./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU --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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:00:01,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:00:02,027 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:00:02,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:00:02,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:00:02,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:00:02,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:00:02,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:00:02,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:00:02,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:00:02,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:00:02,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:00:02,063 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:00:02,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:00:02,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:00:02,067 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:00:02,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:00:02,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:00:02,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:00:02,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:00:02,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:00:02,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:00:02,073 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:00:02,073 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:00:02,073 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:00:02,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:00:02,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:00:02,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:00:02,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:00:02,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:00:02,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:00:02,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:02,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:00:02,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:00:02,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:00:02,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:00:02,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:00:02,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:00:02,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:00:02,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:00:02,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:00:02,081 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2024-10-31 22:00:02,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:00:02,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:00:02,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:00:02,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:00:02,442 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:00:02,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i Unable to find full path for "g++" [2024-10-31 22:00:04,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:00:04,750 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:00:04,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-10-31 22:00:04,773 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/data/521f49dc9/1005807a1be14cd181f228fee4207529/FLAGc9db98b5b [2024-10-31 22:00:04,996 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/data/521f49dc9/1005807a1be14cd181f228fee4207529 [2024-10-31 22:00:04,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:00:05,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:00:05,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:05,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:00:05,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:00:05,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:04" (1/1) ... [2024-10-31 22:00:05,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ab003d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05, skipping insertion in model container [2024-10-31 22:00:05,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:04" (1/1) ... [2024-10-31 22:00:05,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:00:05,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:05,597 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:00:05,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:05,719 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:00:05,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05 WrapperNode [2024-10-31 22:00:05,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:05,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:05,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:00:05,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:00:05,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,780 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 222 [2024-10-31 22:00:05,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:05,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:00:05,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:00:05,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:00:05,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:00:05,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:00:05,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:00:05,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:00:05,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (1/1) ... [2024-10-31 22:00:05,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:05,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:05,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:00:05,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:00:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:00:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:00:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:00:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:00:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:00:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:00:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:00:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:00:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:00:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:00:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:00:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:00:05,913 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:00:06,118 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:00:06,122 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:00:06,654 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:00:06,655 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:00:06,712 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:00:06,713 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-31 22:00:06,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:06 BoogieIcfgContainer [2024-10-31 22:00:06,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:00:06,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:00:06,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:00:06,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:00:06,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:00:04" (1/3) ... [2024-10-31 22:00:06,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b16465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:06, skipping insertion in model container [2024-10-31 22:00:06,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:05" (2/3) ... [2024-10-31 22:00:06,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b16465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:06, skipping insertion in model container [2024-10-31 22:00:06,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:06" (3/3) ... [2024-10-31 22:00:06,731 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2024-10-31 22:00:06,753 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:00:06,753 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-31 22:00:06,753 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:00:06,849 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:00:06,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 231 transitions, 469 flow [2024-10-31 22:00:07,165 INFO L124 PetriNetUnfolderBase]: 27/341 cut-off events. [2024-10-31 22:00:07,166 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:00:07,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 341 events. 27/341 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 965 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 192. Up to 6 conditions per place. [2024-10-31 22:00:07,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 231 transitions, 469 flow [2024-10-31 22:00:07,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 231 transitions, 469 flow [2024-10-31 22:00:07,207 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:07,215 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;@b96f461, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:07,215 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-31 22:00:07,238 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:00:07,238 INFO L124 PetriNetUnfolderBase]: 2/105 cut-off events. [2024-10-31 22:00:07,238 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:07,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:07,239 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:07,240 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:00:07,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1738818234, now seen corresponding path program 1 times [2024-10-31 22:00:07,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:07,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867896969] [2024-10-31 22:00:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:07,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:08,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867896969] [2024-10-31 22:00:08,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867896969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:08,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:08,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:00:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081813358] [2024-10-31 22:00:08,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:08,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:00:08,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:08,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:00:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:00:09,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2024-10-31 22:00:09,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 231 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 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) [2024-10-31 22:00:09,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:09,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2024-10-31 22:00:09,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:09,803 INFO L124 PetriNetUnfolderBase]: 93/831 cut-off events. [2024-10-31 22:00:09,804 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:00:09,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 831 events. 93/831 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4394 event pairs, 33 based on Foata normal form. 101/872 useless extension candidates. Maximal degree in co-relation 826. Up to 154 conditions per place. [2024-10-31 22:00:09,817 INFO L140 encePairwiseOnDemand]: 212/231 looper letters, 40 selfloop transitions, 5 changer transitions 0/231 dead transitions. [2024-10-31 22:00:09,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 231 transitions, 559 flow [2024-10-31 22:00:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:00:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:00:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1197 transitions. [2024-10-31 22:00:09,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2024-10-31 22:00:09,852 INFO L175 Difference]: Start difference. First operand has 218 places, 231 transitions, 469 flow. Second operand 6 states and 1197 transitions. [2024-10-31 22:00:09,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 231 transitions, 559 flow [2024-10-31 22:00:09,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 231 transitions, 559 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:00:09,864 INFO L231 Difference]: Finished difference. Result has 220 places, 215 transitions, 447 flow [2024-10-31 22:00:09,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=447, PETRI_PLACES=220, PETRI_TRANSITIONS=215} [2024-10-31 22:00:09,870 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 2 predicate places. [2024-10-31 22:00:09,871 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 215 transitions, 447 flow [2024-10-31 22:00:09,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 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) [2024-10-31 22:00:09,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:09,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:09,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:00:09,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:00:09,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash -385128991, now seen corresponding path program 1 times [2024-10-31 22:00:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:09,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538560248] [2024-10-31 22:00:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:10,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:10,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538560248] [2024-10-31 22:00:10,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538560248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:10,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:10,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:10,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054173680] [2024-10-31 22:00:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:10,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:10,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:10,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:10,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 231 [2024-10-31 22:00:10,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 215 transitions, 447 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2024-10-31 22:00:10,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:10,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 231 [2024-10-31 22:00:10,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:10,347 INFO L124 PetriNetUnfolderBase]: 113/976 cut-off events. [2024-10-31 22:00:10,347 INFO L125 PetriNetUnfolderBase]: For 13/19 co-relation queries the response was YES. [2024-10-31 22:00:10,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 976 events. 113/976 cut-off events. For 13/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4857 event pairs, 34 based on Foata normal form. 1/899 useless extension candidates. Maximal degree in co-relation 1029. Up to 137 conditions per place. [2024-10-31 22:00:10,356 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 30 selfloop transitions, 6 changer transitions 0/228 dead transitions. [2024-10-31 22:00:10,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 228 transitions, 548 flow [2024-10-31 22:00:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:00:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2024-10-31 22:00:10,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8961038961038961 [2024-10-31 22:00:10,359 INFO L175 Difference]: Start difference. First operand has 220 places, 215 transitions, 447 flow. Second operand 3 states and 621 transitions. [2024-10-31 22:00:10,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 228 transitions, 548 flow [2024-10-31 22:00:10,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 228 transitions, 538 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:00:10,372 INFO L231 Difference]: Finished difference. Result has 217 places, 217 transitions, 475 flow [2024-10-31 22:00:10,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=217, PETRI_TRANSITIONS=217} [2024-10-31 22:00:10,373 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, -1 predicate places. [2024-10-31 22:00:10,373 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 217 transitions, 475 flow [2024-10-31 22:00:10,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2024-10-31 22:00:10,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:10,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:10,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:00:10,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:00:10,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 442208826, now seen corresponding path program 1 times [2024-10-31 22:00:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:10,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617770035] [2024-10-31 22:00:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:10,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:10,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617770035] [2024-10-31 22:00:10,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617770035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:10,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:10,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:00:10,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570955338] [2024-10-31 22:00:10,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:10,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:10,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:10,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:10,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:10,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 231 [2024-10-31 22:00:10,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 217 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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) [2024-10-31 22:00:10,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:10,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 231 [2024-10-31 22:00:10,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:10,799 INFO L124 PetriNetUnfolderBase]: 86/1080 cut-off events. [2024-10-31 22:00:10,800 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-31 22:00:10,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 1080 events. 86/1080 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5630 event pairs, 10 based on Foata normal form. 1/1010 useless extension candidates. Maximal degree in co-relation 1175. Up to 144 conditions per place. [2024-10-31 22:00:10,808 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 20 selfloop transitions, 2 changer transitions 0/221 dead transitions. [2024-10-31 22:00:10,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 221 transitions, 527 flow [2024-10-31 22:00:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:00:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2024-10-31 22:00:10,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8946608946608947 [2024-10-31 22:00:10,812 INFO L175 Difference]: Start difference. First operand has 217 places, 217 transitions, 475 flow. Second operand 3 states and 620 transitions. [2024-10-31 22:00:10,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 221 transitions, 527 flow [2024-10-31 22:00:10,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 221 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:00:10,819 INFO L231 Difference]: Finished difference. Result has 218 places, 217 transitions, 471 flow [2024-10-31 22:00:10,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=471, PETRI_PLACES=218, PETRI_TRANSITIONS=217} [2024-10-31 22:00:10,821 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 0 predicate places. [2024-10-31 22:00:10,822 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 217 transitions, 471 flow [2024-10-31 22:00:10,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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) [2024-10-31 22:00:10,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:10,824 INFO L204 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] [2024-10-31 22:00:10,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:00:10,824 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:00:10,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:10,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1971312654, now seen corresponding path program 1 times [2024-10-31 22:00:10,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:10,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827317283] [2024-10-31 22:00:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:10,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:00:10,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:00:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:00:10,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:00:10,976 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:00:10,978 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-31 22:00:10,979 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-31 22:00:10,980 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-31 22:00:10,980 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-31 22:00:10,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-31 22:00:10,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-31 22:00:10,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-31 22:00:10,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-31 22:00:10,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-31 22:00:10,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:00:10,983 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 22:00:10,988 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:00:10,988 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:00:11,027 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:00:11,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 263 transitions, 542 flow [2024-10-31 22:00:11,114 INFO L124 PetriNetUnfolderBase]: 45/511 cut-off events. [2024-10-31 22:00:11,115 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:00:11,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 511 events. 45/511 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1846 event pairs, 0 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 343. Up to 9 conditions per place. [2024-10-31 22:00:11,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 263 transitions, 542 flow [2024-10-31 22:00:11,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 263 transitions, 542 flow [2024-10-31 22:00:11,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:11,128 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;@b96f461, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:11,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-31 22:00:11,143 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:00:11,144 INFO L124 PetriNetUnfolderBase]: 2/105 cut-off events. [2024-10-31 22:00:11,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:11,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:11,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:11,144 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:00:11,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1874739962, now seen corresponding path program 1 times [2024-10-31 22:00:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:11,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643835487] [2024-10-31 22:00:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:11,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:11,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:11,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643835487] [2024-10-31 22:00:11,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643835487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:11,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:11,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:00:11,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774507005] [2024-10-31 22:00:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:11,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:00:11,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:00:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:00:11,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 263 [2024-10-31 22:00:11,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 263 transitions, 542 flow. Second operand has 6 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 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) [2024-10-31 22:00:11,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:11,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 263 [2024-10-31 22:00:11,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:13,041 INFO L124 PetriNetUnfolderBase]: 1001/4650 cut-off events. [2024-10-31 22:00:13,041 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-31 22:00:13,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6309 conditions, 4650 events. 1001/4650 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 43045 event pairs, 108 based on Foata normal form. 915/5232 useless extension candidates. Maximal degree in co-relation 1068. Up to 1202 conditions per place. [2024-10-31 22:00:13,075 INFO L140 encePairwiseOnDemand]: 240/263 looper letters, 62 selfloop transitions, 5 changer transitions 0/273 dead transitions. [2024-10-31 22:00:13,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 273 transitions, 696 flow [2024-10-31 22:00:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:00:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:00:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1365 transitions. [2024-10-31 22:00:13,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8650190114068441 [2024-10-31 22:00:13,079 INFO L175 Difference]: Start difference. First operand has 247 places, 263 transitions, 542 flow. Second operand 6 states and 1365 transitions. [2024-10-31 22:00:13,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 273 transitions, 696 flow [2024-10-31 22:00:13,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 273 transitions, 696 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:00:13,085 INFO L231 Difference]: Finished difference. Result has 247 places, 241 transitions, 508 flow [2024-10-31 22:00:13,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=247, PETRI_TRANSITIONS=241} [2024-10-31 22:00:13,087 INFO L277 CegarLoopForPetriNet]: 247 programPoint places, 0 predicate places. [2024-10-31 22:00:13,087 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 241 transitions, 508 flow [2024-10-31 22:00:13,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 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) [2024-10-31 22:00:13,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:13,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:13,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:00:13,089 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:00:13,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1430297539, now seen corresponding path program 1 times [2024-10-31 22:00:13,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:13,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448259336] [2024-10-31 22:00:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:13,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448259336] [2024-10-31 22:00:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448259336] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:13,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:13,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748765419] [2024-10-31 22:00:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:13,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:13,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:13,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 263 [2024-10-31 22:00:13,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 241 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 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) [2024-10-31 22:00:13,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:13,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 263 [2024-10-31 22:00:13,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:15,167 INFO L124 PetriNetUnfolderBase]: 2103/8752 cut-off events. [2024-10-31 22:00:15,168 INFO L125 PetriNetUnfolderBase]: For 271/398 co-relation queries the response was YES. [2024-10-31 22:00:15,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12276 conditions, 8752 events. 2103/8752 cut-off events. For 271/398 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 86428 event pairs, 747 based on Foata normal form. 8/7949 useless extension candidates. Maximal degree in co-relation 10983. Up to 2127 conditions per place. [2024-10-31 22:00:15,225 INFO L140 encePairwiseOnDemand]: 251/263 looper letters, 45 selfloop transitions, 8 changer transitions 0/262 dead transitions. [2024-10-31 22:00:15,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 262 transitions, 667 flow [2024-10-31 22:00:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:00:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2024-10-31 22:00:15,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8783269961977186 [2024-10-31 22:00:15,228 INFO L175 Difference]: Start difference. First operand has 247 places, 241 transitions, 508 flow. Second operand 3 states and 693 transitions. [2024-10-31 22:00:15,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 262 transitions, 667 flow [2024-10-31 22:00:15,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 262 transitions, 657 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:00:15,234 INFO L231 Difference]: Finished difference. Result has 244 places, 245 transitions, 554 flow [2024-10-31 22:00:15,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=244, PETRI_TRANSITIONS=245} [2024-10-31 22:00:15,235 INFO L277 CegarLoopForPetriNet]: 247 programPoint places, -3 predicate places. [2024-10-31 22:00:15,236 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 245 transitions, 554 flow [2024-10-31 22:00:15,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 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) [2024-10-31 22:00:15,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:15,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:15,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:00:15,237 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:00:15,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1512932858, now seen corresponding path program 1 times [2024-10-31 22:00:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:15,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887121253] [2024-10-31 22:00:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:15,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887121253] [2024-10-31 22:00:15,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887121253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:15,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:15,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:00:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688461619] [2024-10-31 22:00:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:15,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:15,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:15,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 263 [2024-10-31 22:00:15,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 245 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2024-10-31 22:00:15,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:15,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 263 [2024-10-31 22:00:15,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:16,972 INFO L124 PetriNetUnfolderBase]: 1320/7689 cut-off events. [2024-10-31 22:00:16,973 INFO L125 PetriNetUnfolderBase]: For 412/458 co-relation queries the response was YES. [2024-10-31 22:00:17,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10499 conditions, 7689 events. 1320/7689 cut-off events. For 412/458 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 78404 event pairs, 566 based on Foata normal form. 1/7029 useless extension candidates. Maximal degree in co-relation 4494. Up to 1811 conditions per place. [2024-10-31 22:00:17,034 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 27 selfloop transitions, 2 changer transitions 0/250 dead transitions. [2024-10-31 22:00:17,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 250 transitions, 622 flow [2024-10-31 22:00:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:00:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2024-10-31 22:00:17,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8745247148288974 [2024-10-31 22:00:17,038 INFO L175 Difference]: Start difference. First operand has 244 places, 245 transitions, 554 flow. Second operand 3 states and 690 transitions. [2024-10-31 22:00:17,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 250 transitions, 622 flow [2024-10-31 22:00:17,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 250 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:00:17,049 INFO L231 Difference]: Finished difference. Result has 245 places, 246 transitions, 550 flow [2024-10-31 22:00:17,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=245, PETRI_TRANSITIONS=246} [2024-10-31 22:00:17,051 INFO L277 CegarLoopForPetriNet]: 247 programPoint places, -2 predicate places. [2024-10-31 22:00:17,052 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 246 transitions, 550 flow [2024-10-31 22:00:17,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2024-10-31 22:00:17,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:17,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:17,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:00:17,054 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:00:17,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash 385168878, now seen corresponding path program 1 times [2024-10-31 22:00:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:17,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111647443] [2024-10-31 22:00:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:17,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111647443] [2024-10-31 22:00:17,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111647443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908382148] [2024-10-31 22:00:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:17,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:17,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:17,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:00:17,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:00:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:17,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:00:17,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:00:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:17,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:00:17,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908382148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:17,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:00:17,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-31 22:00:17,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738160929] [2024-10-31 22:00:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:17,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:00:17,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 263 [2024-10-31 22:00:17,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 246 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2024-10-31 22:00:17,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:17,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 263 [2024-10-31 22:00:17,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:20,170 INFO L124 PetriNetUnfolderBase]: 2343/13241 cut-off events. [2024-10-31 22:00:20,170 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-10-31 22:00:20,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17743 conditions, 13241 events. 2343/13241 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 154891 event pairs, 1363 based on Foata normal form. 36/12154 useless extension candidates. Maximal degree in co-relation 17635. Up to 2189 conditions per place. [2024-10-31 22:00:20,265 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 37 selfloop transitions, 2 changer transitions 0/261 dead transitions. [2024-10-31 22:00:20,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 261 transitions, 658 flow [2024-10-31 22:00:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:00:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2024-10-31 22:00:20,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8871989860583016 [2024-10-31 22:00:20,268 INFO L175 Difference]: Start difference. First operand has 245 places, 246 transitions, 550 flow. Second operand 3 states and 700 transitions. [2024-10-31 22:00:20,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 261 transitions, 658 flow [2024-10-31 22:00:20,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 261 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:00:20,280 INFO L231 Difference]: Finished difference. Result has 247 places, 247 transitions, 560 flow [2024-10-31 22:00:20,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=247, PETRI_TRANSITIONS=247} [2024-10-31 22:00:20,282 INFO L277 CegarLoopForPetriNet]: 247 programPoint places, 0 predicate places. [2024-10-31 22:00:20,283 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 247 transitions, 560 flow [2024-10-31 22:00:20,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2024-10-31 22:00:20,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:20,285 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-31 22:00:20,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:00:20,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79969057-9186-4db6-bc5b-55ad90537f1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:20,485 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:00:20,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1048926782, now seen corresponding path program 1 times [2024-10-31 22:00:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157586061] [2024-10-31 22:00:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:20,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:00:20,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:00:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:00:20,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:00:20,609 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:00:20,609 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-31 22:00:20,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-31 22:00:20,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-31 22:00:20,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-31 22:00:20,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-31 22:00:20,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-31 22:00:20,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-31 22:00:20,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-31 22:00:20,613 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-31 22:00:20,613 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-31 22:00:20,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:00:20,613 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-31 22:00:20,614 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:00:20,614 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:00:20,654 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:00:20,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 295 transitions, 617 flow [2024-10-31 22:00:20,791 INFO L124 PetriNetUnfolderBase]: 68/726 cut-off events. [2024-10-31 22:00:20,792 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-31 22:00:20,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 726 events. 68/726 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2924 event pairs, 1 based on Foata normal form. 0/623 useless extension candidates. Maximal degree in co-relation 519. Up to 16 conditions per place. [2024-10-31 22:00:20,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 295 transitions, 617 flow [2024-10-31 22:00:20,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 295 transitions, 617 flow [2024-10-31 22:00:20,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:20,909 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;@b96f461, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:20,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-31 22:00:20,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:00:20,936 INFO L124 PetriNetUnfolderBase]: 2/105 cut-off events. [2024-10-31 22:00:20,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:20,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:20,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:20,937 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:00:20,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash 394132282, now seen corresponding path program 1 times [2024-10-31 22:00:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576618668] [2024-10-31 22:00:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:20,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:21,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:21,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576618668] [2024-10-31 22:00:21,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576618668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:21,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:21,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:00:21,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941231668] [2024-10-31 22:00:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:21,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:00:21,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:00:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:00:21,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 295 [2024-10-31 22:00:21,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 295 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 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) [2024-10-31 22:00:21,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:21,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 295 [2024-10-31 22:00:21,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:26,295 INFO L124 PetriNetUnfolderBase]: 8120/27179 cut-off events. [2024-10-31 22:00:26,295 INFO L125 PetriNetUnfolderBase]: For 557/557 co-relation queries the response was YES. [2024-10-31 22:00:26,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38914 conditions, 27179 events. 8120/27179 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 327880 event pairs, 710 based on Foata normal form. 6819/32198 useless extension candidates. Maximal degree in co-relation 6339. Up to 8631 conditions per place. [2024-10-31 22:00:26,485 INFO L140 encePairwiseOnDemand]: 268/295 looper letters, 84 selfloop transitions, 5 changer transitions 0/315 dead transitions. [2024-10-31 22:00:26,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 315 transitions, 835 flow [2024-10-31 22:00:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:00:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:00:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1533 transitions. [2024-10-31 22:00:26,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8661016949152542 [2024-10-31 22:00:26,489 INFO L175 Difference]: Start difference. First operand has 276 places, 295 transitions, 617 flow. Second operand 6 states and 1533 transitions. [2024-10-31 22:00:26,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 315 transitions, 835 flow [2024-10-31 22:00:26,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 315 transitions, 835 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:00:26,495 INFO L231 Difference]: Finished difference. Result has 274 places, 267 transitions, 571 flow [2024-10-31 22:00:26,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=571, PETRI_PLACES=274, PETRI_TRANSITIONS=267} [2024-10-31 22:00:26,499 INFO L277 CegarLoopForPetriNet]: 276 programPoint places, -2 predicate places. [2024-10-31 22:00:26,499 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 267 transitions, 571 flow [2024-10-31 22:00:26,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 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) [2024-10-31 22:00:26,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:26,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:26,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:00:26,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:00:26,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:26,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1124076703, now seen corresponding path program 1 times [2024-10-31 22:00:26,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:26,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225764247] [2024-10-31 22:00:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:26,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:26,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:26,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225764247] [2024-10-31 22:00:26,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225764247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:26,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:26,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489679176] [2024-10-31 22:00:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:26,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:26,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 295 [2024-10-31 22:00:26,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 267 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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) [2024-10-31 22:00:26,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:26,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 295 [2024-10-31 22:00:26,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand