/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 20:22:49,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 20:22:49,149 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 20:22:49,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 20:22:49,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 20:22:49,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 20:22:49,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 20:22:49,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 20:22:49,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 20:22:49,188 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 20:22:49,188 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 20:22:49,189 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 20:22:49,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 20:22:49,190 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 20:22:49,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 20:22:49,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 20:22:49,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 20:22:49,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 20:22:49,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 20:22:49,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 20:22:49,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 20:22:49,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 20:22:49,192 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 20:22:49,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 20:22:49,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 20:22:49,193 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 20:22:49,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 20:22:49,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:22:49,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 20:22:49,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 20:22:49,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 20:22:49,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 20:22:49,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 20:22:49,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 20:22:49,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 20:22:49,196 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 20:22:49,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 20:22:49,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 20:22:49,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 20:22:49,491 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 20:22:49,491 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 20:22:49,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2023-08-25 20:22:50,567 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 20:22:50,767 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 20:22:50,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2023-08-25 20:22:50,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b471297e1/20c167f1dd8e45b7be360dd03206bbbc/FLAG2926f0c55 [2023-08-25 20:22:50,793 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b471297e1/20c167f1dd8e45b7be360dd03206bbbc [2023-08-25 20:22:50,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 20:22:50,799 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 20:22:50,801 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 20:22:50,801 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 20:22:50,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 20:22:50,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:22:50" (1/1) ... [2023-08-25 20:22:50,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30db8f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:50, skipping insertion in model container [2023-08-25 20:22:50,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:22:50" (1/1) ... [2023-08-25 20:22:50,838 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 20:22:51,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:22:51,065 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 20:22:51,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:22:51,128 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:22:51,128 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:22:51,134 INFO L206 MainTranslator]: Completed translation [2023-08-25 20:22:51,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51 WrapperNode [2023-08-25 20:22:51,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 20:22:51,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 20:22:51,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 20:22:51,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 20:22:51,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,186 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 273 [2023-08-25 20:22:51,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 20:22:51,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 20:22:51,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 20:22:51,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 20:22:51,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 20:22:51,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 20:22:51,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 20:22:51,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 20:22:51,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (1/1) ... [2023-08-25 20:22:51,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:22:51,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:22:51,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 20:22:51,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 20:22:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 20:22:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 20:22:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 20:22:51,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 20:22:51,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 20:22:51,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 20:22:51,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 20:22:51,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 20:22:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 20:22:51,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 20:22:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-25 20:22:51,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-25 20:22:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 20:22:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-25 20:22:51,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-25 20:22:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 20:22:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 20:22:51,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 20:22:51,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 20:22:51,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 20:22:51,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 20:22:51,313 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 20:22:51,416 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 20:22:51,418 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 20:22:52,014 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 20:22:52,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 20:22:52,376 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-25 20:22:52,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:22:52 BoogieIcfgContainer [2023-08-25 20:22:52,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 20:22:52,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 20:22:52,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 20:22:52,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 20:22:52,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:22:50" (1/3) ... [2023-08-25 20:22:52,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369abfe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:22:52, skipping insertion in model container [2023-08-25 20:22:52,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:22:51" (2/3) ... [2023-08-25 20:22:52,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369abfe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:22:52, skipping insertion in model container [2023-08-25 20:22:52,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:22:52" (3/3) ... [2023-08-25 20:22:52,386 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2023-08-25 20:22:52,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 20:22:52,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-08-25 20:22:52,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 20:22:52,516 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-25 20:22:52,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 298 transitions, 636 flow [2023-08-25 20:22:52,699 INFO L124 PetriNetUnfolderBase]: 14/293 cut-off events. [2023-08-25 20:22:52,699 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-25 20:22:52,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 293 events. 14/293 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 459 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-08-25 20:22:52,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 298 transitions, 636 flow [2023-08-25 20:22:52,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 278 transitions, 586 flow [2023-08-25 20:22:52,723 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 20:22:52,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 278 transitions, 586 flow [2023-08-25 20:22:52,740 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 278 transitions, 586 flow [2023-08-25 20:22:52,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 278 transitions, 586 flow [2023-08-25 20:22:52,842 INFO L124 PetriNetUnfolderBase]: 14/278 cut-off events. [2023-08-25 20:22:52,842 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-25 20:22:52,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 278 events. 14/278 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 455 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-08-25 20:22:52,854 INFO L119 LiptonReduction]: Number of co-enabled transitions 15554 [2023-08-25 20:23:03,855 INFO L134 LiptonReduction]: Checked pairs total: 92550 [2023-08-25 20:23:03,856 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-25 20:23:03,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 20:23:03,885 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@72e9fc80, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 20:23:03,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-08-25 20:23:03,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 20:23:03,886 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 20:23:03,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 20:23:03,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:03,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 20:23:03,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:03,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:03,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1508, now seen corresponding path program 1 times [2023-08-25 20:23:03,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754301199] [2023-08-25 20:23:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:23:03,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:03,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754301199] [2023-08-25 20:23:03,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754301199] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:03,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:03,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 20:23:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91015967] [2023-08-25 20:23:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:03,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 20:23:04,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 20:23:04,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 20:23:04,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 508 [2023-08-25 20:23:04,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 123 transitions, 276 flow. Second operand has 2 states, 2 states have (on average 231.5) internal successors, (463), 2 states have internal predecessors, (463), 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) [2023-08-25 20:23:04,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:04,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 508 [2023-08-25 20:23:04,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:06,088 INFO L124 PetriNetUnfolderBase]: 10118/17978 cut-off events. [2023-08-25 20:23:06,089 INFO L125 PetriNetUnfolderBase]: For 684/684 co-relation queries the response was YES. [2023-08-25 20:23:06,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31520 conditions, 17978 events. 10118/17978 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 146310 event pairs, 6885 based on Foata normal form. 3132/17565 useless extension candidates. Maximal degree in co-relation 27084. Up to 12513 conditions per place. [2023-08-25 20:23:06,253 INFO L140 encePairwiseOnDemand]: 459/508 looper letters, 39 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2023-08-25 20:23:06,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 256 flow [2023-08-25 20:23:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 20:23:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 20:23:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 550 transitions. [2023-08-25 20:23:06,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413385826771654 [2023-08-25 20:23:06,273 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 550 transitions. [2023-08-25 20:23:06,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 550 transitions. [2023-08-25 20:23:06,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:06,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 550 transitions. [2023-08-25 20:23:06,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 275.0) internal successors, (550), 2 states have internal predecessors, (550), 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) [2023-08-25 20:23:06,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 508.0) internal successors, (1524), 3 states have internal predecessors, (1524), 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) [2023-08-25 20:23:06,290 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 508.0) internal successors, (1524), 3 states have internal predecessors, (1524), 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) [2023-08-25 20:23:06,291 INFO L175 Difference]: Start difference. First operand has 130 places, 123 transitions, 276 flow. Second operand 2 states and 550 transitions. [2023-08-25 20:23:06,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 256 flow [2023-08-25 20:23:06,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 236 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-25 20:23:06,386 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 158 flow [2023-08-25 20:23:06,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-08-25 20:23:06,391 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -54 predicate places. [2023-08-25 20:23:06,391 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 158 flow [2023-08-25 20:23:06,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 231.5) internal successors, (463), 2 states have internal predecessors, (463), 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) [2023-08-25 20:23:06,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:06,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:06,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 20:23:06,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:06,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1242092967, now seen corresponding path program 1 times [2023-08-25 20:23:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226519114] [2023-08-25 20:23:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:23:06,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:06,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226519114] [2023-08-25 20:23:06,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226519114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:06,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:06,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:23:06,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044577361] [2023-08-25 20:23:06,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:06,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:23:06,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:06,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:23:06,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:23:06,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 508 [2023-08-25 20:23:06,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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) [2023-08-25 20:23:06,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:06,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 508 [2023-08-25 20:23:06,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:09,502 INFO L124 PetriNetUnfolderBase]: 24842/37894 cut-off events. [2023-08-25 20:23:09,502 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-08-25 20:23:09,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70344 conditions, 37894 events. 24842/37894 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 258897 event pairs, 20306 based on Foata normal form. 0/32038 useless extension candidates. Maximal degree in co-relation 70341. Up to 31324 conditions per place. [2023-08-25 20:23:09,693 INFO L140 encePairwiseOnDemand]: 503/508 looper letters, 43 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-08-25 20:23:09,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 238 flow [2023-08-25 20:23:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:23:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:23:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-08-25 20:23:09,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448818897637795 [2023-08-25 20:23:09,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-08-25 20:23:09,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-08-25 20:23:09,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:09,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-08-25 20:23:09,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2023-08-25 20:23:09,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-08-25 20:23:09,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-08-25 20:23:09,705 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 158 flow. Second operand 3 states and 678 transitions. [2023-08-25 20:23:09,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 238 flow [2023-08-25 20:23:09,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 20:23:09,710 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 152 flow [2023-08-25 20:23:09,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-08-25 20:23:09,713 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -56 predicate places. [2023-08-25 20:23:09,714 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 152 flow [2023-08-25 20:23:09,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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) [2023-08-25 20:23:09,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:09,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:09,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 20:23:09,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:09,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:09,721 INFO L85 PathProgramCache]: Analyzing trace with hash -329033752, now seen corresponding path program 1 times [2023-08-25 20:23:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:09,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350204018] [2023-08-25 20:23:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:09,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:23:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350204018] [2023-08-25 20:23:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350204018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:09,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:23:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145321606] [2023-08-25 20:23:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:09,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:23:09,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:23:09,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:23:09,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 508 [2023-08-25 20:23:09,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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) [2023-08-25 20:23:09,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:09,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 508 [2023-08-25 20:23:09,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:11,255 INFO L124 PetriNetUnfolderBase]: 10118/17235 cut-off events. [2023-08-25 20:23:11,256 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-08-25 20:23:11,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30179 conditions, 17235 events. 10118/17235 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 131861 event pairs, 6885 based on Foata normal form. 0/13700 useless extension candidates. Maximal degree in co-relation 30175. Up to 12513 conditions per place. [2023-08-25 20:23:11,342 INFO L140 encePairwiseOnDemand]: 505/508 looper letters, 38 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-25 20:23:11,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 234 flow [2023-08-25 20:23:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:23:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:23:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2023-08-25 20:23:11,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461942257217848 [2023-08-25 20:23:11,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2023-08-25 20:23:11,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2023-08-25 20:23:11,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:11,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2023-08-25 20:23:11,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2023-08-25 20:23:11,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-08-25 20:23:11,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-08-25 20:23:11,351 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 152 flow. Second operand 3 states and 680 transitions. [2023-08-25 20:23:11,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 234 flow [2023-08-25 20:23:11,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:11,353 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 163 flow [2023-08-25 20:23:11,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2023-08-25 20:23:11,355 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -54 predicate places. [2023-08-25 20:23:11,355 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 163 flow [2023-08-25 20:23:11,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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) [2023-08-25 20:23:11,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:11,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:11,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 20:23:11,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:11,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash 521682768, now seen corresponding path program 1 times [2023-08-25 20:23:11,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:11,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940756296] [2023-08-25 20:23:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:23:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:11,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940756296] [2023-08-25 20:23:11,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940756296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:11,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:11,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:23:11,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291008513] [2023-08-25 20:23:11,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:11,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:23:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:23:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:23:11,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 508 [2023-08-25 20:23:11,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2023-08-25 20:23:11,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:11,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 508 [2023-08-25 20:23:11,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:16,916 INFO L124 PetriNetUnfolderBase]: 51444/65695 cut-off events. [2023-08-25 20:23:16,916 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-08-25 20:23:17,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129049 conditions, 65695 events. 51444/65695 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 361758 event pairs, 17997 based on Foata normal form. 0/51858 useless extension candidates. Maximal degree in co-relation 129044. Up to 39046 conditions per place. [2023-08-25 20:23:17,252 INFO L140 encePairwiseOnDemand]: 500/508 looper letters, 147 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2023-08-25 20:23:17,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 167 transitions, 680 flow [2023-08-25 20:23:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:23:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:23:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1294 transitions. [2023-08-25 20:23:17,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42454068241469817 [2023-08-25 20:23:17,256 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1294 transitions. [2023-08-25 20:23:17,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1294 transitions. [2023-08-25 20:23:17,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:17,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1294 transitions. [2023-08-25 20:23:17,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.66666666666666) internal successors, (1294), 6 states have internal predecessors, (1294), 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) [2023-08-25 20:23:17,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 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) [2023-08-25 20:23:17,267 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 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) [2023-08-25 20:23:17,267 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 163 flow. Second operand 6 states and 1294 transitions. [2023-08-25 20:23:17,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 167 transitions, 680 flow [2023-08-25 20:23:17,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 167 transitions, 676 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:17,271 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 249 flow [2023-08-25 20:23:17,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2023-08-25 20:23:17,272 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -45 predicate places. [2023-08-25 20:23:17,272 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 249 flow [2023-08-25 20:23:17,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2023-08-25 20:23:17,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:17,273 INFO L208 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] [2023-08-25 20:23:17,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 20:23:17,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:17,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash -609703554, now seen corresponding path program 1 times [2023-08-25 20:23:17,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:17,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011364715] [2023-08-25 20:23:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:17,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:23:17,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:17,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011364715] [2023-08-25 20:23:17,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011364715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:17,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:17,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 20:23:17,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577976245] [2023-08-25 20:23:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:17,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 20:23:17,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 20:23:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 20:23:17,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 508 [2023-08-25 20:23:17,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 249 flow. Second operand has 9 states, 9 states have (on average 185.22222222222223) internal successors, (1667), 9 states have internal predecessors, (1667), 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) [2023-08-25 20:23:17,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:17,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 508 [2023-08-25 20:23:17,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:23,273 INFO L124 PetriNetUnfolderBase]: 48504/61579 cut-off events. [2023-08-25 20:23:23,274 INFO L125 PetriNetUnfolderBase]: For 6924/6924 co-relation queries the response was YES. [2023-08-25 20:23:23,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137903 conditions, 61579 events. 48504/61579 cut-off events. For 6924/6924 co-relation queries the response was YES. Maximal size of possible extension queue 2320. Compared 330485 event pairs, 7247 based on Foata normal form. 600/49622 useless extension candidates. Maximal degree in co-relation 137894. Up to 26912 conditions per place. [2023-08-25 20:23:23,843 INFO L140 encePairwiseOnDemand]: 502/508 looper letters, 131 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2023-08-25 20:23:23,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 146 transitions, 667 flow [2023-08-25 20:23:23,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:23:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:23:23,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1408 transitions. [2023-08-25 20:23:23,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39595050618672667 [2023-08-25 20:23:23,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1408 transitions. [2023-08-25 20:23:23,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1408 transitions. [2023-08-25 20:23:23,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:23,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1408 transitions. [2023-08-25 20:23:23,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.14285714285714) internal successors, (1408), 7 states have internal predecessors, (1408), 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) [2023-08-25 20:23:23,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 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) [2023-08-25 20:23:23,859 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 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) [2023-08-25 20:23:23,859 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 249 flow. Second operand 7 states and 1408 transitions. [2023-08-25 20:23:23,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 146 transitions, 667 flow [2023-08-25 20:23:24,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:24,593 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 257 flow [2023-08-25 20:23:24,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-08-25 20:23:24,593 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -41 predicate places. [2023-08-25 20:23:24,594 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 257 flow [2023-08-25 20:23:24,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 185.22222222222223) internal successors, (1667), 9 states have internal predecessors, (1667), 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) [2023-08-25 20:23:24,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:24,595 INFO L208 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] [2023-08-25 20:23:24,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 20:23:24,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:24,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:24,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1658937800, now seen corresponding path program 1 times [2023-08-25 20:23:24,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:24,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896755309] [2023-08-25 20:23:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:24,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:23:24,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896755309] [2023-08-25 20:23:24,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896755309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:24,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:24,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:23:24,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67562522] [2023-08-25 20:23:24,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:24,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:23:24,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:24,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:23:24,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:23:24,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 508 [2023-08-25 20:23:24,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 219.5) internal successors, (878), 4 states have internal predecessors, (878), 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) [2023-08-25 20:23:24,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:24,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 508 [2023-08-25 20:23:24,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:28,948 INFO L124 PetriNetUnfolderBase]: 34698/50867 cut-off events. [2023-08-25 20:23:28,948 INFO L125 PetriNetUnfolderBase]: For 11870/11870 co-relation queries the response was YES. [2023-08-25 20:23:29,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110916 conditions, 50867 events. 34698/50867 cut-off events. For 11870/11870 co-relation queries the response was YES. Maximal size of possible extension queue 1976. Compared 363095 event pairs, 15519 based on Foata normal form. 0/41865 useless extension candidates. Maximal degree in co-relation 110907. Up to 30291 conditions per place. [2023-08-25 20:23:29,269 INFO L140 encePairwiseOnDemand]: 504/508 looper letters, 75 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2023-08-25 20:23:29,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 511 flow [2023-08-25 20:23:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:23:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:23:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 922 transitions. [2023-08-25 20:23:29,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453740157480315 [2023-08-25 20:23:29,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 922 transitions. [2023-08-25 20:23:29,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 922 transitions. [2023-08-25 20:23:29,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:29,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 922 transitions. [2023-08-25 20:23:29,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 230.5) internal successors, (922), 4 states have internal predecessors, (922), 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) [2023-08-25 20:23:29,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 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) [2023-08-25 20:23:29,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 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) [2023-08-25 20:23:29,279 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 257 flow. Second operand 4 states and 922 transitions. [2023-08-25 20:23:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 511 flow [2023-08-25 20:23:29,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 112 transitions, 497 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 20:23:29,570 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 257 flow [2023-08-25 20:23:29,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2023-08-25 20:23:29,571 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -42 predicate places. [2023-08-25 20:23:29,571 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 257 flow [2023-08-25 20:23:29,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.5) internal successors, (878), 4 states have internal predecessors, (878), 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) [2023-08-25 20:23:29,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:29,572 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:23:29,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 20:23:29,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:29,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1339567791, now seen corresponding path program 1 times [2023-08-25 20:23:29,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:29,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523007297] [2023-08-25 20:23:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:29,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:23:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523007297] [2023-08-25 20:23:29,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523007297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:29,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:29,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:23:29,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034822076] [2023-08-25 20:23:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:29,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:23:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:29,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:23:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:23:29,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 508 [2023-08-25 20:23:29,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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) [2023-08-25 20:23:29,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:29,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 508 [2023-08-25 20:23:29,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:37,514 INFO L124 PetriNetUnfolderBase]: 66658/85113 cut-off events. [2023-08-25 20:23:37,514 INFO L125 PetriNetUnfolderBase]: For 18682/18682 co-relation queries the response was YES. [2023-08-25 20:23:37,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198515 conditions, 85113 events. 66658/85113 cut-off events. For 18682/18682 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 479842 event pairs, 36912 based on Foata normal form. 0/70370 useless extension candidates. Maximal degree in co-relation 198505. Up to 73966 conditions per place. [2023-08-25 20:23:37,977 INFO L140 encePairwiseOnDemand]: 500/508 looper letters, 131 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2023-08-25 20:23:37,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 159 transitions, 757 flow [2023-08-25 20:23:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:23:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:23:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1265 transitions. [2023-08-25 20:23:37,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150262467191601 [2023-08-25 20:23:37,980 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1265 transitions. [2023-08-25 20:23:37,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1265 transitions. [2023-08-25 20:23:37,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:37,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1265 transitions. [2023-08-25 20:23:37,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.83333333333334) internal successors, (1265), 6 states have internal predecessors, (1265), 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) [2023-08-25 20:23:37,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 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) [2023-08-25 20:23:37,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 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) [2023-08-25 20:23:37,989 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 257 flow. Second operand 6 states and 1265 transitions. [2023-08-25 20:23:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 159 transitions, 757 flow [2023-08-25 20:23:38,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 159 transitions, 753 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 20:23:38,406 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 435 flow [2023-08-25 20:23:38,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=435, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2023-08-25 20:23:38,407 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -34 predicate places. [2023-08-25 20:23:38,407 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 435 flow [2023-08-25 20:23:38,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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) [2023-08-25 20:23:38,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:38,408 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:23:38,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 20:23:38,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:38,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1628796199, now seen corresponding path program 1 times [2023-08-25 20:23:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:38,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52531413] [2023-08-25 20:23:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:38,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:23:39,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52531413] [2023-08-25 20:23:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52531413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:39,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:39,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 20:23:39,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712672534] [2023-08-25 20:23:39,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:39,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 20:23:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:39,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 20:23:39,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 20:23:39,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 508 [2023-08-25 20:23:39,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 186.55555555555554) internal successors, (1679), 9 states have internal predecessors, (1679), 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) [2023-08-25 20:23:39,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:39,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 508 [2023-08-25 20:23:39,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:46,275 INFO L124 PetriNetUnfolderBase]: 66190/84397 cut-off events. [2023-08-25 20:23:46,275 INFO L125 PetriNetUnfolderBase]: For 26801/26801 co-relation queries the response was YES. [2023-08-25 20:23:46,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205416 conditions, 84397 events. 66190/84397 cut-off events. For 26801/26801 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 473935 event pairs, 35442 based on Foata normal form. 120/70006 useless extension candidates. Maximal degree in co-relation 205402. Up to 68629 conditions per place. [2023-08-25 20:23:46,837 INFO L140 encePairwiseOnDemand]: 502/508 looper letters, 131 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2023-08-25 20:23:46,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 146 transitions, 829 flow [2023-08-25 20:23:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:23:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:23:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1387 transitions. [2023-08-25 20:23:46,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39004499437570306 [2023-08-25 20:23:46,841 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1387 transitions. [2023-08-25 20:23:46,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1387 transitions. [2023-08-25 20:23:46,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:46,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1387 transitions. [2023-08-25 20:23:46,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.14285714285714) internal successors, (1387), 7 states have internal predecessors, (1387), 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) [2023-08-25 20:23:46,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 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) [2023-08-25 20:23:46,849 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 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) [2023-08-25 20:23:46,849 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 435 flow. Second operand 7 states and 1387 transitions. [2023-08-25 20:23:46,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 146 transitions, 829 flow [2023-08-25 20:23:47,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 146 transitions, 823 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:47,406 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 441 flow [2023-08-25 20:23:47,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=100, PETRI_TRANSITIONS=102} [2023-08-25 20:23:47,407 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -30 predicate places. [2023-08-25 20:23:47,407 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 441 flow [2023-08-25 20:23:47,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.55555555555554) internal successors, (1679), 9 states have internal predecessors, (1679), 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) [2023-08-25 20:23:47,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:47,408 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:23:47,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 20:23:47,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:47,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:47,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1309722303, now seen corresponding path program 1 times [2023-08-25 20:23:47,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:47,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467310938] [2023-08-25 20:23:47,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:47,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:23:47,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:47,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467310938] [2023-08-25 20:23:47,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467310938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:47,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:47,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:23:47,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446644523] [2023-08-25 20:23:47,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:47,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:23:47,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:23:47,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:23:47,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 508 [2023-08-25 20:23:47,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 441 flow. Second operand has 4 states, 4 states have (on average 221.25) internal successors, (885), 4 states have internal predecessors, (885), 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) [2023-08-25 20:23:47,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:47,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 508 [2023-08-25 20:23:47,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:53,854 INFO L124 PetriNetUnfolderBase]: 46824/71204 cut-off events. [2023-08-25 20:23:53,854 INFO L125 PetriNetUnfolderBase]: For 35620/35620 co-relation queries the response was YES. [2023-08-25 20:23:54,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165931 conditions, 71204 events. 46824/71204 cut-off events. For 35620/35620 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 557520 event pairs, 22750 based on Foata normal form. 2066/63041 useless extension candidates. Maximal degree in co-relation 165917. Up to 44514 conditions per place. [2023-08-25 20:23:54,428 INFO L140 encePairwiseOnDemand]: 504/508 looper letters, 109 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2023-08-25 20:23:54,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 149 transitions, 913 flow [2023-08-25 20:23:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:23:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:23:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 922 transitions. [2023-08-25 20:23:54,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453740157480315 [2023-08-25 20:23:54,430 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 922 transitions. [2023-08-25 20:23:54,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 922 transitions. [2023-08-25 20:23:54,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:54,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 922 transitions. [2023-08-25 20:23:54,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 230.5) internal successors, (922), 4 states have internal predecessors, (922), 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) [2023-08-25 20:23:54,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 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) [2023-08-25 20:23:54,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 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) [2023-08-25 20:23:54,436 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 441 flow. Second operand 4 states and 922 transitions. [2023-08-25 20:23:54,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 149 transitions, 913 flow [2023-08-25 20:23:54,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 149 transitions, 899 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 20:23:54,924 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 441 flow [2023-08-25 20:23:54,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=441, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2023-08-25 20:23:54,925 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -31 predicate places. [2023-08-25 20:23:54,925 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 441 flow [2023-08-25 20:23:54,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.25) internal successors, (885), 4 states have internal predecessors, (885), 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) [2023-08-25 20:23:54,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:54,926 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:23:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 20:23:54,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:23:54,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1879494992, now seen corresponding path program 1 times [2023-08-25 20:23:54,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:54,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168791025] [2023-08-25 20:23:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:23:55,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:55,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168791025] [2023-08-25 20:23:55,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168791025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:55,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:55,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:23:55,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251573130] [2023-08-25 20:23:55,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:55,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:23:55,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:55,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:23:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:23:55,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 508 [2023-08-25 20:23:55,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 195.83333333333334) internal successors, (1175), 6 states have internal predecessors, (1175), 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) [2023-08-25 20:23:55,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:55,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 508 [2023-08-25 20:23:55,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:24:05,010 INFO L124 PetriNetUnfolderBase]: 82444/105217 cut-off events. [2023-08-25 20:24:05,010 INFO L125 PetriNetUnfolderBase]: For 53441/53441 co-relation queries the response was YES. [2023-08-25 20:24:05,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273155 conditions, 105217 events. 82444/105217 cut-off events. For 53441/53441 co-relation queries the response was YES. Maximal size of possible extension queue 3336. Compared 608885 event pairs, 50368 based on Foata normal form. 0/87243 useless extension candidates. Maximal degree in co-relation 273140. Up to 98817 conditions per place. [2023-08-25 20:24:05,763 INFO L140 encePairwiseOnDemand]: 500/508 looper letters, 127 selfloop transitions, 29 changer transitions 0/163 dead transitions. [2023-08-25 20:24:05,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 163 transitions, 996 flow [2023-08-25 20:24:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:24:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:24:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1240 transitions. [2023-08-25 20:24:05,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068241469816273 [2023-08-25 20:24:05,765 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1240 transitions. [2023-08-25 20:24:05,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1240 transitions. [2023-08-25 20:24:05,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:24:05,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1240 transitions. [2023-08-25 20:24:05,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.66666666666666) internal successors, (1240), 6 states have internal predecessors, (1240), 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) [2023-08-25 20:24:05,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 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) [2023-08-25 20:24:05,772 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 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) [2023-08-25 20:24:05,772 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 441 flow. Second operand 6 states and 1240 transitions. [2023-08-25 20:24:05,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 163 transitions, 996 flow [2023-08-25 20:24:06,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 992 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 20:24:06,503 INFO L231 Difference]: Finished difference. Result has 107 places, 131 transitions, 751 flow [2023-08-25 20:24:06,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=751, PETRI_PLACES=107, PETRI_TRANSITIONS=131} [2023-08-25 20:24:06,504 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -23 predicate places. [2023-08-25 20:24:06,504 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 131 transitions, 751 flow [2023-08-25 20:24:06,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.83333333333334) internal successors, (1175), 6 states have internal predecessors, (1175), 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) [2023-08-25 20:24:06,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:24:06,505 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:24:06,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 20:24:06,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:24:06,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:24:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash -612104432, now seen corresponding path program 1 times [2023-08-25 20:24:06,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:24:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929522758] [2023-08-25 20:24:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:24:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:24:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:24:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:24:07,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:24:07,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929522758] [2023-08-25 20:24:07,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929522758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:24:07,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:24:07,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 20:24:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488661228] [2023-08-25 20:24:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:24:07,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 20:24:07,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:24:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 20:24:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 20:24:07,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 508 [2023-08-25 20:24:07,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 131 transitions, 751 flow. Second operand has 9 states, 9 states have (on average 187.77777777777777) internal successors, (1690), 9 states have internal predecessors, (1690), 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) [2023-08-25 20:24:07,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:24:07,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 508 [2023-08-25 20:24:07,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:24:16,878 INFO L124 PetriNetUnfolderBase]: 82357/105084 cut-off events. [2023-08-25 20:24:16,878 INFO L125 PetriNetUnfolderBase]: For 60985/60985 co-relation queries the response was YES. [2023-08-25 20:24:17,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276546 conditions, 105084 events. 82357/105084 cut-off events. For 60985/60985 co-relation queries the response was YES. Maximal size of possible extension queue 3336. Compared 607919 event pairs, 50104 based on Foata normal form. 30/87198 useless extension candidates. Maximal degree in co-relation 276527. Up to 97702 conditions per place. [2023-08-25 20:24:17,729 INFO L140 encePairwiseOnDemand]: 502/508 looper letters, 143 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2023-08-25 20:24:17,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 158 transitions, 1153 flow [2023-08-25 20:24:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:24:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:24:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1370 transitions. [2023-08-25 20:24:17,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38526434195725534 [2023-08-25 20:24:17,732 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1370 transitions. [2023-08-25 20:24:17,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1370 transitions. [2023-08-25 20:24:17,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:24:17,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1370 transitions. [2023-08-25 20:24:17,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.71428571428572) internal successors, (1370), 7 states have internal predecessors, (1370), 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) [2023-08-25 20:24:17,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 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) [2023-08-25 20:24:17,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 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) [2023-08-25 20:24:17,739 INFO L175 Difference]: Start difference. First operand has 107 places, 131 transitions, 751 flow. Second operand 7 states and 1370 transitions. [2023-08-25 20:24:17,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 158 transitions, 1153 flow [2023-08-25 20:24:19,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 158 transitions, 1145 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:24:19,052 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 755 flow [2023-08-25 20:24:19,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=755, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2023-08-25 20:24:19,053 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -19 predicate places. [2023-08-25 20:24:19,053 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 755 flow [2023-08-25 20:24:19,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 187.77777777777777) internal successors, (1690), 9 states have internal predecessors, (1690), 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) [2023-08-25 20:24:19,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:24:19,053 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:24:19,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 20:24:19,054 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:24:19,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:24:19,054 INFO L85 PathProgramCache]: Analyzing trace with hash 260556989, now seen corresponding path program 1 times [2023-08-25 20:24:19,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:24:19,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638870864] [2023-08-25 20:24:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:24:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:24:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:24:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:24:19,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:24:19,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638870864] [2023-08-25 20:24:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638870864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:24:19,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:24:19,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:24:19,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937949495] [2023-08-25 20:24:19,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:24:19,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:24:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:24:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:24:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:24:19,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 508 [2023-08-25 20:24:19,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 755 flow. Second operand has 4 states, 4 states have (on average 222.5) internal successors, (890), 4 states have internal predecessors, (890), 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) [2023-08-25 20:24:19,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:24:19,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 508 [2023-08-25 20:24:19,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:24:28,564 INFO L124 PetriNetUnfolderBase]: 64911/94284 cut-off events. [2023-08-25 20:24:28,564 INFO L125 PetriNetUnfolderBase]: For 95601/97821 co-relation queries the response was YES. [2023-08-25 20:24:29,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253440 conditions, 94284 events. 64911/94284 cut-off events. For 95601/97821 co-relation queries the response was YES. Maximal size of possible extension queue 3330. Compared 706206 event pairs, 28890 based on Foata normal form. 1110/85347 useless extension candidates. Maximal degree in co-relation 253421. Up to 55317 conditions per place. [2023-08-25 20:24:29,489 INFO L140 encePairwiseOnDemand]: 504/508 looper letters, 138 selfloop transitions, 27 changer transitions 0/204 dead transitions. [2023-08-25 20:24:29,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 204 transitions, 1617 flow [2023-08-25 20:24:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:24:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:24:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 925 transitions. [2023-08-25 20:24:29,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552165354330709 [2023-08-25 20:24:29,491 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 925 transitions. [2023-08-25 20:24:29,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 925 transitions. [2023-08-25 20:24:29,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:24:29,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 925 transitions. [2023-08-25 20:24:29,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 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) [2023-08-25 20:24:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 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) [2023-08-25 20:24:29,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 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) [2023-08-25 20:24:29,496 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 755 flow. Second operand 4 states and 925 transitions. [2023-08-25 20:24:29,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 204 transitions, 1617 flow [2023-08-25 20:24:30,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 204 transitions, 1603 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 20:24:30,582 INFO L231 Difference]: Finished difference. Result has 110 places, 155 transitions, 1105 flow [2023-08-25 20:24:30,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1105, PETRI_PLACES=110, PETRI_TRANSITIONS=155} [2023-08-25 20:24:30,583 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -20 predicate places. [2023-08-25 20:24:30,583 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 155 transitions, 1105 flow [2023-08-25 20:24:30,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.5) internal successors, (890), 4 states have internal predecessors, (890), 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) [2023-08-25 20:24:30,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:24:30,584 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:24:30,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 20:24:30,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:24:30,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:24:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1705277847, now seen corresponding path program 1 times [2023-08-25 20:24:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:24:30,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208445933] [2023-08-25 20:24:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:24:30,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:24:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:24:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:24:30,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:24:30,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208445933] [2023-08-25 20:24:30,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208445933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:24:30,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:24:30,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:24:30,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678248929] [2023-08-25 20:24:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:24:30,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:24:30,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:24:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:24:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:24:30,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 508 [2023-08-25 20:24:30,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 155 transitions, 1105 flow. Second operand has 6 states, 6 states have (on average 197.5) internal successors, (1185), 6 states have internal predecessors, (1185), 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) [2023-08-25 20:24:30,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:24:30,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 508 [2023-08-25 20:24:30,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:24:43,128 INFO L124 PetriNetUnfolderBase]: 96094/123666 cut-off events. [2023-08-25 20:24:43,129 INFO L125 PetriNetUnfolderBase]: For 117650/121715 co-relation queries the response was YES. [2023-08-25 20:24:43,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355477 conditions, 123666 events. 96094/123666 cut-off events. For 117650/121715 co-relation queries the response was YES. Maximal size of possible extension queue 4006. Compared 751067 event pairs, 64837 based on Foata normal form. 4065/116877 useless extension candidates. Maximal degree in co-relation 355457. Up to 118338 conditions per place. [2023-08-25 20:24:44,065 INFO L140 encePairwiseOnDemand]: 501/508 looper letters, 163 selfloop transitions, 21 changer transitions 0/191 dead transitions. [2023-08-25 20:24:44,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 191 transitions, 1667 flow [2023-08-25 20:24:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:24:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:24:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1219 transitions. [2023-08-25 20:24:44,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39993438320209973 [2023-08-25 20:24:44,067 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1219 transitions. [2023-08-25 20:24:44,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1219 transitions. [2023-08-25 20:24:44,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:24:44,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1219 transitions. [2023-08-25 20:24:44,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.16666666666666) internal successors, (1219), 6 states have internal predecessors, (1219), 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) [2023-08-25 20:24:44,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 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) [2023-08-25 20:24:44,073 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 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) [2023-08-25 20:24:44,073 INFO L175 Difference]: Start difference. First operand has 110 places, 155 transitions, 1105 flow. Second operand 6 states and 1219 transitions. [2023-08-25 20:24:44,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 191 transitions, 1667 flow [2023-08-25 20:24:45,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 191 transitions, 1639 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 20:24:45,456 INFO L231 Difference]: Finished difference. Result has 118 places, 175 transitions, 1339 flow [2023-08-25 20:24:45,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1339, PETRI_PLACES=118, PETRI_TRANSITIONS=175} [2023-08-25 20:24:45,457 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -12 predicate places. [2023-08-25 20:24:45,457 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 175 transitions, 1339 flow [2023-08-25 20:24:45,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 197.5) internal successors, (1185), 6 states have internal predecessors, (1185), 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) [2023-08-25 20:24:45,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:24:45,458 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:24:45,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 20:24:45,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:24:45,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:24:45,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1670656410, now seen corresponding path program 1 times [2023-08-25 20:24:45,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:24:45,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483955996] [2023-08-25 20:24:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:24:45,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:24:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:24:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:24:46,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:24:46,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483955996] [2023-08-25 20:24:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483955996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:24:46,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:24:46,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 20:24:46,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296023663] [2023-08-25 20:24:46,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:24:46,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 20:24:46,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:24:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 20:24:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 20:24:46,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 508 [2023-08-25 20:24:46,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 175 transitions, 1339 flow. Second operand has 9 states, 9 states have (on average 188.88888888888889) internal successors, (1700), 9 states have internal predecessors, (1700), 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) [2023-08-25 20:24:46,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:24:46,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 508 [2023-08-25 20:24:46,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:24:58,830 INFO L124 PetriNetUnfolderBase]: 96085/123546 cut-off events. [2023-08-25 20:24:58,830 INFO L125 PetriNetUnfolderBase]: For 130042/134127 co-relation queries the response was YES. [2023-08-25 20:24:59,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354908 conditions, 123546 events. 96085/123546 cut-off events. For 130042/134127 co-relation queries the response was YES. Maximal size of possible extension queue 4002. Compared 749468 event pairs, 64813 based on Foata normal form. 4091/116811 useless extension candidates. Maximal degree in co-relation 354884. Up to 118211 conditions per place. [2023-08-25 20:25:00,088 INFO L140 encePairwiseOnDemand]: 502/508 looper letters, 175 selfloop transitions, 8 changer transitions 0/190 dead transitions. [2023-08-25 20:25:00,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 190 transitions, 1765 flow [2023-08-25 20:25:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:25:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:25:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1357 transitions. [2023-08-25 20:25:00,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3816085489313836 [2023-08-25 20:25:00,092 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1357 transitions. [2023-08-25 20:25:00,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1357 transitions. [2023-08-25 20:25:00,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:25:00,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1357 transitions. [2023-08-25 20:25:00,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 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) [2023-08-25 20:25:00,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 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) [2023-08-25 20:25:00,098 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 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) [2023-08-25 20:25:00,098 INFO L175 Difference]: Start difference. First operand has 118 places, 175 transitions, 1339 flow. Second operand 7 states and 1357 transitions. [2023-08-25 20:25:00,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 190 transitions, 1765 flow [2023-08-25 20:25:02,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 1759 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:25:02,053 INFO L231 Difference]: Finished difference. Result has 122 places, 174 transitions, 1345 flow [2023-08-25 20:25:02,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1345, PETRI_PLACES=122, PETRI_TRANSITIONS=174} [2023-08-25 20:25:02,053 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -8 predicate places. [2023-08-25 20:25:02,053 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 174 transitions, 1345 flow [2023-08-25 20:25:02,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 188.88888888888889) internal successors, (1700), 9 states have internal predecessors, (1700), 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) [2023-08-25 20:25:02,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:25:02,054 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-25 20:25:02,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 20:25:02,054 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:25:02,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:25:02,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1489054445, now seen corresponding path program 1 times [2023-08-25 20:25:02,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:25:02,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511869148] [2023-08-25 20:25:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:25:02,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:25:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:25:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:25:02,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:25:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511869148] [2023-08-25 20:25:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511869148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:25:02,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:25:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:25:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747826120] [2023-08-25 20:25:02,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:25:02,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:25:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:25:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:25:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:25:02,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 508 [2023-08-25 20:25:02,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 174 transitions, 1345 flow. Second operand has 4 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:25:02,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:25:02,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 508 [2023-08-25 20:25:02,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:25:14,911 INFO L124 PetriNetUnfolderBase]: 76161/109524 cut-off events. [2023-08-25 20:25:14,912 INFO L125 PetriNetUnfolderBase]: For 207689/213187 co-relation queries the response was YES. [2023-08-25 20:25:15,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331805 conditions, 109524 events. 76161/109524 cut-off events. For 207689/213187 co-relation queries the response was YES. Maximal size of possible extension queue 3592. Compared 817765 event pairs, 36754 based on Foata normal form. 4118/109450 useless extension candidates. Maximal degree in co-relation 331781. Up to 67552 conditions per place. [2023-08-25 20:25:16,097 INFO L140 encePairwiseOnDemand]: 504/508 looper letters, 192 selfloop transitions, 43 changer transitions 0/277 dead transitions. [2023-08-25 20:25:16,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 277 transitions, 2762 flow [2023-08-25 20:25:16,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:25:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:25:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 925 transitions. [2023-08-25 20:25:16,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552165354330709 [2023-08-25 20:25:16,099 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 925 transitions. [2023-08-25 20:25:16,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 925 transitions. [2023-08-25 20:25:16,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:25:16,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 925 transitions. [2023-08-25 20:25:16,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 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) [2023-08-25 20:25:16,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 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) [2023-08-25 20:25:16,102 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 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) [2023-08-25 20:25:16,102 INFO L175 Difference]: Start difference. First operand has 122 places, 174 transitions, 1345 flow. Second operand 4 states and 925 transitions. [2023-08-25 20:25:16,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 277 transitions, 2762 flow [2023-08-25 20:25:18,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 277 transitions, 2748 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 20:25:18,636 INFO L231 Difference]: Finished difference. Result has 121 places, 215 transitions, 1995 flow [2023-08-25 20:25:18,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1995, PETRI_PLACES=121, PETRI_TRANSITIONS=215} [2023-08-25 20:25:18,637 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -9 predicate places. [2023-08-25 20:25:18,637 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 215 transitions, 1995 flow [2023-08-25 20:25:18,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:25:18,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:25:18,637 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:25:18,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 20:25:18,637 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 97 more)] === [2023-08-25 20:25:18,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:25:18,638 INFO L85 PathProgramCache]: Analyzing trace with hash -709991985, now seen corresponding path program 1 times [2023-08-25 20:25:18,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:25:18,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428209403] [2023-08-25 20:25:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:25:18,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:25:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:25:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:25:19,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:25:19,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428209403] [2023-08-25 20:25:19,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428209403] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:25:19,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073912171] [2023-08-25 20:25:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:25:19,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:25:19,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:25:19,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:25:19,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 20:25:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:25:19,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-25 20:25:19,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:25:20,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 20:25:20,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:25:20,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:25:20,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-25 20:25:20,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:25:20,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-25 20:25:20,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:25:20,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 20:25:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:25:20,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:25:20,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-08-25 20:25:21,084 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:25:21,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 79 [2023-08-25 20:25:21,143 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:25:21,144 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:25:21,630 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset)) (.cse1 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_1579 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1579) c_~A~0.base))) (let ((.cse2 (select .cse0 c_~A~0.offset))) (or (<= (select .cse0 .cse1) c_~min~0) (< c_~min~0 (+ 3 .cse2)) (< .cse3 (+ .cse2 1)) (< 2147483645 .cse2))))) (forall ((v_ArrVal_1579 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1579) c_~A~0.base))) (let ((.cse4 (select .cse6 .cse1)) (.cse5 (select .cse6 c_~A~0.offset))) (or (< c_~min~0 .cse4) (< .cse4 (+ 3 .cse5)) (< .cse3 (+ .cse5 1)) (< 2147483645 .cse5))))) (forall ((v_ArrVal_1579 (Array Int Int))) (let ((.cse8 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1579) c_~A~0.base))) (let ((.cse7 (select .cse8 c_~A~0.offset))) (or (<= c_~min~0 (+ .cse7 1)) (<= (select .cse8 .cse1) c_~min~0) (<= 2147483647 .cse7))))) (forall ((v_ArrVal_1579 (Array Int Int))) (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1579) c_~A~0.base))) (let ((.cse9 (select .cse11 .cse1)) (.cse10 (select .cse11 c_~A~0.offset))) (or (< c_~min~0 .cse9) (<= .cse9 (+ .cse10 1)) (<= 2147483647 .cse10))))))) is different from false [2023-08-25 20:25:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-08-25 20:25:21,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073912171] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:25:21,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:25:21,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 8] total 27 [2023-08-25 20:25:21,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213869762] [2023-08-25 20:25:21,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:25:21,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 20:25:21,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:25:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 20:25:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=593, Unknown=3, NotChecked=50, Total=756 [2023-08-25 20:25:21,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 508 [2023-08-25 20:25:21,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 215 transitions, 1995 flow. Second operand has 28 states, 28 states have (on average 162.78571428571428) internal successors, (4558), 28 states have internal predecessors, (4558), 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) [2023-08-25 20:25:21,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:25:21,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 508 [2023-08-25 20:25:21,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand