,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:21,035 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 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] [2024-11-07 15:17:21,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 15:17:21,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:21,240 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-07 15:17:21,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash 870487548, now seen corresponding path program 3 times [2024-11-07 15:17:21,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:21,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781552216] [2024-11-07 15:17:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:21,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:17:21,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 15:17:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:17:21,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 15:17:21,372 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 15:17:21,372 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-07 15:17:21,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-07 15:17:21,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 15:17:21,374 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-07 15:17:21,376 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 15:17:21,376 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 15:17:21,414 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:17:21,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 197 transitions, 404 flow [2024-11-07 15:17:21,455 INFO L124 PetriNetUnfolderBase]: 21/217 cut-off events. [2024-11-07 15:17:21,456 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 15:17:21,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 217 events. 21/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2024-11-07 15:17:21,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 197 transitions, 404 flow [2024-11-07 15:17:21,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 197 transitions, 404 flow [2024-11-07 15:17:21,464 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:17:21,465 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;@446e5d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:17:21,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-07 15:17:21,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:17:21,473 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-07 15:17:21,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 15:17:21,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:21,473 INFO L204 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] [2024-11-07 15:17:21,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-07 15:17:21,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash -525192223, now seen corresponding path program 1 times [2024-11-07 15:17:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:21,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382645052] [2024-11-07 15:17:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382645052] [2024-11-07 15:17:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382645052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:21,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:17:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334938449] [2024-11-07 15:17:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:21,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:17:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:17:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:17:21,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 197 [2024-11-07 15:17:21,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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) [2024-11-07 15:17:21,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:21,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 197 [2024-11-07 15:17:21,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:21,995 INFO L124 PetriNetUnfolderBase]: 90/606 cut-off events. [2024-11-07 15:17:21,995 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-07 15:17:21,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 606 events. 90/606 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3405 event pairs, 42 based on Foata normal form. 110/620 useless extension candidates. Maximal degree in co-relation 313. Up to 125 conditions per place. [2024-11-07 15:17:22,000 INFO L140 encePairwiseOnDemand]: 180/197 looper letters, 20 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2024-11-07 15:17:22,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 416 flow [2024-11-07 15:17:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:17:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 15:17:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2024-11-07 15:17:22,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8282571912013537 [2024-11-07 15:17:22,003 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 404 flow. Second operand 6 states and 979 transitions. [2024-11-07 15:17:22,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 416 flow [2024-11-07 15:17:22,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 15:17:22,006 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 376 flow [2024-11-07 15:17:22,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2024-11-07 15:17:22,007 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -4 predicate places. [2024-11-07 15:17:22,007 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 376 flow [2024-11-07 15:17:22,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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) [2024-11-07 15:17:22,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:22,008 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 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] [2024-11-07 15:17:22,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 15:17:22,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-07 15:17:22,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1573277030, now seen corresponding path program 1 times [2024-11-07 15:17:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:22,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996147467] [2024-11-07 15:17:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 15:17:22,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:22,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996147467] [2024-11-07 15:17:22,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996147467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:22,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:22,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 15:17:22,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105249926] [2024-11-07 15:17:22,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:22,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 15:17:22,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:22,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 15:17:22,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:17:22,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 197 [2024-11-07 15:17:22,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2024-11-07 15:17:22,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:22,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 197 [2024-11-07 15:17:22,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:22,134 INFO L124 PetriNetUnfolderBase]: 23/350 cut-off events. [2024-11-07 15:17:22,136 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-07 15:17:22,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 350 events. 23/350 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1173 event pairs, 6 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 337. Up to 24 conditions per place. [2024-11-07 15:17:22,141 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 10 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2024-11-07 15:17:22,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 179 transitions, 404 flow [2024-11-07 15:17:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 15:17:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 15:17:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2024-11-07 15:17:22,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8950930626057529 [2024-11-07 15:17:22,144 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 376 flow. Second operand 3 states and 529 transitions. [2024-11-07 15:17:22,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 179 transitions, 404 flow [2024-11-07 15:17:22,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 179 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 15:17:22,149 INFO L231 Difference]: Finished difference. Result has 177 places, 179 transitions, 378 flow [2024-11-07 15:17:22,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=177, PETRI_TRANSITIONS=179} [2024-11-07 15:17:22,150 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-11-07 15:17:22,150 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 179 transitions, 378 flow [2024-11-07 15:17:22,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2024-11-07 15:17:22,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:22,152 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 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] [2024-11-07 15:17:22,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 15:17:22,152 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-07 15:17:22,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1381101320, now seen corresponding path program 1 times [2024-11-07 15:17:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:22,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501060773] [2024-11-07 15:17:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 15:17:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501060773] [2024-11-07 15:17:22,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501060773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:22,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469314812] [2024-11-07 15:17:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:22,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:22,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:22,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 15:17:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:22,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 15:17:22,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 15:17:22,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:17:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 15:17:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469314812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:17:22,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:17:22,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-07 15:17:22,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772807711] [2024-11-07 15:17:22,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:17:22,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 15:17:22,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 15:17:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-07 15:17:22,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 197 [2024-11-07 15:17:22,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 179 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 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) [2024-11-07 15:17:22,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:22,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 197 [2024-11-07 15:17:22,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:22,609 INFO L124 PetriNetUnfolderBase]: 23/365 cut-off events. [2024-11-07 15:17:22,610 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-07 15:17:22,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 365 events. 23/365 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1146 event pairs, 6 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 372. Up to 24 conditions per place. [2024-11-07 15:17:22,612 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 14 selfloop transitions, 9 changer transitions 0/187 dead transitions. [2024-11-07 15:17:22,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 187 transitions, 442 flow [2024-11-07 15:17:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 15:17:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 15:17:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1546 transitions. [2024-11-07 15:17:22,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8719684151156233 [2024-11-07 15:17:22,616 INFO L175 Difference]: Start difference. First operand has 177 places, 179 transitions, 378 flow. Second operand 9 states and 1546 transitions. [2024-11-07 15:17:22,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 187 transitions, 442 flow [2024-11-07 15:17:22,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 187 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:22,619 INFO L231 Difference]: Finished difference. Result has 187 places, 185 transitions, 426 flow [2024-11-07 15:17:22,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=426, PETRI_PLACES=187, PETRI_TRANSITIONS=185} [2024-11-07 15:17:22,620 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-11-07 15:17:22,620 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 185 transitions, 426 flow [2024-11-07 15:17:22,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 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) [2024-11-07 15:17:22,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:22,622 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-11-07 15:17:22,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 15:17:22,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:22,823 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-07 15:17:22,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash -258899912, now seen corresponding path program 2 times [2024-11-07 15:17:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:22,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105228929] [2024-11-07 15:17:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:22,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 15:17:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105228929] [2024-11-07 15:17:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105228929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035272721] [2024-11-07 15:17:22,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 15:17:22,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:22,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:22,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:22,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 15:17:23,086 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 15:17:23,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 15:17:23,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 15:17:23,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 15:17:23,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:17:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 15:17:23,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035272721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:17:23,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:17:23,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-07 15:17:23,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795322581] [2024-11-07 15:17:23,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:17:23,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 15:17:23,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:23,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 15:17:23,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-07 15:17:23,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 197 [2024-11-07 15:17:23,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 185 transitions, 426 flow. Second operand has 15 states, 15 states have (on average 171.13333333333333) internal successors, (2567), 15 states have internal predecessors, (2567), 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) [2024-11-07 15:17:23,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:23,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 197 [2024-11-07 15:17:23,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:23,616 INFO L124 PetriNetUnfolderBase]: 23/404 cut-off events. [2024-11-07 15:17:23,617 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-07 15:17:23,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 404 events. 23/404 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1146 event pairs, 6 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 334. Up to 24 conditions per place. [2024-11-07 15:17:23,620 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 17 selfloop transitions, 18 changer transitions 0/199 dead transitions. [2024-11-07 15:17:23,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 199 transitions, 570 flow [2024-11-07 15:17:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 15:17:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 15:17:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3080 transitions. [2024-11-07 15:17:23,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8685843203609701 [2024-11-07 15:17:23,630 INFO L175 Difference]: Start difference. First operand has 187 places, 185 transitions, 426 flow. Second operand 18 states and 3080 transitions. [2024-11-07 15:17:23,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 199 transitions, 570 flow [2024-11-07 15:17:23,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 199 transitions, 558 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:23,636 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 526 flow [2024-11-07 15:17:23,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=526, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2024-11-07 15:17:23,639 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2024-11-07 15:17:23,639 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 526 flow [2024-11-07 15:17:23,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 171.13333333333333) internal successors, (2567), 15 states have internal predecessors, (2567), 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) [2024-11-07 15:17:23,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:23,641 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 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] [2024-11-07 15:17:23,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 15:17:23,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-07 15:17:23,846 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-07 15:17:23,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2092416218, now seen corresponding path program 3 times [2024-11-07 15:17:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983264805] [2024-11-07 15:17:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:17:23,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 15:17:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:17:23,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 15:17:23,940 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-07 15:17:23,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-07 15:17:23,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 15:17:23,942 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-07 15:17:23,942 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 15:17:23,942 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 15:17:23,991 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:17:23,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 554 flow [2024-11-07 15:17:24,028 INFO L124 PetriNetUnfolderBase]: 30/299 cut-off events. [2024-11-07 15:17:24,029 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-07 15:17:24,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 299 events. 30/299 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 903 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2024-11-07 15:17:24,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 268 transitions, 554 flow [2024-11-07 15:17:24,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 554 flow [2024-11-07 15:17:24,035 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:17:24,036 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;@446e5d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:17:24,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-07 15:17:24,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:17:24,040 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-07 15:17:24,040 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 15:17:24,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:24,040 INFO L204 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] [2024-11-07 15:17:24,040 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-07 15:17:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -568710291, now seen corresponding path program 1 times [2024-11-07 15:17:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078461566] [2024-11-07 15:17:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:24,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:24,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:24,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078461566] [2024-11-07 15:17:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078461566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:24,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:24,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:17:24,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478165076] [2024-11-07 15:17:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:24,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:17:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:17:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:17:24,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 268 [2024-11-07 15:17:24,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 268 transitions, 554 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2024-11-07 15:17:24,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:24,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 268 [2024-11-07 15:17:24,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:25,059 INFO L124 PetriNetUnfolderBase]: 1081/4144 cut-off events. [2024-11-07 15:17:25,059 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2024-11-07 15:17:25,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 4144 events. 1081/4144 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 39236 event pairs, 630 based on Foata normal form. 923/4280 useless extension candidates. Maximal degree in co-relation 1471. Up to 1318 conditions per place. [2024-11-07 15:17:25,110 INFO L140 encePairwiseOnDemand]: 247/268 looper letters, 27 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2024-11-07 15:17:25,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 243 transitions, 568 flow [2024-11-07 15:17:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:17:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 15:17:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2024-11-07 15:17:25,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2024-11-07 15:17:25,115 INFO L175 Difference]: Start difference. First operand has 248 places, 268 transitions, 554 flow. Second operand 6 states and 1344 transitions. [2024-11-07 15:17:25,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 243 transitions, 568 flow [2024-11-07 15:17:25,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 243 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 15:17:25,121 INFO L231 Difference]: Finished difference. Result has 242 places, 243 transitions, 512 flow [2024-11-07 15:17:25,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=242, PETRI_TRANSITIONS=243} [2024-11-07 15:17:25,122 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -6 predicate places. [2024-11-07 15:17:25,122 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 243 transitions, 512 flow [2024-11-07 15:17:25,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2024-11-07 15:17:25,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:25,124 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2024-11-07 15:17:25,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 15:17:25,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-07 15:17:25,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2102788219, now seen corresponding path program 1 times [2024-11-07 15:17:25,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:25,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287588661] [2024-11-07 15:17:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:25,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-07 15:17:25,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287588661] [2024-11-07 15:17:25,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287588661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:25,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:25,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 15:17:25,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924283736] [2024-11-07 15:17:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:25,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 15:17:25,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 15:17:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:17:25,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 268 [2024-11-07 15:17:25,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 243 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2024-11-07 15:17:25,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:25,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 268 [2024-11-07 15:17:25,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:25,359 INFO L124 PetriNetUnfolderBase]: 95/1031 cut-off events. [2024-11-07 15:17:25,359 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-07 15:17:25,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 1031 events. 95/1031 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6257 event pairs, 42 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 1108. Up to 87 conditions per place. [2024-11-07 15:17:25,379 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 13 selfloop transitions, 2 changer transitions 0/244 dead transitions. [2024-11-07 15:17:25,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 244 transitions, 546 flow [2024-11-07 15:17:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 15:17:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 15:17:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2024-11-07 15:17:25,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8967661691542289 [2024-11-07 15:17:25,383 INFO L175 Difference]: Start difference. First operand has 242 places, 243 transitions, 512 flow. Second operand 3 states and 721 transitions. [2024-11-07 15:17:25,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 244 transitions, 546 flow [2024-11-07 15:17:25,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 244 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 15:17:25,388 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 514 flow [2024-11-07 15:17:25,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2024-11-07 15:17:25,390 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2024-11-07 15:17:25,390 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 514 flow [2024-11-07 15:17:25,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2024-11-07 15:17:25,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:25,391 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2024-11-07 15:17:25,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 15:17:25,391 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-07 15:17:25,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1237560471, now seen corresponding path program 1 times [2024-11-07 15:17:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:25,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933520625] [2024-11-07 15:17:25,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:25,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-07 15:17:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933520625] [2024-11-07 15:17:25,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933520625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086232547] [2024-11-07 15:17:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:25,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:25,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:25,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:25,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 15:17:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:25,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 15:17:25,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-07 15:17:25,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:17:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-07 15:17:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086232547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:17:25,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:17:25,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-07 15:17:25,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796622420] [2024-11-07 15:17:25,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:17:25,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 15:17:25,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:25,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 15:17:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-07 15:17:25,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2024-11-07 15:17:25,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 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) [2024-11-07 15:17:25,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:25,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2024-11-07 15:17:25,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:25,957 INFO L124 PetriNetUnfolderBase]: 95/1046 cut-off events. [2024-11-07 15:17:25,957 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-07 15:17:25,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 1046 events. 95/1046 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6217 event pairs, 42 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 1143. Up to 87 conditions per place. [2024-11-07 15:17:25,970 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 17 selfloop transitions, 9 changer transitions 0/252 dead transitions. [2024-11-07 15:17:25,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 584 flow [2024-11-07 15:17:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 15:17:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 15:17:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2116 transitions. [2024-11-07 15:17:25,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8772802653399668 [2024-11-07 15:17:25,975 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 514 flow. Second operand 9 states and 2116 transitions. [2024-11-07 15:17:25,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 584 flow [2024-11-07 15:17:25,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:25,980 INFO L231 Difference]: Finished difference. Result has 250 places, 250 transitions, 562 flow [2024-11-07 15:17:25,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=562, PETRI_PLACES=250, PETRI_TRANSITIONS=250} [2024-11-07 15:17:25,982 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 2 predicate places. [2024-11-07 15:17:25,982 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 250 transitions, 562 flow [2024-11-07 15:17:25,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 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) [2024-11-07 15:17:25,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:25,983 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-07 15:17:26,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 15:17:26,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-07 15:17:26,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-07 15:17:26,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash 805181609, now seen corresponding path program 2 times [2024-11-07 15:17:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:26,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403912879] [2024-11-07 15:17:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-07 15:17:26,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403912879] [2024-11-07 15:17:26,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403912879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899920852] [2024-11-07 15:17:26,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 15:17:26,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:26,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:26,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:26,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 15:17:26,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 15:17:26,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 15:17:26,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 15:17:26,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-07 15:17:26,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:17:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-07 15:17:26,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899920852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:17:26,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:17:26,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-07 15:17:26,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969677345] [2024-11-07 15:17:26,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:17:26,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 15:17:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 15:17:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-07 15:17:26,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2024-11-07 15:17:26,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 250 transitions, 562 flow. Second operand has 15 states, 15 states have (on average 234.2) internal successors, (3513), 15 states have internal predecessors, (3513), 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) [2024-11-07 15:17:26,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:26,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2024-11-07 15:17:26,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:27,089 INFO L124 PetriNetUnfolderBase]: 95/1085 cut-off events. [2024-11-07 15:17:27,090 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-07 15:17:27,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 1085 events. 95/1085 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6263 event pairs, 42 based on Foata normal form. 3/953 useless extension candidates. Maximal degree in co-relation 1105. Up to 87 conditions per place. [2024-11-07 15:17:27,107 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 20 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2024-11-07 15:17:27,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 264 transitions, 712 flow [2024-11-07 15:17:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 15:17:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 15:17:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4217 transitions. [2024-11-07 15:17:27,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8741708126036484 [2024-11-07 15:17:27,118 INFO L175 Difference]: Start difference. First operand has 250 places, 250 transitions, 562 flow. Second operand 18 states and 4217 transitions. [2024-11-07 15:17:27,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 264 transitions, 712 flow [2024-11-07 15:17:27,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 264 transitions, 700 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:27,125 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 662 flow [2024-11-07 15:17:27,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=662, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2024-11-07 15:17:27,126 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2024-11-07 15:17:27,127 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 662 flow [2024-11-07 15:17:27,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 234.2) internal successors, (3513), 15 states have internal predecessors, (3513), 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) [2024-11-07 15:17:27,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:27,129 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 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] [2024-11-07 15:17:27,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 15:17:27,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-07 15:17:27,330 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-07 15:17:27,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash -968079173, now seen corresponding path program 3 times [2024-11-07 15:17:27,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:27,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839281575] [2024-11-07 15:17:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:27,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:17:27,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 15:17:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:17:27,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 15:17:27,412 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-07 15:17:27,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-07 15:17:27,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-07 15:17:27,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 15:17:27,414 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-07 15:17:27,415 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 15:17:27,415 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 15:17:27,466 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:17:27,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 339 transitions, 706 flow [2024-11-07 15:17:27,516 INFO L124 PetriNetUnfolderBase]: 39/381 cut-off events. [2024-11-07 15:17:27,516 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-07 15:17:27,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 381 events. 39/381 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1314 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 307. Up to 10 conditions per place. [2024-11-07 15:17:27,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 339 transitions, 706 flow [2024-11-07 15:17:27,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 339 transitions, 706 flow [2024-11-07 15:17:27,532 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:17:27,532 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;@446e5d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:17:27,532 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-07 15:17:27,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:17:27,536 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-07 15:17:27,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 15:17:27,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:27,536 INFO L204 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] [2024-11-07 15:17:27,537 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-07 15:17:27,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1283336288, now seen corresponding path program 1 times [2024-11-07 15:17:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289563041] [2024-11-07 15:17:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:27,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:27,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289563041] [2024-11-07 15:17:27,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289563041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:27,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:17:27,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711450462] [2024-11-07 15:17:27,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:27,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:17:27,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:17:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:17:27,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 339 [2024-11-07 15:17:27,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 339 transitions, 706 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 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) [2024-11-07 15:17:27,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:27,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 339 [2024-11-07 15:17:27,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:31,874 INFO L124 PetriNetUnfolderBase]: 10778/30546 cut-off events. [2024-11-07 15:17:31,874 INFO L125 PetriNetUnfolderBase]: For 4130/4130 co-relation queries the response was YES. [2024-11-07 15:17:32,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44999 conditions, 30546 events. 10778/30546 cut-off events. For 4130/4130 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 371606 event pairs, 6804 based on Foata normal form. 7505/31785 useless extension candidates. Maximal degree in co-relation 6943. Up to 12509 conditions per place. [2024-11-07 15:17:32,264 INFO L140 encePairwiseOnDemand]: 314/339 looper letters, 34 selfloop transitions, 5 changer transitions 0/308 dead transitions. [2024-11-07 15:17:32,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 308 transitions, 722 flow [2024-11-07 15:17:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:17:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 15:17:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2024-11-07 15:17:32,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8402163225172075 [2024-11-07 15:17:32,397 INFO L175 Difference]: Start difference. First operand has 313 places, 339 transitions, 706 flow. Second operand 6 states and 1709 transitions. [2024-11-07 15:17:32,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 308 transitions, 722 flow [2024-11-07 15:17:32,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 308 transitions, 716 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-07 15:17:32,404 INFO L231 Difference]: Finished difference. Result has 305 places, 308 transitions, 648 flow [2024-11-07 15:17:32,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=305, PETRI_TRANSITIONS=308} [2024-11-07 15:17:32,405 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-11-07 15:17:32,405 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 308 transitions, 648 flow [2024-11-07 15:17:32,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 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) [2024-11-07 15:17:32,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:32,406 INFO L204 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] [2024-11-07 15:17:32,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 15:17:32,406 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-07 15:17:32,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:32,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1321109678, now seen corresponding path program 1 times [2024-11-07 15:17:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:32,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087918632] [2024-11-07 15:17:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:32,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:32,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:32,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087918632] [2024-11-07 15:17:32,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087918632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:32,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:32,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 15:17:32,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12890196] [2024-11-07 15:17:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:32,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 15:17:32,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 15:17:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:17:32,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 339 [2024-11-07 15:17:32,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 308 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2024-11-07 15:17:32,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:32,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 339 [2024-11-07 15:17:32,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:32,902 INFO L124 PetriNetUnfolderBase]: 365/3128 cut-off events. [2024-11-07 15:17:32,902 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-07 15:17:32,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 3128 events. 365/3128 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 27378 event pairs, 204 based on Foata normal form. 1/2712 useless extension candidates. Maximal degree in co-relation 3529. Up to 330 conditions per place. [2024-11-07 15:17:32,947 INFO L140 encePairwiseOnDemand]: 336/339 looper letters, 16 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2024-11-07 15:17:32,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 309 transitions, 688 flow [2024-11-07 15:17:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 15:17:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 15:17:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2024-11-07 15:17:32,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8977384464110127 [2024-11-07 15:17:32,949 INFO L175 Difference]: Start difference. First operand has 305 places, 308 transitions, 648 flow. Second operand 3 states and 913 transitions. [2024-11-07 15:17:32,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 309 transitions, 688 flow [2024-11-07 15:17:32,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 309 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 15:17:32,954 INFO L231 Difference]: Finished difference. Result has 303 places, 309 transitions, 650 flow [2024-11-07 15:17:32,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=303, PETRI_TRANSITIONS=309} [2024-11-07 15:17:32,955 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -10 predicate places. [2024-11-07 15:17:32,956 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 309 transitions, 650 flow [2024-11-07 15:17:32,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2024-11-07 15:17:32,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:32,956 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:17:32,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 15:17:32,956 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-07 15:17:32,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1049774545, now seen corresponding path program 1 times [2024-11-07 15:17:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140450778] [2024-11-07 15:17:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:32,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:33,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:33,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140450778] [2024-11-07 15:17:33,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140450778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:33,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622064463] [2024-11-07 15:17:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:33,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:33,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:33,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:33,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 15:17:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:33,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-07 15:17:33,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 15:17:33,128 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 15:17:33,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622064463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:33,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 15:17:33,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-07 15:17:33,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426817152] [2024-11-07 15:17:33,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:33,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 15:17:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:33,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 15:17:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:17:33,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 339 [2024-11-07 15:17:33,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 309 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2024-11-07 15:17:33,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:33,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 339 [2024-11-07 15:17:33,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:33,880 INFO L124 PetriNetUnfolderBase]: 1136/6787 cut-off events. [2024-11-07 15:17:33,880 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-11-07 15:17:33,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 6787 events. 1136/6787 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 71357 event pairs, 690 based on Foata normal form. 40/5841 useless extension candidates. Maximal degree in co-relation 8355. Up to 1091 conditions per place. [2024-11-07 15:17:33,959 INFO L140 encePairwiseOnDemand]: 336/339 looper letters, 27 selfloop transitions, 2 changer transitions 0/319 dead transitions. [2024-11-07 15:17:33,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 319 transitions, 743 flow [2024-11-07 15:17:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 15:17:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 15:17:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2024-11-07 15:17:33,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9056047197640118 [2024-11-07 15:17:33,961 INFO L175 Difference]: Start difference. First operand has 303 places, 309 transitions, 650 flow. Second operand 3 states and 921 transitions. [2024-11-07 15:17:33,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 319 transitions, 743 flow [2024-11-07 15:17:33,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 319 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:33,967 INFO L231 Difference]: Finished difference. Result has 305 places, 310 transitions, 660 flow [2024-11-07 15:17:33,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=660, PETRI_PLACES=305, PETRI_TRANSITIONS=310} [2024-11-07 15:17:33,968 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-11-07 15:17:33,968 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 310 transitions, 660 flow [2024-11-07 15:17:33,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2024-11-07 15:17:33,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:33,968 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:17:33,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 15:17:34,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:34,173 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-07 15:17:34,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash -433069135, now seen corresponding path program 1 times [2024-11-07 15:17:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:34,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050283633] [2024-11-07 15:17:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:34,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:34,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050283633] [2024-11-07 15:17:34,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050283633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935965777] [2024-11-07 15:17:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:34,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:34,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:34,245 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:34,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 15:17:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:34,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 15:17:34,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:34,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:17:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:34,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935965777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:17:34,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:17:34,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-07 15:17:34,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219354480] [2024-11-07 15:17:34,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:17:34,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 15:17:34,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:34,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 15:17:34,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-07 15:17:34,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 339 [2024-11-07 15:17:34,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 310 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 296.9) internal successors, (2969), 10 states have internal predecessors, (2969), 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) [2024-11-07 15:17:34,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:34,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 339 [2024-11-07 15:17:34,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:34,972 INFO L124 PetriNetUnfolderBase]: 366/3162 cut-off events. [2024-11-07 15:17:34,972 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-07 15:17:34,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 3162 events. 366/3162 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27214 event pairs, 204 based on Foata normal form. 2/2742 useless extension candidates. Maximal degree in co-relation 3545. Up to 330 conditions per place. [2024-11-07 15:17:35,010 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 20 selfloop transitions, 9 changer transitions 0/318 dead transitions. [2024-11-07 15:17:35,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 736 flow [2024-11-07 15:17:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 15:17:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 15:17:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2686 transitions. [2024-11-07 15:17:35,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8803670927564733 [2024-11-07 15:17:35,013 INFO L175 Difference]: Start difference. First operand has 305 places, 310 transitions, 660 flow. Second operand 9 states and 2686 transitions. [2024-11-07 15:17:35,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 736 flow [2024-11-07 15:17:35,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 318 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:35,021 INFO L231 Difference]: Finished difference. Result has 315 places, 316 transitions, 708 flow [2024-11-07 15:17:35,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=315, PETRI_TRANSITIONS=316} [2024-11-07 15:17:35,022 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 2 predicate places. [2024-11-07 15:17:35,022 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 316 transitions, 708 flow [2024-11-07 15:17:35,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 296.9) internal successors, (2969), 10 states have internal predecessors, (2969), 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) [2024-11-07 15:17:35,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:35,023 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2024-11-07 15:17:35,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 15:17:35,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:35,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-07 15:17:35,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:35,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1329744367, now seen corresponding path program 2 times [2024-11-07 15:17:35,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:35,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566885648] [2024-11-07 15:17:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:35,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:35,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566885648] [2024-11-07 15:17:35,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566885648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521376210] [2024-11-07 15:17:35,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 15:17:35,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:35,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:35,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:35,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 15:17:35,527 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 15:17:35,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 15:17:35,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 15:17:35,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:35,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-07 15:17:35,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-07 15:17:35,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 15:17:35,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-07 15:17:35,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 15:17:35,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-07 15:17:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-07 15:17:35,678 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 15:17:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521376210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:35,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 15:17:35,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-07 15:17:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007393127] [2024-11-07 15:17:35,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:35,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:17:35,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:17:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-07 15:17:35,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 339 [2024-11-07 15:17:35,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 316 transitions, 708 flow. Second operand has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 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) [2024-11-07 15:17:35,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:35,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 339 [2024-11-07 15:17:35,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:37,603 INFO L124 PetriNetUnfolderBase]: 1957/10246 cut-off events. [2024-11-07 15:17:37,603 INFO L125 PetriNetUnfolderBase]: For 1260/1260 co-relation queries the response was YES. [2024-11-07 15:17:37,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13299 conditions, 10246 events. 1957/10246 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 114534 event pairs, 609 based on Foata normal form. 0/8928 useless extension candidates. Maximal degree in co-relation 13188. Up to 983 conditions per place. [2024-11-07 15:17:37,775 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 58 selfloop transitions, 6 changer transitions 0/351 dead transitions. [2024-11-07 15:17:37,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 351 transitions, 966 flow [2024-11-07 15:17:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:17:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 15:17:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1792 transitions. [2024-11-07 15:17:37,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8810226155358899 [2024-11-07 15:17:37,777 INFO L175 Difference]: Start difference. First operand has 315 places, 316 transitions, 708 flow. Second operand 6 states and 1792 transitions. [2024-11-07 15:17:37,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 351 transitions, 966 flow [2024-11-07 15:17:37,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 351 transitions, 960 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 15:17:37,785 INFO L231 Difference]: Finished difference. Result has 318 places, 315 transitions, 712 flow [2024-11-07 15:17:37,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=712, PETRI_PLACES=318, PETRI_TRANSITIONS=315} [2024-11-07 15:17:37,786 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 5 predicate places. [2024-11-07 15:17:37,786 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 315 transitions, 712 flow [2024-11-07 15:17:37,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 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) [2024-11-07 15:17:37,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:37,787 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-07 15:17:37,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 15:17:37,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:37,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-07 15:17:37,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash 952628931, now seen corresponding path program 1 times [2024-11-07 15:17:37,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:37,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336358808] [2024-11-07 15:17:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:37,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-07 15:17:38,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:38,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336358808] [2024-11-07 15:17:38,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336358808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:17:38,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015377348] [2024-11-07 15:17:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:38,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:17:38,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 15:17:38,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 15:17:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:38,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 15:17:38,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:17:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-07 15:17:38,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:17:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-07 15:17:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015377348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:17:38,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:17:38,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-07 15:17:38,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995459981] [2024-11-07 15:17:38,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:17:38,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 15:17:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 15:17:38,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-07 15:17:38,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 339 [2024-11-07 15:17:38,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 315 transitions, 712 flow. Second operand has 15 states, 15 states have (on average 297.26666666666665) internal successors, (4459), 15 states have internal predecessors, (4459), 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) [2024-11-07 15:17:38,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:38,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 339 [2024-11-07 15:17:38,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:17:39,256 INFO L124 PetriNetUnfolderBase]: 365/3201 cut-off events. [2024-11-07 15:17:39,256 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-11-07 15:17:39,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 3201 events. 365/3201 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27176 event pairs, 204 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 3559. Up to 330 conditions per place. [2024-11-07 15:17:39,316 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 23 selfloop transitions, 18 changer transitions 0/329 dead transitions. [2024-11-07 15:17:39,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 329 transitions, 862 flow [2024-11-07 15:17:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 15:17:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 15:17:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5354 transitions. [2024-11-07 15:17:39,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8774172402490986 [2024-11-07 15:17:39,322 INFO L175 Difference]: Start difference. First operand has 318 places, 315 transitions, 712 flow. Second operand 18 states and 5354 transitions. [2024-11-07 15:17:39,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 329 transitions, 862 flow [2024-11-07 15:17:39,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 329 transitions, 850 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 15:17:39,328 INFO L231 Difference]: Finished difference. Result has 334 places, 325 transitions, 806 flow [2024-11-07 15:17:39,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=806, PETRI_PLACES=334, PETRI_TRANSITIONS=325} [2024-11-07 15:17:39,329 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 21 predicate places. [2024-11-07 15:17:39,329 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 325 transitions, 806 flow [2024-11-07 15:17:39,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 297.26666666666665) internal successors, (4459), 15 states have internal predecessors, (4459), 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) [2024-11-07 15:17:39,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:39,331 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 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] [2024-11-07 15:17:39,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 15:17:39,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:17:39,531 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-07 15:17:39,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1109753564, now seen corresponding path program 2 times [2024-11-07 15:17:39,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:39,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549892657] [2024-11-07 15:17:39,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:39,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:17:39,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 15:17:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:17:39,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 15:17:39,600 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-07 15:17:39,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-07 15:17:39,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-07 15:17:39,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-07 15:17:39,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-07 15:17:39,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-07 15:17:39,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 15:17:39,601 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-07 15:17:39,604 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 15:17:39,604 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-07 15:17:39,657 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:17:39,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 410 transitions, 860 flow [2024-11-07 15:17:39,713 INFO L124 PetriNetUnfolderBase]: 48/463 cut-off events. [2024-11-07 15:17:39,713 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-07 15:17:39,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 463 events. 48/463 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1743 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 394. Up to 12 conditions per place. [2024-11-07 15:17:39,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 410 transitions, 860 flow [2024-11-07 15:17:39,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 410 transitions, 860 flow [2024-11-07 15:17:39,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:17:39,726 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;@446e5d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:17:39,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-07 15:17:39,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:17:39,728 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-07 15:17:39,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 15:17:39,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:17:39,728 INFO L204 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] [2024-11-07 15:17:39,728 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-07 15:17:39,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:17:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash 735980218, now seen corresponding path program 1 times [2024-11-07 15:17:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:17:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643432805] [2024-11-07 15:17:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:17:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:17:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:17:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:17:39,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:17:39,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643432805] [2024-11-07 15:17:39,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643432805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:17:39,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:17:39,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:17:39,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208224661] [2024-11-07 15:17:39,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:17:39,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:17:39,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:17:39,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:17:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:17:40,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 410 [2024-11-07 15:17:40,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 410 transitions, 860 flow. Second operand has 6 states, 6 states have (on average 335.5) internal successors, (2013), 6 states have internal predecessors, (2013), 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) [2024-11-07 15:17:40,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:17:40,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 410 [2024-11-07 15:17:40,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand