./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB --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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:14:44,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:14:44,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-28 05:14:44,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:14:44,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:14:44,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:14:44,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:14:44,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:14:44,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:14:44,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:14:44,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:14:44,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:14:44,515 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:14:44,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:14:44,516 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-28 05:14:44,517 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:14:44,517 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:14:44,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:14:44,517 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:14:44,517 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:14:44,518 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:14:44,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:14:44,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:14:44,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:44,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:14:44,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:14:44,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:14:44,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:44,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:14:44,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:14:44,519 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:14:44,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:14:44,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:14:44,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:14:44,520 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:14:44,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:14:44,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:14:44,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:14:44,520 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_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2024-11-28 05:14:44,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:14:44,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:14:44,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:14:44,781 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:14:44,781 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:14:44,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2024-11-28 05:14:47,707 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/data/a994c42d8/8dc42e837804493b944443b8b95b6ca4/FLAG930abf41c [2024-11-28 05:14:48,122 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:14:48,123 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2024-11-28 05:14:48,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/data/a994c42d8/8dc42e837804493b944443b8b95b6ca4/FLAG930abf41c [2024-11-28 05:14:48,287 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/data/a994c42d8/8dc42e837804493b944443b8b95b6ca4 [2024-11-28 05:14:48,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:14:48,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:14:48,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:14:48,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:14:48,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:14:48,303 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:14:48" (1/1) ... [2024-11-28 05:14:48,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6d5fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:48, skipping insertion in model container [2024-11-28 05:14:48,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:14:48" (1/1) ... [2024-11-28 05:14:48,361 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:14:48,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:14:48,955 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:14:49,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:14:49,097 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:14:49,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49 WrapperNode [2024-11-28 05:14:49,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:14:49,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:14:49,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:14:49,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:14:49,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,143 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,195 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 332 [2024-11-28 05:14:49,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:14:49,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:14:49,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:14:49,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:14:49,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,258 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:14:49,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:14:49,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:14:49,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:14:49,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (1/1) ... [2024-11-28 05:14:49,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:49,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:49,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:14:49,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ab21ea-9b7a-4f42-8ee6-0360017ae4a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:14:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:14:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-28 05:14:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-28 05:14:49,372 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-28 05:14:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:14:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-28 05:14:49,373 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 05:14:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:14:49,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:14:49,376 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:14:49,588 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:14:49,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:14:50,346 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:14:50,348 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:14:50,402 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:14:50,402 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-28 05:14:50,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:14:50 BoogieIcfgContainer [2024-11-28 05:14:50,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:14:50,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:14:50,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:14:50,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:14:50,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:14:48" (1/3) ... [2024-11-28 05:14:50,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1532ca2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:14:50, skipping insertion in model container [2024-11-28 05:14:50,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:49" (2/3) ... [2024-11-28 05:14:50,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1532ca2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:14:50, skipping insertion in model container [2024-11-28 05:14:50,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:14:50" (3/3) ... [2024-11-28 05:14:50,418 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2024-11-28 05:14:50,437 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:14:50,439 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_82-list_racefree.i that has 3 procedures, 340 locations, 1 initial locations, 10 loop locations, and 22 error locations. [2024-11-28 05:14:50,439 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:14:50,616 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 05:14:50,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 365 transitions, 750 flow [2024-11-28 05:14:51,024 INFO L124 PetriNetUnfolderBase]: 54/688 cut-off events. [2024-11-28 05:14:51,031 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 05:14:51,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 688 events. 54/688 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3100 event pairs, 0 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 345. Up to 8 conditions per place. [2024-11-28 05:14:51,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 365 transitions, 750 flow [2024-11-28 05:14:51,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 365 transitions, 750 flow [2024-11-28 05:14:51,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:14:51,088 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;@4d1d85bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:14:51,089 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-28 05:14:51,096 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:14:51,096 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2024-11-28 05:14:51,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:14:51,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:51,098 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] [2024-11-28 05:14:51,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-28 05:14:51,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash -756096836, now seen corresponding path program 1 times [2024-11-28 05:14:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:51,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977802553] [2024-11-28 05:14:51,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:51,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977802553] [2024-11-28 05:14:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977802553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:51,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:14:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11223764] [2024-11-28 05:14:51,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:51,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:51,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:51,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:14:51,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 365 [2024-11-28 05:14:51,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 365 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 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) [2024-11-28 05:14:51,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:51,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 365 [2024-11-28 05:14:51,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:14:52,409 INFO L124 PetriNetUnfolderBase]: 210/2384 cut-off events. [2024-11-28 05:14:52,410 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-28 05:14:52,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 2384 events. 210/2384 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 18177 event pairs, 158 based on Foata normal form. 306/2459 useless extension candidates. Maximal degree in co-relation 1884. Up to 333 conditions per place. [2024-11-28 05:14:52,435 INFO L140 encePairwiseOnDemand]: 345/365 looper letters, 25 selfloop transitions, 2 changer transitions 0/345 dead transitions. [2024-11-28 05:14:52,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 345 transitions, 764 flow [2024-11-28 05:14:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:14:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1002 transitions. [2024-11-28 05:14:52,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.915068493150685 [2024-11-28 05:14:52,463 INFO L175 Difference]: Start difference. First operand has 346 places, 365 transitions, 750 flow. Second operand 3 states and 1002 transitions. [2024-11-28 05:14:52,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 345 transitions, 764 flow [2024-11-28 05:14:52,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 345 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:14:52,482 INFO L231 Difference]: Finished difference. Result has 345 places, 345 transitions, 714 flow [2024-11-28 05:14:52,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=714, PETRI_PLACES=345, PETRI_TRANSITIONS=345} [2024-11-28 05:14:52,490 INFO L279 CegarLoopForPetriNet]: 346 programPoint places, -1 predicate places. [2024-11-28 05:14:52,491 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 345 transitions, 714 flow [2024-11-28 05:14:52,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 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) [2024-11-28 05:14:52,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:52,493 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] [2024-11-28 05:14:52,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:14:52,494 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-28 05:14:52,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 205288630, now seen corresponding path program 1 times [2024-11-28 05:14:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569884798] [2024-11-28 05:14:52,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:52,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569884798] [2024-11-28 05:14:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569884798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:52,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:52,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:14:52,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419166117] [2024-11-28 05:14:52,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:52,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:52,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:52,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:14:52,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 365 [2024-11-28 05:14:52,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 345 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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) [2024-11-28 05:14:52,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:52,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 365 [2024-11-28 05:14:52,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:14:53,258 INFO L124 PetriNetUnfolderBase]: 118/1988 cut-off events. [2024-11-28 05:14:53,259 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-28 05:14:53,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 1988 events. 118/1988 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12988 event pairs, 84 based on Foata normal form. 0/1796 useless extension candidates. Maximal degree in co-relation 2222. Up to 213 conditions per place. [2024-11-28 05:14:53,277 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 24 selfloop transitions, 1 changer transitions 0/342 dead transitions. [2024-11-28 05:14:53,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 342 transitions, 758 flow [2024-11-28 05:14:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:14:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2024-11-28 05:14:53,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8995433789954338 [2024-11-28 05:14:53,282 INFO L175 Difference]: Start difference. First operand has 345 places, 345 transitions, 714 flow. Second operand 3 states and 985 transitions. [2024-11-28 05:14:53,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 342 transitions, 758 flow [2024-11-28 05:14:53,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 342 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:14:53,297 INFO L231 Difference]: Finished difference. Result has 342 places, 342 transitions, 706 flow [2024-11-28 05:14:53,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=706, PETRI_PLACES=342, PETRI_TRANSITIONS=342} [2024-11-28 05:14:53,298 INFO L279 CegarLoopForPetriNet]: 346 programPoint places, -4 predicate places. [2024-11-28 05:14:53,298 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 342 transitions, 706 flow [2024-11-28 05:14:53,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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) [2024-11-28 05:14:53,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:53,299 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] [2024-11-28 05:14:53,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:14:53,299 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-28 05:14:53,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash 629287774, now seen corresponding path program 1 times [2024-11-28 05:14:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:53,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518247981] [2024-11-28 05:14:53,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:53,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:54,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:54,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518247981] [2024-11-28 05:14:54,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518247981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:14:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631736934] [2024-11-28 05:14:54,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:54,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:14:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:54,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:14:54,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:14:54,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 365 [2024-11-28 05:14:54,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 342 transitions, 706 flow. Second operand has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 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) [2024-11-28 05:14:54,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:54,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 365 [2024-11-28 05:14:54,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:04,923 INFO L124 PetriNetUnfolderBase]: 23459/62066 cut-off events. [2024-11-28 05:15:04,924 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2024-11-28 05:15:05,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97997 conditions, 62066 events. 23459/62066 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 725627 event pairs, 22570 based on Foata normal form. 0/57845 useless extension candidates. Maximal degree in co-relation 97953. Up to 35743 conditions per place. [2024-11-28 05:15:05,278 INFO L140 encePairwiseOnDemand]: 359/365 looper letters, 87 selfloop transitions, 5 changer transitions 0/341 dead transitions. [2024-11-28 05:15:05,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 341 transitions, 888 flow [2024-11-28 05:15:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:15:05,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:15:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1617 transitions. [2024-11-28 05:15:05,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7383561643835617 [2024-11-28 05:15:05,284 INFO L175 Difference]: Start difference. First operand has 342 places, 342 transitions, 706 flow. Second operand 6 states and 1617 transitions. [2024-11-28 05:15:05,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 341 transitions, 888 flow [2024-11-28 05:15:05,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 341 transitions, 887 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:15:05,302 INFO L231 Difference]: Finished difference. Result has 345 places, 341 transitions, 713 flow [2024-11-28 05:15:05,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=345, PETRI_TRANSITIONS=341} [2024-11-28 05:15:05,304 INFO L279 CegarLoopForPetriNet]: 346 programPoint places, -1 predicate places. [2024-11-28 05:15:05,304 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 341 transitions, 713 flow [2024-11-28 05:15:05,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 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) [2024-11-28 05:15:05,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:05,307 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] [2024-11-28 05:15:05,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:15:05,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-28 05:15:05,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:05,309 INFO L85 PathProgramCache]: Analyzing trace with hash -767176786, now seen corresponding path program 1 times [2024-11-28 05:15:05,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:05,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947112106] [2024-11-28 05:15:05,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:05,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:15:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:05,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947112106] [2024-11-28 05:15:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947112106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:05,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:05,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:15:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688340630] [2024-11-28 05:15:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:05,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:15:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:05,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:15:05,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:15:06,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 365 [2024-11-28 05:15:06,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 341 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 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) [2024-11-28 05:15:06,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:06,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 365 [2024-11-28 05:15:06,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:14,803 INFO L124 PetriNetUnfolderBase]: 23473/62610 cut-off events. [2024-11-28 05:15:14,803 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2024-11-28 05:15:14,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98508 conditions, 62610 events. 23473/62610 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 735885 event pairs, 22570 based on Foata normal form. 0/58352 useless extension candidates. Maximal degree in co-relation 98464. Up to 35705 conditions per place. [2024-11-28 05:15:15,092 INFO L140 encePairwiseOnDemand]: 359/365 looper letters, 87 selfloop transitions, 5 changer transitions 0/340 dead transitions. [2024-11-28 05:15:15,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 340 transitions, 895 flow [2024-11-28 05:15:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:15:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:15:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1617 transitions. [2024-11-28 05:15:15,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7383561643835617 [2024-11-28 05:15:15,101 INFO L175 Difference]: Start difference. First operand has 345 places, 341 transitions, 713 flow. Second operand 6 states and 1617 transitions. [2024-11-28 05:15:15,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 340 transitions, 895 flow [2024-11-28 05:15:15,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 340 transitions, 885 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 05:15:15,112 INFO L231 Difference]: Finished difference. Result has 344 places, 340 transitions, 711 flow [2024-11-28 05:15:15,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=711, PETRI_PLACES=344, PETRI_TRANSITIONS=340} [2024-11-28 05:15:15,115 INFO L279 CegarLoopForPetriNet]: 346 programPoint places, -2 predicate places. [2024-11-28 05:15:15,115 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 340 transitions, 711 flow [2024-11-28 05:15:15,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 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) [2024-11-28 05:15:15,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:15,117 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] [2024-11-28 05:15:15,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:15:15,117 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-28 05:15:15,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:15,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1153554698, now seen corresponding path program 1 times [2024-11-28 05:15:15,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:15,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409559066] [2024-11-28 05:15:15,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:15,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:15:15,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:15,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409559066] [2024-11-28 05:15:15,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409559066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:15,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:15,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:15:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228865367] [2024-11-28 05:15:15,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:15,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:15:15,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:15,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:15:15,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:15:16,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 365 [2024-11-28 05:15:16,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 340 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 249.83333333333334) internal successors, (1499), 6 states have internal predecessors, (1499), 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) [2024-11-28 05:15:16,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:16,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 365 [2024-11-28 05:15:16,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:25,663 INFO L124 PetriNetUnfolderBase]: 27419/72524 cut-off events. [2024-11-28 05:15:25,664 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2024-11-28 05:15:25,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114448 conditions, 72524 events. 27419/72524 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 881810 event pairs, 26131 based on Foata normal form. 0/67523 useless extension candidates. Maximal degree in co-relation 114403. Up to 41583 conditions per place. [2024-11-28 05:15:26,007 INFO L140 encePairwiseOnDemand]: 338/365 looper letters, 107 selfloop transitions, 86 changer transitions 0/433 dead transitions. [2024-11-28 05:15:26,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 433 transitions, 1283 flow [2024-11-28 05:15:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:15:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:15:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1676 transitions. [2024-11-28 05:15:26,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.765296803652968 [2024-11-28 05:15:26,013 INFO L175 Difference]: Start difference. First operand has 344 places, 340 transitions, 711 flow. Second operand 6 states and 1676 transitions. [2024-11-28 05:15:26,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 433 transitions, 1283 flow [2024-11-28 05:15:26,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 433 transitions, 1273 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 05:15:26,035 INFO L231 Difference]: Finished difference. Result has 349 places, 425 transitions, 1267 flow [2024-11-28 05:15:26,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1267, PETRI_PLACES=349, PETRI_TRANSITIONS=425} [2024-11-28 05:15:26,038 INFO L279 CegarLoopForPetriNet]: 346 programPoint places, 3 predicate places. [2024-11-28 05:15:26,040 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 425 transitions, 1267 flow [2024-11-28 05:15:26,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 249.83333333333334) internal successors, (1499), 6 states have internal predecessors, (1499), 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) [2024-11-28 05:15:26,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:26,041 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] [2024-11-28 05:15:26,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:15:26,041 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-28 05:15:26,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 813464778, now seen corresponding path program 1 times [2024-11-28 05:15:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104870642] [2024-11-28 05:15:26,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:15:26,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104870642] [2024-11-28 05:15:26,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104870642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:26,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:26,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:15:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456825964] [2024-11-28 05:15:26,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:26,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:26,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:26,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:26,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:26,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 365 [2024-11-28 05:15:26,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 425 transitions, 1267 flow. Second operand has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2024-11-28 05:15:26,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:26,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 365 [2024-11-28 05:15:26,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:26,975 INFO L124 PetriNetUnfolderBase]: 329/2472 cut-off events. [2024-11-28 05:15:26,975 INFO L125 PetriNetUnfolderBase]: For 211/216 co-relation queries the response was YES. [2024-11-28 05:15:26,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 2472 events. 329/2472 cut-off events. For 211/216 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 17971 event pairs, 114 based on Foata normal form. 1/2278 useless extension candidates. Maximal degree in co-relation 3386. Up to 251 conditions per place. [2024-11-28 05:15:26,993 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 24 selfloop transitions, 3 changer transitions 0/427 dead transitions. [2024-11-28 05:15:26,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 427 transitions, 1325 flow [2024-11-28 05:15:26,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:15:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 996 transitions. [2024-11-28 05:15:26,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9095890410958904 [2024-11-28 05:15:26,997 INFO L175 Difference]: Start difference. First operand has 349 places, 425 transitions, 1267 flow. Second operand 3 states and 996 transitions. [2024-11-28 05:15:26,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 427 transitions, 1325 flow [2024-11-28 05:15:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 427 transitions, 1325 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:15:27,013 INFO L231 Difference]: Finished difference. Result has 352 places, 425 transitions, 1278 flow [2024-11-28 05:15:27,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1278, PETRI_PLACES=352, PETRI_TRANSITIONS=425} [2024-11-28 05:15:27,015 INFO L279 CegarLoopForPetriNet]: 346 programPoint places, 6 predicate places. [2024-11-28 05:15:27,016 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 425 transitions, 1278 flow [2024-11-28 05:15:27,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2024-11-28 05:15:27,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:27,018 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] [2024-11-28 05:15:27,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:15:27,018 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-28 05:15:27,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1545552450, now seen corresponding path program 1 times [2024-11-28 05:15:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:27,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229319053] [2024-11-28 05:15:27,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:27,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:15:27,085 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:15:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:15:27,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:15:27,165 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:15:27,166 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2024-11-28 05:15:27,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2024-11-28 05:15:27,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2024-11-28 05:15:27,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2024-11-28 05:15:27,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2024-11-28 05:15:27,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2024-11-28 05:15:27,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2024-11-28 05:15:27,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2024-11-28 05:15:27,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2024-11-28 05:15:27,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2024-11-28 05:15:27,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2024-11-28 05:15:27,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2024-11-28 05:15:27,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2024-11-28 05:15:27,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2024-11-28 05:15:27,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2024-11-28 05:15:27,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:15:27,176 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:27,180 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:15:27,184 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 05:15:27,366 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-28 05:15:27,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 553 places, 588 transitions, 1220 flow [2024-11-28 05:15:28,249 INFO L124 PetriNetUnfolderBase]: 197/1961 cut-off events. [2024-11-28 05:15:28,249 INFO L125 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2024-11-28 05:15:28,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1961 events. 197/1961 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 13407 event pairs, 2 based on Foata normal form. 0/1655 useless extension candidates. Maximal degree in co-relation 1221. Up to 32 conditions per place. [2024-11-28 05:15:28,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 553 places, 588 transitions, 1220 flow [2024-11-28 05:15:28,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 553 places, 588 transitions, 1220 flow [2024-11-28 05:15:28,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:15:28,331 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;@4d1d85bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:15:28,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2024-11-28 05:15:28,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:15:28,336 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2024-11-28 05:15:28,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:15:28,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:28,337 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] [2024-11-28 05:15:28,337 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2024-11-28 05:15:28,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash 975711686, now seen corresponding path program 1 times [2024-11-28 05:15:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:28,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176715977] [2024-11-28 05:15:28,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:28,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:15:28,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:28,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176715977] [2024-11-28 05:15:28,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176715977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:28,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:28,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:15:28,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591969284] [2024-11-28 05:15:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:28,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:28,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:28,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:28,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:28,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 588 [2024-11-28 05:15:28,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 588 transitions, 1220 flow. Second operand has 3 states, 3 states have (on average 509.3333333333333) internal successors, (1528), 3 states have internal predecessors, (1528), 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) [2024-11-28 05:15:28,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:28,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 588 [2024-11-28 05:15:28,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand