./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.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/37_stack_lock_p0_vs_concur.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', '62bb9e4cb3fb45378d7de513612dc08e0394f3048289be85bceda07932ec1175'] 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/37_stack_lock_p0_vs_concur.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 62bb9e4cb3fb45378d7de513612dc08e0394f3048289be85bceda07932ec1175 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 15:19:02,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 15:19:02,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-07 15:19:02,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 15:19:02,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 15:19:02,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 15:19:02,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 15:19:02,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 15:19:02,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 15:19:02,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 15:19:02,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 15:19:02,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 15:19:02,578 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 15:19:02,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 15:19:02,579 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 15:19:02,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 15:19:02,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 15:19:02,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 15:19:02,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 15:19:02,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 15:19:02,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 15:19:02,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 15:19:02,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 15:19:02,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 15:19:02,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 15:19:02,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 15:19:02,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 15:19:02,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 15:19:02,581 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 -> 62bb9e4cb3fb45378d7de513612dc08e0394f3048289be85bceda07932ec1175 [2024-11-07 15:19:02,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 15:19:02,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 15:19:02,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 15:19:02,809 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 15:19:02,809 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 15:19:02,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-11-07 15:19:03,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 15:19:04,149 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 15:19:04,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-11-07 15:19:04,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e5a08ecb/0842aa47236e4d9bbca74563c5cb92cd/FLAG954672cee [2024-11-07 15:19:04,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e5a08ecb/0842aa47236e4d9bbca74563c5cb92cd [2024-11-07 15:19:04,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 15:19:04,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 15:19:04,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 15:19:04,517 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 15:19:04,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 15:19:04,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e8670c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04, skipping insertion in model container [2024-11-07 15:19:04,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 15:19:04,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 15:19:04,728 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 15:19:04,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 15:19:04,808 INFO L204 MainTranslator]: Completed translation [2024-11-07 15:19:04,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04 WrapperNode [2024-11-07 15:19:04,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 15:19:04,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 15:19:04,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 15:19:04,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 15:19:04,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,859 INFO L138 Inliner]: procedures = 165, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 207 [2024-11-07 15:19:04,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 15:19:04,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 15:19:04,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 15:19:04,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 15:19:04,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 15:19:04,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 15:19:04,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 15:19:04,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 15:19:04,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (1/1) ... [2024-11-07 15:19:04,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 15:19:04,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:19:04,941 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 15:19:04,943 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 15:19:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-07 15:19:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-07 15:19:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-07 15:19:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-07 15:19:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 15:19:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 15:19:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 15:19:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 15:19:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-07 15:19:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 15:19:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 15:19:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 15:19:04,963 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 15:19:05,069 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 15:19:05,071 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 15:19:05,390 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 15:19:05,390 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 15:19:05,478 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 15:19:05,478 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 15:19:05,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:19:05 BoogieIcfgContainer [2024-11-07 15:19:05,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 15:19:05,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 15:19:05,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 15:19:05,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 15:19:05,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:19:04" (1/3) ... [2024-11-07 15:19:05,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19167474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:19:05, skipping insertion in model container [2024-11-07 15:19:05,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:04" (2/3) ... [2024-11-07 15:19:05,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19167474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:19:05, skipping insertion in model container [2024-11-07 15:19:05,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:19:05" (3/3) ... [2024-11-07 15:19:05,486 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2024-11-07 15:19:05,497 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 15:19:05,498 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-11-07 15:19:05,498 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 15:19:05,562 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:19:05,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 203 transitions, 410 flow [2024-11-07 15:19:05,671 INFO L124 PetriNetUnfolderBase]: 8/212 cut-off events. [2024-11-07 15:19:05,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 15:19:05,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 212 events. 8/212 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 153 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2024-11-07 15:19:05,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 203 transitions, 410 flow [2024-11-07 15:19:05,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 203 transitions, 410 flow [2024-11-07 15:19:05,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:19:05,694 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;@62151d42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:19:05,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-07 15:19:05,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:19:05,716 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2024-11-07 15:19:05,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 15:19:05,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:05,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:05,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-07 15:19:05,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1220382263, now seen corresponding path program 1 times [2024-11-07 15:19:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107097988] [2024-11-07 15:19:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:19:05,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 15:19:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:19:05,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 15:19:05,931 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 15:19:05,932 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-11-07 15:19:05,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2024-11-07 15:19:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2024-11-07 15:19:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2024-11-07 15:19:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2024-11-07 15:19:05,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2024-11-07 15:19:05,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2024-11-07 15:19:05,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2024-11-07 15:19:05,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2024-11-07 15:19:05,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2024-11-07 15:19:05,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2024-11-07 15:19:05,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2024-11-07 15:19:05,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2024-11-07 15:19:05,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2024-11-07 15:19:05,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2024-11-07 15:19:05,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2024-11-07 15:19:05,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2024-11-07 15:19:05,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2024-11-07 15:19:05,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2024-11-07 15:19:05,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 15:19:05,941 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-07 15:19:05,943 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 15:19:05,946 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 15:19:06,010 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:19:06,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 311 transitions, 632 flow [2024-11-07 15:19:06,091 INFO L124 PetriNetUnfolderBase]: 15/331 cut-off events. [2024-11-07 15:19:06,092 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 15:19:06,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 331 events. 15/331 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 632 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 225. Up to 6 conditions per place. [2024-11-07 15:19:06,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 311 transitions, 632 flow [2024-11-07 15:19:06,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 311 transitions, 632 flow [2024-11-07 15:19:06,101 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:19:06,102 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;@62151d42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:19:06,102 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-07 15:19:06,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:19:06,115 INFO L124 PetriNetUnfolderBase]: 4/120 cut-off events. [2024-11-07 15:19:06,115 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 15:19:06,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:06,115 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, 1, 1, 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 15:19:06,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2024-11-07 15:19:06,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1694491301, now seen corresponding path program 1 times [2024-11-07 15:19:06,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:06,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021726499] [2024-11-07 15:19:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:06,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:19:06,250 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 15:19:06,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:19:06,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021726499] [2024-11-07 15:19:06,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021726499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:19:06,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:19:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 15:19:06,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710956269] [2024-11-07 15:19:06,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:19:06,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 15:19:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:19:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 15:19:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 15:19:06,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 311 [2024-11-07 15:19:06,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 311 transitions, 632 flow. Second operand has 2 states, 2 states have (on average 274.0) internal successors, (548), 2 states have internal predecessors, (548), 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 15:19:06,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:19:06,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 311 [2024-11-07 15:19:06,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:19:06,475 INFO L124 PetriNetUnfolderBase]: 44/816 cut-off events. [2024-11-07 15:19:06,475 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-07 15:19:06,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 816 events. 44/816 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4105 event pairs, 30 based on Foata normal form. 94/819 useless extension candidates. Maximal degree in co-relation 194. Up to 73 conditions per place. [2024-11-07 15:19:06,483 INFO L140 encePairwiseOnDemand]: 287/311 looper letters, 12 selfloop transitions, 0 changer transitions 0/276 dead transitions. [2024-11-07 15:19:06,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 276 transitions, 586 flow [2024-11-07 15:19:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 15:19:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 15:19:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 582 transitions. [2024-11-07 15:19:06,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9356913183279743 [2024-11-07 15:19:06,500 INFO L175 Difference]: Start difference. First operand has 303 places, 311 transitions, 632 flow. Second operand 2 states and 582 transitions. [2024-11-07 15:19:06,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 276 transitions, 586 flow [2024-11-07 15:19:06,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 276 transitions, 586 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 15:19:06,513 INFO L231 Difference]: Finished difference. Result has 278 places, 276 transitions, 562 flow [2024-11-07 15:19:06,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=562, PETRI_PLACES=278, PETRI_TRANSITIONS=276} [2024-11-07 15:19:06,517 INFO L277 CegarLoopForPetriNet]: 303 programPoint places, -25 predicate places. [2024-11-07 15:19:06,517 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 276 transitions, 562 flow [2024-11-07 15:19:06,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 274.0) internal successors, (548), 2 states have internal predecessors, (548), 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 15:19:06,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:06,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:06,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 15:19:06,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2024-11-07 15:19:06,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1258044476, now seen corresponding path program 1 times [2024-11-07 15:19:06,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:06,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121456921] [2024-11-07 15:19:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:06,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:19:06,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 15:19:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:19:06,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 15:19:06,620 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 15:19:06,621 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2024-11-07 15:19:06,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2024-11-07 15:19:06,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2024-11-07 15:19:06,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2024-11-07 15:19:06,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2024-11-07 15:19:06,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2024-11-07 15:19:06,622 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2024-11-07 15:19:06,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2024-11-07 15:19:06,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2024-11-07 15:19:06,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 15:19:06,624 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 15:19:06,625 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 15:19:06,625 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 15:19:06,695 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:19:06,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 419 transitions, 856 flow [2024-11-07 15:19:06,762 INFO L124 PetriNetUnfolderBase]: 22/450 cut-off events. [2024-11-07 15:19:06,763 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-07 15:19:06,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 450 events. 22/450 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1293 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 335. Up to 8 conditions per place. [2024-11-07 15:19:06,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 407 places, 419 transitions, 856 flow [2024-11-07 15:19:06,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 419 transitions, 856 flow [2024-11-07 15:19:06,773 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:19:06,773 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;@62151d42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:19:06,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-07 15:19:06,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:19:06,798 INFO L124 PetriNetUnfolderBase]: 5/124 cut-off events. [2024-11-07 15:19:06,798 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 15:19:06,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:06,798 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, 1, 1, 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 15:19:06,799 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-11-07 15:19:06,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1721738691, now seen corresponding path program 1 times [2024-11-07 15:19:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:06,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463487311] [2024-11-07 15:19:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:19:06,891 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 15:19:06,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:19:06,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463487311] [2024-11-07 15:19:06,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463487311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:19:06,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:19:06,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 15:19:06,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22697932] [2024-11-07 15:19:06,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:19:06,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 15:19:06,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:19:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 15:19:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 15:19:06,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 419 [2024-11-07 15:19:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 419 transitions, 856 flow. Second operand has 2 states, 2 states have (on average 364.0) internal successors, (728), 2 states have internal predecessors, (728), 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 15:19:06,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:19:06,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 419 [2024-11-07 15:19:06,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:19:07,652 INFO L124 PetriNetUnfolderBase]: 476/4770 cut-off events. [2024-11-07 15:19:07,653 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2024-11-07 15:19:07,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 4770 events. 476/4770 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 47242 event pairs, 390 based on Foata normal form. 736/4936 useless extension candidates. Maximal degree in co-relation 902. Up to 649 conditions per place. [2024-11-07 15:19:07,698 INFO L140 encePairwiseOnDemand]: 384/419 looper letters, 18 selfloop transitions, 0 changer transitions 0/369 dead transitions. [2024-11-07 15:19:07,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 369 transitions, 792 flow [2024-11-07 15:19:07,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 15:19:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 15:19:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 779 transitions. [2024-11-07 15:19:07,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9295942720763724 [2024-11-07 15:19:07,704 INFO L175 Difference]: Start difference. First operand has 407 places, 419 transitions, 856 flow. Second operand 2 states and 779 transitions. [2024-11-07 15:19:07,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 369 transitions, 792 flow [2024-11-07 15:19:07,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 369 transitions, 790 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 15:19:07,711 INFO L231 Difference]: Finished difference. Result has 371 places, 369 transitions, 754 flow [2024-11-07 15:19:07,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=754, PETRI_PLACES=371, PETRI_TRANSITIONS=369} [2024-11-07 15:19:07,712 INFO L277 CegarLoopForPetriNet]: 407 programPoint places, -36 predicate places. [2024-11-07 15:19:07,712 INFO L471 AbstractCegarLoop]: Abstraction has has 371 places, 369 transitions, 754 flow [2024-11-07 15:19:07,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 364.0) internal successors, (728), 2 states have internal predecessors, (728), 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 15:19:07,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:07,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:07,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 15:19:07,713 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-11-07 15:19:07,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1955840710, now seen corresponding path program 1 times [2024-11-07 15:19:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409588881] [2024-11-07 15:19:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:19:08,404 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 15:19:08,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:19:08,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409588881] [2024-11-07 15:19:08,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409588881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:19:08,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:19:08,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:19:08,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829910952] [2024-11-07 15:19:08,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:19:08,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:19:08,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:19:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:19:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:19:08,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 419 [2024-11-07 15:19:08,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 369 transitions, 754 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 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 15:19:08,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:19:08,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 419 [2024-11-07 15:19:08,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:19:12,544 INFO L124 PetriNetUnfolderBase]: 6098/30690 cut-off events. [2024-11-07 15:19:12,544 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2024-11-07 15:19:12,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40433 conditions, 30690 events. 6098/30690 cut-off events. For 1231/1231 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 425720 event pairs, 1985 based on Foata normal form. 0/27157 useless extension candidates. Maximal degree in co-relation 40427. Up to 4781 conditions per place. [2024-11-07 15:19:12,840 INFO L140 encePairwiseOnDemand]: 392/419 looper letters, 96 selfloop transitions, 29 changer transitions 0/448 dead transitions. [2024-11-07 15:19:12,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 448 transitions, 1202 flow [2024-11-07 15:19:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:19:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 15:19:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2139 transitions. [2024-11-07 15:19:12,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.850835322195704 [2024-11-07 15:19:12,849 INFO L175 Difference]: Start difference. First operand has 371 places, 369 transitions, 754 flow. Second operand 6 states and 2139 transitions. [2024-11-07 15:19:12,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 448 transitions, 1202 flow [2024-11-07 15:19:12,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 448 transitions, 1202 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 15:19:12,860 INFO L231 Difference]: Finished difference. Result has 381 places, 397 transitions, 978 flow [2024-11-07 15:19:12,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=978, PETRI_PLACES=381, PETRI_TRANSITIONS=397} [2024-11-07 15:19:12,862 INFO L277 CegarLoopForPetriNet]: 407 programPoint places, -26 predicate places. [2024-11-07 15:19:12,863 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 397 transitions, 978 flow [2024-11-07 15:19:12,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 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 15:19:12,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:12,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:12,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 15:19:12,865 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-11-07 15:19:12,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash -977166462, now seen corresponding path program 1 times [2024-11-07 15:19:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:12,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007984293] [2024-11-07 15:19:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:12,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:19:12,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 15:19:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:19:12,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 15:19:12,937 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2024-11-07 15:19:12,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2024-11-07 15:19:12,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2024-11-07 15:19:12,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2024-11-07 15:19:12,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2024-11-07 15:19:12,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2024-11-07 15:19:12,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2024-11-07 15:19:12,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2024-11-07 15:19:12,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2024-11-07 15:19:12,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2024-11-07 15:19:12,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2024-11-07 15:19:12,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2024-11-07 15:19:12,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2024-11-07 15:19:12,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2024-11-07 15:19:12,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 15:19:12,942 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-07 15:19:12,942 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 15:19:12,942 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 15:19:13,028 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 15:19:13,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 527 transitions, 1082 flow [2024-11-07 15:19:13,128 INFO L124 PetriNetUnfolderBase]: 29/569 cut-off events. [2024-11-07 15:19:13,128 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-07 15:19:13,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 569 events. 29/569 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1976 event pairs, 0 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 458. Up to 10 conditions per place. [2024-11-07 15:19:13,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 511 places, 527 transitions, 1082 flow [2024-11-07 15:19:13,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 511 places, 527 transitions, 1082 flow [2024-11-07 15:19:13,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:19:13,148 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;@62151d42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:19:13,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2024-11-07 15:19:13,157 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 15:19:13,158 INFO L124 PetriNetUnfolderBase]: 4/120 cut-off events. [2024-11-07 15:19:13,158 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 15:19:13,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:13,158 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, 1, 1, 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 15:19:13,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2024-11-07 15:19:13,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1539451604, now seen corresponding path program 1 times [2024-11-07 15:19:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:13,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463560747] [2024-11-07 15:19:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:19:13,212 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 15:19:13,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:19:13,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463560747] [2024-11-07 15:19:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463560747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:19:13,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:19:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 15:19:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713190947] [2024-11-07 15:19:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:19:13,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 15:19:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:19:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 15:19:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 15:19:13,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 527 [2024-11-07 15:19:13,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 527 transitions, 1082 flow. Second operand has 2 states, 2 states have (on average 454.0) internal successors, (908), 2 states have internal predecessors, (908), 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 15:19:13,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:19:13,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 527 [2024-11-07 15:19:13,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:19:17,682 INFO L124 PetriNetUnfolderBase]: 4148/29574 cut-off events. [2024-11-07 15:19:17,682 INFO L125 PetriNetUnfolderBase]: For 3691/3691 co-relation queries the response was YES. [2024-11-07 15:19:17,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36008 conditions, 29574 events. 4148/29574 cut-off events. For 3691/3691 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 413754 event pairs, 3630 based on Foata normal form. 5452/31581 useless extension candidates. Maximal degree in co-relation 5546. Up to 5185 conditions per place. [2024-11-07 15:19:18,037 INFO L140 encePairwiseOnDemand]: 481/527 looper letters, 24 selfloop transitions, 0 changer transitions 0/462 dead transitions. [2024-11-07 15:19:18,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 462 transitions, 1000 flow [2024-11-07 15:19:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 15:19:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 15:19:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 976 transitions. [2024-11-07 15:19:18,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9259962049335864 [2024-11-07 15:19:18,040 INFO L175 Difference]: Start difference. First operand has 511 places, 527 transitions, 1082 flow. Second operand 2 states and 976 transitions. [2024-11-07 15:19:18,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 462 transitions, 1000 flow [2024-11-07 15:19:18,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 462 transitions, 994 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-07 15:19:18,049 INFO L231 Difference]: Finished difference. Result has 464 places, 462 transitions, 946 flow [2024-11-07 15:19:18,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=946, PETRI_PLACES=464, PETRI_TRANSITIONS=462} [2024-11-07 15:19:18,051 INFO L277 CegarLoopForPetriNet]: 511 programPoint places, -47 predicate places. [2024-11-07 15:19:18,051 INFO L471 AbstractCegarLoop]: Abstraction has has 464 places, 462 transitions, 946 flow [2024-11-07 15:19:18,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 454.0) internal successors, (908), 2 states have internal predecessors, (908), 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 15:19:18,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:18,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:18,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 15:19:18,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2024-11-07 15:19:18,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1630565323, now seen corresponding path program 1 times [2024-11-07 15:19:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991093491] [2024-11-07 15:19:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:19:18,512 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 15:19:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:19:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991093491] [2024-11-07 15:19:18,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991093491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:19:18,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:19:18,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:19:18,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057891672] [2024-11-07 15:19:18,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:19:18,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:19:18,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:19:18,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:19:18,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:19:19,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 527 [2024-11-07 15:19:19,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 462 transitions, 946 flow. Second operand has 6 states, 6 states have (on average 426.5) internal successors, (2559), 6 states have internal predecessors, (2559), 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 15:19:19,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:19:19,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 527 [2024-11-07 15:19:19,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 15:19:46,171 INFO L124 PetriNetUnfolderBase]: 45378/189988 cut-off events. [2024-11-07 15:19:46,171 INFO L125 PetriNetUnfolderBase]: For 9127/9127 co-relation queries the response was YES. [2024-11-07 15:19:48,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258352 conditions, 189988 events. 45378/189988 cut-off events. For 9127/9127 co-relation queries the response was YES. Maximal size of possible extension queue 4950. Compared 3257393 event pairs, 15907 based on Foata normal form. 0/167868 useless extension candidates. Maximal degree in co-relation 258345. Up to 34198 conditions per place. [2024-11-07 15:19:49,068 INFO L140 encePairwiseOnDemand]: 499/527 looper letters, 122 selfloop transitions, 33 changer transitions 0/565 dead transitions. [2024-11-07 15:19:49,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 565 transitions, 1522 flow [2024-11-07 15:19:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:19:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 15:19:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2709 transitions. [2024-11-07 15:19:49,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8567362428842504 [2024-11-07 15:19:49,073 INFO L175 Difference]: Start difference. First operand has 464 places, 462 transitions, 946 flow. Second operand 6 states and 2709 transitions. [2024-11-07 15:19:49,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 565 transitions, 1522 flow [2024-11-07 15:19:49,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 565 transitions, 1522 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 15:19:49,099 INFO L231 Difference]: Finished difference. Result has 474 places, 494 transitions, 1196 flow [2024-11-07 15:19:49,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1196, PETRI_PLACES=474, PETRI_TRANSITIONS=494} [2024-11-07 15:19:49,100 INFO L277 CegarLoopForPetriNet]: 511 programPoint places, -37 predicate places. [2024-11-07 15:19:49,100 INFO L471 AbstractCegarLoop]: Abstraction has has 474 places, 494 transitions, 1196 flow [2024-11-07 15:19:49,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 426.5) internal successors, (2559), 6 states have internal predecessors, (2559), 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 15:19:49,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 15:19:49,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:49,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 15:19:49,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2024-11-07 15:19:49,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:19:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2033722592, now seen corresponding path program 1 times [2024-11-07 15:19:49,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:19:49,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413057685] [2024-11-07 15:19:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:19:49,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:19:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:19:49,586 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 15:19:49,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:19:49,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413057685] [2024-11-07 15:19:49,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413057685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:19:49,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:19:49,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:19:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570411301] [2024-11-07 15:19:49,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:19:49,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:19:49,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:19:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:19:49,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:19:50,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 527 [2024-11-07 15:19:50,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 494 transitions, 1196 flow. Second operand has 6 states, 6 states have (on average 426.6666666666667) internal successors, (2560), 6 states have internal predecessors, (2560), 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 15:19:50,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 15:19:50,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 527 [2024-11-07 15:19:50,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand