./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC --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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:20:29,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:20:29,601 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-23 23:20:29,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:20:29,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:20:29,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:20:29,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:20:29,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:20:29,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:20:29,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:20:29,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:20:29,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:20:29,639 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:20:29,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:20:29,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:20:29,640 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:20:29,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:20:29,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:20:29,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:20:29,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:20:29,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:20:29,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:20:29,641 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-23 23:20:29,641 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:20:29,641 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:20:29,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:20:29,641 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:20:29,641 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:20:29,642 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:20:29,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:20:29,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:20:29,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:20:29,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:20:29,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:20:29,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:20:29,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:20:29,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:20:29,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:20:29,643 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:20:29,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:20:29,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:20:29,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:20:29,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:20:29,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:20:29,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:20:29,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:20:29,644 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC 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 -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2024-11-23 23:20:29,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:20:29,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:20:29,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:20:29,985 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:20:29,987 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:20:29,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-23 23:20:33,047 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/data/8232c1de2/2a1d07bb897f4a2993ce73a218efc1e2/FLAG46c297449 [2024-11-23 23:20:33,402 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:20:33,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-23 23:20:33,418 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/data/8232c1de2/2a1d07bb897f4a2993ce73a218efc1e2/FLAG46c297449 [2024-11-23 23:20:33,433 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/data/8232c1de2/2a1d07bb897f4a2993ce73a218efc1e2 [2024-11-23 23:20:33,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:20:33,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:20:33,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:20:33,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:20:33,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:20:33,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:33,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ab7c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33, skipping insertion in model container [2024-11-23 23:20:33,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:33,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:20:33,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:20:33,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:20:33,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:20:33,958 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:20:33,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33 WrapperNode [2024-11-23 23:20:33,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:20:33,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:20:33,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:20:33,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:20:33,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:33,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,020 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 150 [2024-11-23 23:20:34,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:20:34,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:20:34,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:20:34,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:20:34,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,045 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:20:34,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:20:34,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:20:34,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:20:34,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (1/1) ... [2024-11-23 23:20:34,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:20:34,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:34,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:20:34,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966493d1-192d-405e-8b62-7454d7013a64/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:20:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-23 23:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-23 23:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 23:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:20:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-23 23:20:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-23 23:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-23 23:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 23:20:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:20:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:20:34,152 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 23:20:34,312 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:20:34,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:20:34,797 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:20:34,797 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:20:34,853 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:20:34,853 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 23:20:34,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:20:34 BoogieIcfgContainer [2024-11-23 23:20:34,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:20:34,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:20:34,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:20:34,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:20:34,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:20:33" (1/3) ... [2024-11-23 23:20:34,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dd1009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:20:34, skipping insertion in model container [2024-11-23 23:20:34,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:33" (2/3) ... [2024-11-23 23:20:34,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dd1009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:20:34, skipping insertion in model container [2024-11-23 23:20:34,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:20:34" (3/3) ... [2024-11-23 23:20:34,864 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2024-11-23 23:20:34,887 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:20:34,889 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_12-ptr_racefree.i that has 2 procedures, 208 locations, 1 initial locations, 6 loop locations, and 7 error locations. [2024-11-23 23:20:34,889 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:20:35,039 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-23 23:20:35,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 221 transitions, 449 flow [2024-11-23 23:20:35,278 INFO L124 PetriNetUnfolderBase]: 19/285 cut-off events. [2024-11-23 23:20:35,283 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 23:20:35,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 285 events. 19/285 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 720 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 148. Up to 4 conditions per place. [2024-11-23 23:20:35,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 221 transitions, 449 flow [2024-11-23 23:20:35,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 221 transitions, 449 flow [2024-11-23 23:20:35,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:20:35,332 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;@7351fee9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:20:35,332 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-23 23:20:35,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:20:35,370 INFO L124 PetriNetUnfolderBase]: 2/113 cut-off events. [2024-11-23 23:20:35,370 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:20:35,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:20:35,371 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:35,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-23 23:20:35,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2051162883, now seen corresponding path program 1 times [2024-11-23 23:20:35,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:35,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830334067] [2024-11-23 23:20:35,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:35,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:36,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:36,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830334067] [2024-11-23 23:20:36,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830334067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:36,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:36,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:36,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596846900] [2024-11-23 23:20:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:36,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:20:36,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:37,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:20:37,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:20:37,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 221 [2024-11-23 23:20:37,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 221 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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) [2024-11-23 23:20:37,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:20:37,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 221 [2024-11-23 23:20:37,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:20:38,604 INFO L124 PetriNetUnfolderBase]: 579/2205 cut-off events. [2024-11-23 23:20:38,606 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 23:20:38,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 2205 events. 579/2205 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 14983 event pairs, 357 based on Foata normal form. 226/2282 useless extension candidates. Maximal degree in co-relation 3264. Up to 1080 conditions per place. [2024-11-23 23:20:38,631 INFO L140 encePairwiseOnDemand]: 186/221 looper letters, 73 selfloop transitions, 70 changer transitions 0/300 dead transitions. [2024-11-23 23:20:38,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 300 transitions, 893 flow [2024-11-23 23:20:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:20:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2024-11-23 23:20:38,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8506787330316742 [2024-11-23 23:20:38,662 INFO L175 Difference]: Start difference. First operand has 211 places, 221 transitions, 449 flow. Second operand 6 states and 1128 transitions. [2024-11-23 23:20:38,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 300 transitions, 893 flow [2024-11-23 23:20:38,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 300 transitions, 893 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:20:38,686 INFO L231 Difference]: Finished difference. Result has 219 places, 276 transitions, 883 flow [2024-11-23 23:20:38,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=883, PETRI_PLACES=219, PETRI_TRANSITIONS=276} [2024-11-23 23:20:38,696 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 8 predicate places. [2024-11-23 23:20:38,697 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 276 transitions, 883 flow [2024-11-23 23:20:38,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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) [2024-11-23 23:20:38,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:20:38,699 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:38,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:20:38,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-23 23:20:38,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash 549418401, now seen corresponding path program 1 times [2024-11-23 23:20:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510491044] [2024-11-23 23:20:38,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510491044] [2024-11-23 23:20:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510491044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:38,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:38,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:38,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052413119] [2024-11-23 23:20:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:38,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:38,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:38,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:38,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:38,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 221 [2024-11-23 23:20:38,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 276 transitions, 883 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2024-11-23 23:20:38,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:20:38,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 221 [2024-11-23 23:20:38,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:20:39,263 INFO L124 PetriNetUnfolderBase]: 185/1196 cut-off events. [2024-11-23 23:20:39,264 INFO L125 PetriNetUnfolderBase]: For 118/132 co-relation queries the response was YES. [2024-11-23 23:20:39,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 1196 events. 185/1196 cut-off events. For 118/132 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6910 event pairs, 35 based on Foata normal form. 1/1122 useless extension candidates. Maximal degree in co-relation 1745. Up to 223 conditions per place. [2024-11-23 23:20:39,272 INFO L140 encePairwiseOnDemand]: 218/221 looper letters, 22 selfloop transitions, 3 changer transitions 0/282 dead transitions. [2024-11-23 23:20:39,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 282 transitions, 945 flow [2024-11-23 23:20:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:20:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2024-11-23 23:20:39,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8974358974358975 [2024-11-23 23:20:39,275 INFO L175 Difference]: Start difference. First operand has 219 places, 276 transitions, 883 flow. Second operand 3 states and 595 transitions. [2024-11-23 23:20:39,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 282 transitions, 945 flow [2024-11-23 23:20:39,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 282 transitions, 945 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:20:39,291 INFO L231 Difference]: Finished difference. Result has 222 places, 276 transitions, 894 flow [2024-11-23 23:20:39,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=894, PETRI_PLACES=222, PETRI_TRANSITIONS=276} [2024-11-23 23:20:39,294 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 11 predicate places. [2024-11-23 23:20:39,294 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 276 transitions, 894 flow [2024-11-23 23:20:39,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2024-11-23 23:20:39,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:20:39,295 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:39,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:20:39,296 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-23 23:20:39,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1704209905, now seen corresponding path program 1 times [2024-11-23 23:20:39,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:39,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729353106] [2024-11-23 23:20:39,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:40,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:40,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729353106] [2024-11-23 23:20:40,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729353106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:40,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:40,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:40,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552319276] [2024-11-23 23:20:40,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:40,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:20:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:40,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:20:40,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:20:40,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 221 [2024-11-23 23:20:40,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 276 transitions, 894 flow. Second operand has 6 states, 6 states have (on average 171.16666666666666) internal successors, (1027), 6 states have internal predecessors, (1027), 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) [2024-11-23 23:20:40,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:20:40,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 221 [2024-11-23 23:20:40,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:20:40,878 INFO L124 PetriNetUnfolderBase]: 370/1611 cut-off events. [2024-11-23 23:20:40,878 INFO L125 PetriNetUnfolderBase]: For 462/474 co-relation queries the response was YES. [2024-11-23 23:20:40,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 1611 events. 370/1611 cut-off events. For 462/474 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10555 event pairs, 96 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 3125. Up to 642 conditions per place. [2024-11-23 23:20:40,891 INFO L140 encePairwiseOnDemand]: 203/221 looper letters, 112 selfloop transitions, 53 changer transitions 0/335 dead transitions. [2024-11-23 23:20:40,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 335 transitions, 1466 flow [2024-11-23 23:20:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:20:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1097 transitions. [2024-11-23 23:20:40,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8273001508295625 [2024-11-23 23:20:40,899 INFO L175 Difference]: Start difference. First operand has 222 places, 276 transitions, 894 flow. Second operand 6 states and 1097 transitions. [2024-11-23 23:20:40,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 335 transitions, 1466 flow [2024-11-23 23:20:40,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 335 transitions, 1460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:20:40,917 INFO L231 Difference]: Finished difference. Result has 230 places, 319 transitions, 1376 flow [2024-11-23 23:20:40,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1376, PETRI_PLACES=230, PETRI_TRANSITIONS=319} [2024-11-23 23:20:40,919 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 19 predicate places. [2024-11-23 23:20:40,919 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 319 transitions, 1376 flow [2024-11-23 23:20:40,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.16666666666666) internal successors, (1027), 6 states have internal predecessors, (1027), 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) [2024-11-23 23:20:40,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:20:40,921 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:20:40,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:20:40,921 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-23 23:20:40,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash 108766909, now seen corresponding path program 1 times [2024-11-23 23:20:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:40,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735531494] [2024-11-23 23:20:40,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 23:20:40,999 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 23:20:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 23:20:41,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 23:20:41,083 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 23:20:41,084 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-23 23:20:41,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-23 23:20:41,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-23 23:20:41,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-23 23:20:41,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-23 23:20:41,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-23 23:20:41,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-23 23:20:41,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-23 23:20:41,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-23 23:20:41,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-23 23:20:41,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-23 23:20:41,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-23 23:20:41,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:20:41,091 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-23 23:20:41,093 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 23:20:41,094 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-23 23:20:41,163 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 23:20:41,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 287 transitions, 590 flow [2024-11-23 23:20:41,251 INFO L124 PetriNetUnfolderBase]: 34/443 cut-off events. [2024-11-23 23:20:41,251 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-23 23:20:41,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 443 events. 34/443 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1481 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 287. Up to 8 conditions per place. [2024-11-23 23:20:41,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 287 transitions, 590 flow [2024-11-23 23:20:41,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 287 transitions, 590 flow [2024-11-23 23:20:41,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:20:41,263 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;@7351fee9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:20:41,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-23 23:20:41,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:20:41,277 INFO L124 PetriNetUnfolderBase]: 2/113 cut-off events. [2024-11-23 23:20:41,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:20:41,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:20:41,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:41,278 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-23 23:20:41,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:41,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1649467101, now seen corresponding path program 1 times [2024-11-23 23:20:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:41,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828372375] [2024-11-23 23:20:41,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:41,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:41,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828372375] [2024-11-23 23:20:41,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828372375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:41,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:41,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954817024] [2024-11-23 23:20:41,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:41,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:20:41,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:41,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:20:41,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:20:42,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 287 [2024-11-23 23:20:42,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 287 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 195.5) internal successors, (1173), 6 states have internal predecessors, (1173), 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) [2024-11-23 23:20:42,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:20:42,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 287 [2024-11-23 23:20:42,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:20:55,290 INFO L124 PetriNetUnfolderBase]: 29150/68169 cut-off events. [2024-11-23 23:20:55,291 INFO L125 PetriNetUnfolderBase]: For 756/756 co-relation queries the response was YES. [2024-11-23 23:20:55,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113703 conditions, 68169 events. 29150/68169 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 757186 event pairs, 19147 based on Foata normal form. 8132/72324 useless extension candidates. Maximal degree in co-relation 99472. Up to 40547 conditions per place. [2024-11-23 23:20:55,643 INFO L140 encePairwiseOnDemand]: 230/287 looper letters, 122 selfloop transitions, 134 changer transitions 0/449 dead transitions. [2024-11-23 23:20:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 449 transitions, 1431 flow [2024-11-23 23:20:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:20:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1487 transitions. [2024-11-23 23:20:55,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8635307781649245 [2024-11-23 23:20:55,649 INFO L175 Difference]: Start difference. First operand has 272 places, 287 transitions, 590 flow. Second operand 6 states and 1487 transitions. [2024-11-23 23:20:55,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 449 transitions, 1431 flow [2024-11-23 23:20:55,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 449 transitions, 1431 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:20:55,673 INFO L231 Difference]: Finished difference. Result has 280 places, 400 transitions, 1428 flow [2024-11-23 23:20:55,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1428, PETRI_PLACES=280, PETRI_TRANSITIONS=400} [2024-11-23 23:20:55,675 INFO L279 CegarLoopForPetriNet]: 272 programPoint places, 8 predicate places. [2024-11-23 23:20:55,675 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 400 transitions, 1428 flow [2024-11-23 23:20:55,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.5) internal successors, (1173), 6 states have internal predecessors, (1173), 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) [2024-11-23 23:20:55,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:20:55,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:55,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:20:55,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-23 23:20:55,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash 476934049, now seen corresponding path program 1 times [2024-11-23 23:20:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:55,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936737298] [2024-11-23 23:20:55,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:55,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:55,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:55,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936737298] [2024-11-23 23:20:55,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936737298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:55,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:55,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507618974] [2024-11-23 23:20:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:55,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:55,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:55,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:55,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 287 [2024-11-23 23:20:55,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 400 transitions, 1428 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2024-11-23 23:20:55,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:20:55,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 287 [2024-11-23 23:20:55,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:21:00,324 INFO L124 PetriNetUnfolderBase]: 9617/30373 cut-off events. [2024-11-23 23:21:00,324 INFO L125 PetriNetUnfolderBase]: For 5314/5716 co-relation queries the response was YES. [2024-11-23 23:21:00,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54618 conditions, 30373 events. 9617/30373 cut-off events. For 5314/5716 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 341763 event pairs, 3405 based on Foata normal form. 1/27872 useless extension candidates. Maximal degree in co-relation 28177. Up to 8560 conditions per place. [2024-11-23 23:21:00,513 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 32 selfloop transitions, 3 changer transitions 0/408 dead transitions. [2024-11-23 23:21:00,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 408 transitions, 1520 flow [2024-11-23 23:21:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:21:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:21:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2024-11-23 23:21:00,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8826945412311266 [2024-11-23 23:21:00,516 INFO L175 Difference]: Start difference. First operand has 280 places, 400 transitions, 1428 flow. Second operand 3 states and 760 transitions. [2024-11-23 23:21:00,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 408 transitions, 1520 flow [2024-11-23 23:21:00,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 408 transitions, 1520 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:21:00,691 INFO L231 Difference]: Finished difference. Result has 283 places, 402 transitions, 1453 flow [2024-11-23 23:21:00,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1453, PETRI_PLACES=283, PETRI_TRANSITIONS=402} [2024-11-23 23:21:00,692 INFO L279 CegarLoopForPetriNet]: 272 programPoint places, 11 predicate places. [2024-11-23 23:21:00,693 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 402 transitions, 1453 flow [2024-11-23 23:21:00,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2024-11-23 23:21:00,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:21:00,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:21:00,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:21:00,695 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-23 23:21:00,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:21:00,695 INFO L85 PathProgramCache]: Analyzing trace with hash 315121393, now seen corresponding path program 1 times [2024-11-23 23:21:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:21:00,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341142852] [2024-11-23 23:21:00,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:21:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:21:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341142852] [2024-11-23 23:21:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341142852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:21:01,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:21:01,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:21:01,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479157500] [2024-11-23 23:21:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:21:01,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:21:01,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:01,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:21:01,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:21:01,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 287 [2024-11-23 23:21:01,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 402 transitions, 1453 flow. Second operand has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 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) [2024-11-23 23:21:01,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:21:01,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 287 [2024-11-23 23:21:01,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:21:10,115 INFO L124 PetriNetUnfolderBase]: 22789/55945 cut-off events. [2024-11-23 23:21:10,115 INFO L125 PetriNetUnfolderBase]: For 20608/22117 co-relation queries the response was YES. [2024-11-23 23:21:10,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123377 conditions, 55945 events. 22789/55945 cut-off events. For 20608/22117 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 624291 event pairs, 7775 based on Foata normal form. 55/52787 useless extension candidates. Maximal degree in co-relation 123155. Up to 26561 conditions per place. [2024-11-23 23:21:10,457 INFO L140 encePairwiseOnDemand]: 261/287 looper letters, 192 selfloop transitions, 141 changer transitions 0/581 dead transitions. [2024-11-23 23:21:10,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 581 transitions, 2921 flow [2024-11-23 23:21:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:21:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:21:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1441 transitions. [2024-11-23 23:21:10,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8368176538908246 [2024-11-23 23:21:10,462 INFO L175 Difference]: Start difference. First operand has 283 places, 402 transitions, 1453 flow. Second operand 6 states and 1441 transitions. [2024-11-23 23:21:10,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 581 transitions, 2921 flow [2024-11-23 23:21:10,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 581 transitions, 2918 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:21:10,720 INFO L231 Difference]: Finished difference. Result has 292 places, 533 transitions, 2834 flow [2024-11-23 23:21:10,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2834, PETRI_PLACES=292, PETRI_TRANSITIONS=533} [2024-11-23 23:21:10,722 INFO L279 CegarLoopForPetriNet]: 272 programPoint places, 20 predicate places. [2024-11-23 23:21:10,722 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 533 transitions, 2834 flow [2024-11-23 23:21:10,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 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) [2024-11-23 23:21:10,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:21:10,723 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:21:10,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:21:10,724 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-23 23:21:10,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:21:10,725 INFO L85 PathProgramCache]: Analyzing trace with hash 669442015, now seen corresponding path program 1 times [2024-11-23 23:21:10,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:21:10,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542157940] [2024-11-23 23:21:10,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:21:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:10,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:21:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542157940] [2024-11-23 23:21:10,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542157940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:21:10,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:21:10,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:21:10,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642501015] [2024-11-23 23:21:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:21:10,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:21:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:10,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:21:10,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:21:10,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 287 [2024-11-23 23:21:10,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 533 transitions, 2834 flow. Second operand has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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) [2024-11-23 23:21:10,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:21:10,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 287 [2024-11-23 23:21:10,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:21:17,338 INFO L124 PetriNetUnfolderBase]: 13111/41235 cut-off events. [2024-11-23 23:21:17,338 INFO L125 PetriNetUnfolderBase]: For 19971/21268 co-relation queries the response was YES. [2024-11-23 23:21:17,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88589 conditions, 41235 events. 13111/41235 cut-off events. For 19971/21268 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 485804 event pairs, 3251 based on Foata normal form. 72/38187 useless extension candidates. Maximal degree in co-relation 44089. Up to 12453 conditions per place. [2024-11-23 23:21:17,793 INFO L140 encePairwiseOnDemand]: 282/287 looper letters, 56 selfloop transitions, 7 changer transitions 0/565 dead transitions. [2024-11-23 23:21:17,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 565 transitions, 3024 flow [2024-11-23 23:21:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:21:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:21:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1502 transitions. [2024-11-23 23:21:17,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8722415795586528 [2024-11-23 23:21:17,799 INFO L175 Difference]: Start difference. First operand has 292 places, 533 transitions, 2834 flow. Second operand 6 states and 1502 transitions. [2024-11-23 23:21:17,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 565 transitions, 3024 flow [2024-11-23 23:21:18,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 565 transitions, 3006 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-23 23:21:18,053 INFO L231 Difference]: Finished difference. Result has 300 places, 535 transitions, 2848 flow [2024-11-23 23:21:18,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2848, PETRI_PLACES=300, PETRI_TRANSITIONS=535} [2024-11-23 23:21:18,054 INFO L279 CegarLoopForPetriNet]: 272 programPoint places, 28 predicate places. [2024-11-23 23:21:18,054 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 535 transitions, 2848 flow [2024-11-23 23:21:18,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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) [2024-11-23 23:21:18,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:21:18,056 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:21:18,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:21:18,056 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-23 23:21:18,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:21:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1553828858, now seen corresponding path program 1 times [2024-11-23 23:21:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:21:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716013460] [2024-11-23 23:21:18,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:21:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:18,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:21:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716013460] [2024-11-23 23:21:18,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716013460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:21:18,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:21:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:21:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988844932] [2024-11-23 23:21:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:21:18,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:21:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:18,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:21:18,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:21:18,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 287 [2024-11-23 23:21:18,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 535 transitions, 2848 flow. Second operand has 6 states, 6 states have (on average 199.16666666666666) internal successors, (1195), 6 states have internal predecessors, (1195), 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) [2024-11-23 23:21:18,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:21:18,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 287 [2024-11-23 23:21:18,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand