/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-more-max-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 20:38:40,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 20:38:40,135 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 20:38:40,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 20:38:40,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 20:38:40,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 20:38:40,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 20:38:40,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 20:38:40,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 20:38:40,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 20:38:40,180 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 20:38:40,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 20:38:40,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 20:38:40,181 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 20:38:40,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 20:38:40,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 20:38:40,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 20:38:40,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 20:38:40,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 20:38:40,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 20:38:40,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 20:38:40,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 20:38:40,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 20:38:40,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 20:38:40,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 20:38:40,185 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 20:38:40,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 20:38:40,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:38:40,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 20:38:40,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 20:38:40,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 20:38:40,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 20:38:40,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 20:38:40,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 20:38:40,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 20:38:40,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 20:38:40,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 20:38:40,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 20:38:40,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 20:38:40,504 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 20:38:40,505 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 20:38:40,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-08-25 20:38:41,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 20:38:42,026 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 20:38:42,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-08-25 20:38:42,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e1fe4f4/8a235c7eb7bc432693fa36a66334056d/FLAGd9721cc41 [2023-08-25 20:38:42,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e1fe4f4/8a235c7eb7bc432693fa36a66334056d [2023-08-25 20:38:42,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 20:38:42,046 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 20:38:42,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 20:38:42,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 20:38:42,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 20:38:42,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f82fbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42, skipping insertion in model container [2023-08-25 20:38:42,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,070 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 20:38:42,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:38:42,287 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 20:38:42,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:38:42,342 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:38:42,343 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:38:42,349 INFO L206 MainTranslator]: Completed translation [2023-08-25 20:38:42,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42 WrapperNode [2023-08-25 20:38:42,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 20:38:42,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 20:38:42,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 20:38:42,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 20:38:42,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,413 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 168 [2023-08-25 20:38:42,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 20:38:42,414 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 20:38:42,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 20:38:42,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 20:38:42,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 20:38:42,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 20:38:42,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 20:38:42,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 20:38:42,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (1/1) ... [2023-08-25 20:38:42,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:38:42,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:38:42,497 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 20:38:42,508 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 20:38:42,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 20:38:42,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 20:38:42,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 20:38:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 20:38:42,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 20:38:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 20:38:42,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 20:38:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 20:38:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 20:38:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 20:38:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 20:38:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 20:38:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 20:38:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 20:38:42,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 20:38:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 20:38:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 20:38:42,540 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 20:38:42,638 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 20:38:42,639 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 20:38:43,191 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 20:38:43,339 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 20:38:43,339 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-25 20:38:43,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:38:43 BoogieIcfgContainer [2023-08-25 20:38:43,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 20:38:43,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 20:38:43,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 20:38:43,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 20:38:43,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:38:42" (1/3) ... [2023-08-25 20:38:43,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f77ea1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:38:43, skipping insertion in model container [2023-08-25 20:38:43,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:38:42" (2/3) ... [2023-08-25 20:38:43,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f77ea1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:38:43, skipping insertion in model container [2023-08-25 20:38:43,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:38:43" (3/3) ... [2023-08-25 20:38:43,348 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2023-08-25 20:38:43,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 20:38:43,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-08-25 20:38:43,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 20:38:43,420 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 20:38:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 258 transitions, 540 flow [2023-08-25 20:38:43,520 INFO L124 PetriNetUnfolderBase]: 14/255 cut-off events. [2023-08-25 20:38:43,520 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 20:38:43,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 255 events. 14/255 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 310 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-08-25 20:38:43,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 258 transitions, 540 flow [2023-08-25 20:38:43,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 244 transitions, 506 flow [2023-08-25 20:38:43,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 20:38:43,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 244 transitions, 506 flow [2023-08-25 20:38:43,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 244 transitions, 506 flow [2023-08-25 20:38:43,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 244 transitions, 506 flow [2023-08-25 20:38:43,606 INFO L124 PetriNetUnfolderBase]: 14/244 cut-off events. [2023-08-25 20:38:43,606 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 20:38:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 244 events. 14/244 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 317 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-08-25 20:38:43,612 INFO L119 LiptonReduction]: Number of co-enabled transitions 5682 [2023-08-25 20:38:53,487 INFO L134 LiptonReduction]: Checked pairs total: 35801 [2023-08-25 20:38:53,488 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-08-25 20:38:53,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 20:38:53,514 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;@20e57b5c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 20:38:53,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-08-25 20:38:53,515 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 20:38:53,515 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 20:38:53,515 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 20:38:53,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:53,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 20:38:53,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:53,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1123, now seen corresponding path program 1 times [2023-08-25 20:38:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:53,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263694026] [2023-08-25 20:38:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:53,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:53,600 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 20:38:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:53,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263694026] [2023-08-25 20:38:53,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263694026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:38:53,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:38:53,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 20:38:53,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093532671] [2023-08-25 20:38:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:53,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 20:38:53,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 20:38:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 20:38:53,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 504 [2023-08-25 20:38:53,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 222.5) internal successors, (445), 2 states have internal predecessors, (445), 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 20:38:53,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:53,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 504 [2023-08-25 20:38:53,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:53,785 INFO L124 PetriNetUnfolderBase]: 333/800 cut-off events. [2023-08-25 20:38:53,785 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-25 20:38:53,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 800 events. 333/800 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4765 event pairs, 176 based on Foata normal form. 152/765 useless extension candidates. Maximal degree in co-relation 1077. Up to 462 conditions per place. [2023-08-25 20:38:53,794 INFO L140 encePairwiseOnDemand]: 470/504 looper letters, 23 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2023-08-25 20:38:53,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 164 flow [2023-08-25 20:38:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 20:38:53,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 20:38:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2023-08-25 20:38:53,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2023-08-25 20:38:53,807 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2023-08-25 20:38:53,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2023-08-25 20:38:53,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:53,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2023-08-25 20:38:53,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 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 20:38:53,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 504.0) internal successors, (1512), 3 states have internal predecessors, (1512), 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 20:38:53,819 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 504.0) internal successors, (1512), 3 states have internal predecessors, (1512), 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 20:38:53,821 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 186 flow. Second operand 2 states and 501 transitions. [2023-08-25 20:38:53,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 164 flow [2023-08-25 20:38:53,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 152 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 20:38:53,825 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 106 flow [2023-08-25 20:38:53,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-25 20:38:53,829 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -36 predicate places. [2023-08-25 20:38:53,830 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 106 flow [2023-08-25 20:38:53,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 222.5) internal successors, (445), 2 states have internal predecessors, (445), 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 20:38:53,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:53,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 20:38:53,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 20:38:53,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:53,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash -934467705, now seen corresponding path program 1 times [2023-08-25 20:38:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:53,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846063033] [2023-08-25 20:38:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:53,933 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 20:38:53,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:53,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846063033] [2023-08-25 20:38:53,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846063033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:38:53,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:38:53,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:38:53,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692075797] [2023-08-25 20:38:53,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:53,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:38:53,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:53,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:38:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:38:53,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 504 [2023-08-25 20:38:53,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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 20:38:53,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:53,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 504 [2023-08-25 20:38:53,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:54,106 INFO L124 PetriNetUnfolderBase]: 579/1111 cut-off events. [2023-08-25 20:38:54,107 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-25 20:38:54,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 1111 events. 579/1111 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6108 event pairs, 364 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1942. Up to 810 conditions per place. [2023-08-25 20:38:54,114 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 25 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-25 20:38:54,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 154 flow [2023-08-25 20:38:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:38:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:38:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-25 20:38:54,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42923280423280424 [2023-08-25 20:38:54,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-25 20:38:54,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-25 20:38:54,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:54,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-25 20:38:54,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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 20:38:54,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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 20:38:54,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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 20:38:54,125 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 106 flow. Second operand 3 states and 649 transitions. [2023-08-25 20:38:54,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 154 flow [2023-08-25 20:38:54,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 20:38:54,127 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 104 flow [2023-08-25 20:38:54,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-25 20:38:54,128 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -36 predicate places. [2023-08-25 20:38:54,128 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 104 flow [2023-08-25 20:38:54,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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 20:38:54,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:54,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:38:54,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 20:38:54,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:54,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash -146165585, now seen corresponding path program 1 times [2023-08-25 20:38:54,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:54,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568330331] [2023-08-25 20:38:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:54,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:54,187 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 20:38:54,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:54,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568330331] [2023-08-25 20:38:54,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568330331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:38:54,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:38:54,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:38:54,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659639944] [2023-08-25 20:38:54,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:54,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:38:54,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:54,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:38:54,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:38:54,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 504 [2023-08-25 20:38:54,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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 20:38:54,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:54,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 504 [2023-08-25 20:38:54,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:54,311 INFO L124 PetriNetUnfolderBase]: 622/1120 cut-off events. [2023-08-25 20:38:54,311 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-25 20:38:54,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 1120 events. 622/1120 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5556 event pairs, 418 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 2024. Up to 876 conditions per place. [2023-08-25 20:38:54,318 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 25 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-25 20:38:54,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 152 flow [2023-08-25 20:38:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:38:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:38:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-25 20:38:54,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42923280423280424 [2023-08-25 20:38:54,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-25 20:38:54,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-25 20:38:54,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:54,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-25 20:38:54,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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 20:38:54,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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 20:38:54,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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 20:38:54,326 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 104 flow. Second operand 3 states and 649 transitions. [2023-08-25 20:38:54,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 152 flow [2023-08-25 20:38:54,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:38:54,327 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 101 flow [2023-08-25 20:38:54,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-25 20:38:54,328 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -37 predicate places. [2023-08-25 20:38:54,328 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 101 flow [2023-08-25 20:38:54,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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 20:38:54,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:54,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:38:54,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 20:38:54,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:54,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1675762515, now seen corresponding path program 1 times [2023-08-25 20:38:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829096606] [2023-08-25 20:38:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:54,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:54,490 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 20:38:54,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829096606] [2023-08-25 20:38:54,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829096606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:38:54,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:38:54,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:38:54,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298698570] [2023-08-25 20:38:54,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:54,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:38:54,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:54,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:38:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:38:54,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 504 [2023-08-25 20:38:54,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 20:38:54,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:54,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 504 [2023-08-25 20:38:54,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:54,607 INFO L124 PetriNetUnfolderBase]: 333/763 cut-off events. [2023-08-25 20:38:54,608 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-25 20:38:54,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 763 events. 333/763 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4356 event pairs, 176 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 1244. Up to 462 conditions per place. [2023-08-25 20:38:54,612 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 22 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-25 20:38:54,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 151 flow [2023-08-25 20:38:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:38:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:38:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-25 20:38:54,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054232804232804 [2023-08-25 20:38:54,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-25 20:38:54,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-25 20:38:54,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:54,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-25 20:38:54,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 20:38:54,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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 20:38:54,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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 20:38:54,620 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 101 flow. Second operand 3 states and 613 transitions. [2023-08-25 20:38:54,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 151 flow [2023-08-25 20:38:54,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:38:54,622 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 112 flow [2023-08-25 20:38:54,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-25 20:38:54,623 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -35 predicate places. [2023-08-25 20:38:54,623 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 112 flow [2023-08-25 20:38:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 20:38:54,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:54,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:38:54,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 20:38:54,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:54,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:54,624 INFO L85 PathProgramCache]: Analyzing trace with hash 326515521, now seen corresponding path program 1 times [2023-08-25 20:38:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:54,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33903939] [2023-08-25 20:38:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:55,041 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 20:38:55,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33903939] [2023-08-25 20:38:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33903939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:38:55,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:38:55,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:38:55,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741116906] [2023-08-25 20:38:55,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:55,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:38:55,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:38:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:38:55,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 504 [2023-08-25 20:38:55,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 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 20:38:55,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:55,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 504 [2023-08-25 20:38:55,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:55,499 INFO L124 PetriNetUnfolderBase]: 969/1403 cut-off events. [2023-08-25 20:38:55,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 20:38:55,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1403 events. 969/1403 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6321 event pairs, 81 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 2729. Up to 584 conditions per place. [2023-08-25 20:38:55,507 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 66 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-08-25 20:38:55,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 314 flow [2023-08-25 20:38:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:38:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:38:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1222 transitions. [2023-08-25 20:38:55,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041005291005291 [2023-08-25 20:38:55,511 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1222 transitions. [2023-08-25 20:38:55,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1222 transitions. [2023-08-25 20:38:55,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:55,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1222 transitions. [2023-08-25 20:38:55,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.66666666666666) internal successors, (1222), 6 states have internal predecessors, (1222), 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 20:38:55,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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 20:38:55,521 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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 20:38:55,521 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 112 flow. Second operand 6 states and 1222 transitions. [2023-08-25 20:38:55,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 314 flow [2023-08-25 20:38:55,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 310 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 20:38:55,523 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 114 flow [2023-08-25 20:38:55,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-25 20:38:55,524 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -32 predicate places. [2023-08-25 20:38:55,524 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 114 flow [2023-08-25 20:38:55,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 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 20:38:55,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:55,525 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 20:38:55,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 20:38:55,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:55,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash 694925780, now seen corresponding path program 1 times [2023-08-25 20:38:55,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:55,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530275410] [2023-08-25 20:38:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:55,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:38:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:55,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530275410] [2023-08-25 20:38:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530275410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:38:55,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695380032] [2023-08-25 20:38:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:55,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:38:55,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:38:55,624 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 20:38:55,657 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 20:38:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:55,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 20:38:55,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:38:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:38:55,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:38:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:38:55,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695380032] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 20:38:55,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 20:38:55,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-25 20:38:55,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838906794] [2023-08-25 20:38:55,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:55,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 20:38:55,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 20:38:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-25 20:38:55,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 504 [2023-08-25 20:38:55,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:38:55,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:55,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 504 [2023-08-25 20:38:55,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:56,012 INFO L124 PetriNetUnfolderBase]: 376/760 cut-off events. [2023-08-25 20:38:56,012 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-25 20:38:56,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 760 events. 376/760 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3760 event pairs, 101 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1426. Up to 321 conditions per place. [2023-08-25 20:38:56,017 INFO L140 encePairwiseOnDemand]: 498/504 looper letters, 31 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-08-25 20:38:56,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 212 flow [2023-08-25 20:38:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 20:38:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 20:38:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2023-08-25 20:38:56,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956349206349206 [2023-08-25 20:38:56,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2023-08-25 20:38:56,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2023-08-25 20:38:56,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:56,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2023-08-25 20:38:56,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 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 20:38:56,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 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 20:38:56,028 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 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 20:38:56,028 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 114 flow. Second operand 5 states and 997 transitions. [2023-08-25 20:38:56,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 212 flow [2023-08-25 20:38:56,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 203 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 20:38:56,031 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 130 flow [2023-08-25 20:38:56,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-08-25 20:38:56,031 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -30 predicate places. [2023-08-25 20:38:56,032 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 130 flow [2023-08-25 20:38:56,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:38:56,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:56,032 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] [2023-08-25 20:38:56,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 20:38:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-25 20:38:56,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:56,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1802651719, now seen corresponding path program 1 times [2023-08-25 20:38:56,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:56,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405680471] [2023-08-25 20:38:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:56,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:56,585 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 20:38:56,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:56,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405680471] [2023-08-25 20:38:56,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405680471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:38:56,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:38:56,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:38:56,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427983919] [2023-08-25 20:38:56,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:56,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:38:56,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:56,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:38:56,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:38:56,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 504 [2023-08-25 20:38:56,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 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 20:38:56,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:56,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 504 [2023-08-25 20:38:56,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:56,922 INFO L124 PetriNetUnfolderBase]: 891/1274 cut-off events. [2023-08-25 20:38:56,922 INFO L125 PetriNetUnfolderBase]: For 490/608 co-relation queries the response was YES. [2023-08-25 20:38:56,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2929 conditions, 1274 events. 891/1274 cut-off events. For 490/608 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5712 event pairs, 463 based on Foata normal form. 118/1313 useless extension candidates. Maximal degree in co-relation 2922. Up to 1024 conditions per place. [2023-08-25 20:38:56,932 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 54 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-08-25 20:38:56,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 284 flow [2023-08-25 20:38:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:38:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:38:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1209 transitions. [2023-08-25 20:38:56,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998015873015873 [2023-08-25 20:38:56,937 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1209 transitions. [2023-08-25 20:38:56,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1209 transitions. [2023-08-25 20:38:56,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:56,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1209 transitions. [2023-08-25 20:38:56,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.5) internal successors, (1209), 6 states have internal predecessors, (1209), 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 20:38:56,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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 20:38:56,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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 20:38:56,947 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 130 flow. Second operand 6 states and 1209 transitions. [2023-08-25 20:38:56,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 284 flow [2023-08-25 20:38:56,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 278 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 20:38:56,950 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 130 flow [2023-08-25 20:38:56,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2023-08-25 20:38:56,951 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -29 predicate places. [2023-08-25 20:38:56,951 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 130 flow [2023-08-25 20:38:56,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 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 20:38:56,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:56,952 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] [2023-08-25 20:38:56,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 20:38:56,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:56,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:56,952 INFO L85 PathProgramCache]: Analyzing trace with hash -301735466, now seen corresponding path program 1 times [2023-08-25 20:38:56,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:56,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070451335] [2023-08-25 20:38:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:57,345 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 20:38:57,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:57,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070451335] [2023-08-25 20:38:57,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070451335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:38:57,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:38:57,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:38:57,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149725101] [2023-08-25 20:38:57,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:57,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:38:57,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:57,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:38:57,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:38:57,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 504 [2023-08-25 20:38:57,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 196.83333333333334) internal successors, (1181), 6 states have internal predecessors, (1181), 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 20:38:57,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:57,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 504 [2023-08-25 20:38:57,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:57,702 INFO L124 PetriNetUnfolderBase]: 888/1268 cut-off events. [2023-08-25 20:38:57,702 INFO L125 PetriNetUnfolderBase]: For 370/488 co-relation queries the response was YES. [2023-08-25 20:38:57,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 1268 events. 888/1268 cut-off events. For 370/488 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5691 event pairs, 525 based on Foata normal form. 118/1310 useless extension candidates. Maximal degree in co-relation 2882. Up to 1180 conditions per place. [2023-08-25 20:38:57,712 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 45 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-08-25 20:38:57,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 250 flow [2023-08-25 20:38:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:38:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:38:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1200 transitions. [2023-08-25 20:38:57,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2023-08-25 20:38:57,717 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1200 transitions. [2023-08-25 20:38:57,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1200 transitions. [2023-08-25 20:38:57,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:57,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1200 transitions. [2023-08-25 20:38:57,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 20:38:57,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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 20:38:57,726 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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 20:38:57,726 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 130 flow. Second operand 6 states and 1200 transitions. [2023-08-25 20:38:57,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 250 flow [2023-08-25 20:38:57,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 243 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 20:38:57,730 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 129 flow [2023-08-25 20:38:57,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-08-25 20:38:57,733 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -29 predicate places. [2023-08-25 20:38:57,733 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 129 flow [2023-08-25 20:38:57,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.83333333333334) internal successors, (1181), 6 states have internal predecessors, (1181), 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 20:38:57,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:57,734 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] [2023-08-25 20:38:57,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 20:38:57,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:57,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1893252660, now seen corresponding path program 1 times [2023-08-25 20:38:57,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:57,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690825291] [2023-08-25 20:38:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:57,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:57,802 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 20:38:57,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:57,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690825291] [2023-08-25 20:38:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690825291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:38:57,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:38:57,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 20:38:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500393409] [2023-08-25 20:38:57,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:38:57,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:38:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:38:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:38:57,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:38:57,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 504 [2023-08-25 20:38:57,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 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 20:38:57,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:38:57,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 504 [2023-08-25 20:38:57,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:38:57,961 INFO L124 PetriNetUnfolderBase]: 396/872 cut-off events. [2023-08-25 20:38:57,961 INFO L125 PetriNetUnfolderBase]: For 208/266 co-relation queries the response was YES. [2023-08-25 20:38:57,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 872 events. 396/872 cut-off events. For 208/266 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4827 event pairs, 179 based on Foata normal form. 90/898 useless extension candidates. Maximal degree in co-relation 1670. Up to 440 conditions per place. [2023-08-25 20:38:57,967 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 34 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-25 20:38:57,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 241 flow [2023-08-25 20:38:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:38:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:38:57,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-25 20:38:57,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42410714285714285 [2023-08-25 20:38:57,971 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-25 20:38:57,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-25 20:38:57,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:38:57,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-25 20:38:57,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 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 20:38:57,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 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 20:38:57,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 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 20:38:57,977 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 129 flow. Second operand 4 states and 855 transitions. [2023-08-25 20:38:57,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 241 flow [2023-08-25 20:38:57,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 20:38:57,979 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 136 flow [2023-08-25 20:38:57,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2023-08-25 20:38:57,981 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -29 predicate places. [2023-08-25 20:38:57,984 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 136 flow [2023-08-25 20:38:57,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 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 20:38:57,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:38:57,985 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] [2023-08-25 20:38:57,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 20:38:57,985 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:38:57,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:38:57,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1898214015, now seen corresponding path program 1 times [2023-08-25 20:38:57,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:38:57,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922471182] [2023-08-25 20:38:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:57,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:38:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:38:58,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:38:58,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922471182] [2023-08-25 20:38:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922471182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:38:58,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075222790] [2023-08-25 20:38:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:38:58,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:38:58,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:38:58,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:38:58,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 20:38:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:38:59,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-25 20:38:59,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:38:59,359 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 20:38:59,388 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 20:38:59,599 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 82 treesize of output 58 [2023-08-25 20:38:59,606 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-25 20:38:59,611 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-25 20:38:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:38:59,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:39:00,365 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:00,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 99 [2023-08-25 20:39:00,376 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:00,377 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 51 treesize of output 67 [2023-08-25 20:39:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:00,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075222790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:39:00,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:39:00,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-25 20:39:00,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970955650] [2023-08-25 20:39:00,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:39:00,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 20:39:00,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:39:00,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 20:39:00,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-25 20:39:00,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 504 [2023-08-25 20:39:00,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 136 flow. Second operand has 19 states, 19 states have (on average 166.05263157894737) internal successors, (3155), 19 states have internal predecessors, (3155), 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 20:39:00,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:39:00,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 504 [2023-08-25 20:39:00,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:39:01,624 INFO L124 PetriNetUnfolderBase]: 846/1682 cut-off events. [2023-08-25 20:39:01,624 INFO L125 PetriNetUnfolderBase]: For 950/950 co-relation queries the response was YES. [2023-08-25 20:39:01,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 1682 events. 846/1682 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10419 event pairs, 66 based on Foata normal form. 1/1647 useless extension candidates. Maximal degree in co-relation 3764. Up to 800 conditions per place. [2023-08-25 20:39:01,638 INFO L140 encePairwiseOnDemand]: 493/504 looper letters, 77 selfloop transitions, 25 changer transitions 1/122 dead transitions. [2023-08-25 20:39:01,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 588 flow [2023-08-25 20:39:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 20:39:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 20:39:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1732 transitions. [2023-08-25 20:39:01,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34365079365079365 [2023-08-25 20:39:01,644 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1732 transitions. [2023-08-25 20:39:01,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1732 transitions. [2023-08-25 20:39:01,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:39:01,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1732 transitions. [2023-08-25 20:39:01,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.2) internal successors, (1732), 10 states have internal predecessors, (1732), 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 20:39:01,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:39:01,656 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:39:01,656 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 136 flow. Second operand 10 states and 1732 transitions. [2023-08-25 20:39:01,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 588 flow [2023-08-25 20:39:01,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 122 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 20:39:01,659 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 305 flow [2023-08-25 20:39:01,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=305, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-08-25 20:39:01,660 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -18 predicate places. [2023-08-25 20:39:01,660 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 305 flow [2023-08-25 20:39:01,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 166.05263157894737) internal successors, (3155), 19 states have internal predecessors, (3155), 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 20:39:01,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:39:01,662 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] [2023-08-25 20:39:01,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 20:39:01,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-25 20:39:01,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:39:01,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:39:01,874 INFO L85 PathProgramCache]: Analyzing trace with hash 591858737, now seen corresponding path program 2 times [2023-08-25 20:39:01,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:39:01,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93651701] [2023-08-25 20:39:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:39:01,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:39:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:39:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:02,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:39:02,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93651701] [2023-08-25 20:39:02,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93651701] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:39:02,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878209381] [2023-08-25 20:39:02,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:39:02,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:02,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:39:02,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:39:02,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 20:39:02,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:39:02,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:39:02,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-25 20:39:02,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:39:03,353 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 82 treesize of output 58 [2023-08-25 20:39:03,358 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-25 20:39:03,362 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-25 20:39:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:39:03,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:39:03,571 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:03,571 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 75 treesize of output 91 [2023-08-25 20:39:03,608 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:03,609 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:39:03,902 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:03,903 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 99 [2023-08-25 20:39:03,912 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:03,913 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 51 treesize of output 67 [2023-08-25 20:39:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:39:04,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878209381] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:39:04,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:39:04,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2023-08-25 20:39:04,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803933882] [2023-08-25 20:39:04,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:39:04,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:39:04,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:39:04,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:39:04,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:39:04,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 504 [2023-08-25 20:39:04,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 305 flow. Second operand has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 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 20:39:04,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:39:04,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 504 [2023-08-25 20:39:04,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:39:05,133 INFO L124 PetriNetUnfolderBase]: 1233/2518 cut-off events. [2023-08-25 20:39:05,133 INFO L125 PetriNetUnfolderBase]: For 2507/2578 co-relation queries the response was YES. [2023-08-25 20:39:05,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6562 conditions, 2518 events. 1233/2518 cut-off events. For 2507/2578 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16343 event pairs, 181 based on Foata normal form. 44/2528 useless extension candidates. Maximal degree in co-relation 6550. Up to 1275 conditions per place. [2023-08-25 20:39:05,152 INFO L140 encePairwiseOnDemand]: 493/504 looper letters, 92 selfloop transitions, 54 changer transitions 1/165 dead transitions. [2023-08-25 20:39:05,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 165 transitions, 1021 flow [2023-08-25 20:39:05,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 20:39:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 20:39:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2506 transitions. [2023-08-25 20:39:05,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3314814814814815 [2023-08-25 20:39:05,159 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2506 transitions. [2023-08-25 20:39:05,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2506 transitions. [2023-08-25 20:39:05,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:39:05,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2506 transitions. [2023-08-25 20:39:05,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 167.06666666666666) internal successors, (2506), 15 states have internal predecessors, (2506), 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 20:39:05,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 504.0) internal successors, (8064), 16 states have internal predecessors, (8064), 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 20:39:05,174 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 504.0) internal successors, (8064), 16 states have internal predecessors, (8064), 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 20:39:05,174 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 305 flow. Second operand 15 states and 2506 transitions. [2023-08-25 20:39:05,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 165 transitions, 1021 flow [2023-08-25 20:39:05,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 165 transitions, 1013 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-25 20:39:05,182 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 728 flow [2023-08-25 20:39:05,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=728, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2023-08-25 20:39:05,183 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2023-08-25 20:39:05,183 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 728 flow [2023-08-25 20:39:05,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 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 20:39:05,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:39:05,184 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] [2023-08-25 20:39:05,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 20:39:05,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:05,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:39:05,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:39:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash -455065589, now seen corresponding path program 3 times [2023-08-25 20:39:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:39:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057945464] [2023-08-25 20:39:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:39:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:39:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:39:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:06,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:39:06,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057945464] [2023-08-25 20:39:06,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057945464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:39:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005983892] [2023-08-25 20:39:06,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:39:06,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:06,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:39:06,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:39:06,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 20:39:06,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 20:39:06,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:39:06,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-25 20:39:06,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:39:07,056 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 20:39:07,063 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 20:39:07,133 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 72 treesize of output 52 [2023-08-25 20:39:07,137 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-25 20:39:07,140 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-25 20:39:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:07,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:39:07,643 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:07,644 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 99 [2023-08-25 20:39:07,656 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:07,656 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 51 treesize of output 67 [2023-08-25 20:39:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:08,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005983892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:39:08,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:39:08,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 20:39:08,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655995698] [2023-08-25 20:39:08,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:39:08,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 20:39:08,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:39:08,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 20:39:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-25 20:39:08,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 504 [2023-08-25 20:39:08,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 728 flow. Second operand has 18 states, 18 states have (on average 165.72222222222223) internal successors, (2983), 18 states have internal predecessors, (2983), 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 20:39:08,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:39:08,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 504 [2023-08-25 20:39:08,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:39:08,878 INFO L124 PetriNetUnfolderBase]: 1248/2610 cut-off events. [2023-08-25 20:39:08,878 INFO L125 PetriNetUnfolderBase]: For 4901/5011 co-relation queries the response was YES. [2023-08-25 20:39:08,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8098 conditions, 2610 events. 1248/2610 cut-off events. For 4901/5011 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17509 event pairs, 240 based on Foata normal form. 32/2584 useless extension candidates. Maximal degree in co-relation 8079. Up to 1434 conditions per place. [2023-08-25 20:39:08,901 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 91 selfloop transitions, 43 changer transitions 1/160 dead transitions. [2023-08-25 20:39:08,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 160 transitions, 1214 flow [2023-08-25 20:39:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 20:39:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 20:39:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1549 transitions. [2023-08-25 20:39:08,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34149029982363316 [2023-08-25 20:39:08,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1549 transitions. [2023-08-25 20:39:08,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1549 transitions. [2023-08-25 20:39:08,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:39:08,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1549 transitions. [2023-08-25 20:39:08,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.11111111111111) internal successors, (1549), 9 states have internal predecessors, (1549), 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 20:39:08,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 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 20:39:08,915 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 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 20:39:08,915 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 728 flow. Second operand 9 states and 1549 transitions. [2023-08-25 20:39:08,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 160 transitions, 1214 flow [2023-08-25 20:39:08,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 160 transitions, 1203 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 20:39:08,929 INFO L231 Difference]: Finished difference. Result has 96 places, 122 transitions, 910 flow [2023-08-25 20:39:08,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=96, PETRI_TRANSITIONS=122} [2023-08-25 20:39:08,930 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2023-08-25 20:39:08,930 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 122 transitions, 910 flow [2023-08-25 20:39:08,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 165.72222222222223) internal successors, (2983), 18 states have internal predecessors, (2983), 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 20:39:08,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:39:08,931 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] [2023-08-25 20:39:08,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 20:39:09,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:09,137 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:39:09,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:39:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash -60090033, now seen corresponding path program 4 times [2023-08-25 20:39:09,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:39:09,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746434026] [2023-08-25 20:39:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:39:09,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:39:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:39:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:10,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:39:10,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746434026] [2023-08-25 20:39:10,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746434026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:39:10,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143711049] [2023-08-25 20:39:10,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:39:10,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:10,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:39:10,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:39:10,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 20:39:10,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:39:10,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:39:10,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-25 20:39:10,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:39:11,396 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 0 case distinctions, treesize of input 60 treesize of output 73 [2023-08-25 20:39:11,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 20:39:11,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 52 [2023-08-25 20:39:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:39:11,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:39:11,690 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:11,690 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 75 treesize of output 91 [2023-08-25 20:39:11,704 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:11,705 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:39:11,940 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:11,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 99 [2023-08-25 20:39:11,950 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:11,950 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 51 treesize of output 67 [2023-08-25 20:39:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:39:12,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143711049] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:39:12,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:39:12,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2023-08-25 20:39:12,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890472496] [2023-08-25 20:39:12,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:39:12,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 20:39:12,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:39:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 20:39:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-08-25 20:39:12,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 504 [2023-08-25 20:39:12,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 910 flow. Second operand has 25 states, 25 states have (on average 134.76) internal successors, (3369), 25 states have internal predecessors, (3369), 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 20:39:12,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:39:12,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 504 [2023-08-25 20:39:12,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:39:14,794 INFO L124 PetriNetUnfolderBase]: 5273/8748 cut-off events. [2023-08-25 20:39:14,794 INFO L125 PetriNetUnfolderBase]: For 23198/23470 co-relation queries the response was YES. [2023-08-25 20:39:14,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31323 conditions, 8748 events. 5273/8748 cut-off events. For 23198/23470 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 59474 event pairs, 724 based on Foata normal form. 165/8858 useless extension candidates. Maximal degree in co-relation 31301. Up to 4929 conditions per place. [2023-08-25 20:39:14,869 INFO L140 encePairwiseOnDemand]: 492/504 looper letters, 253 selfloop transitions, 96 changer transitions 1/356 dead transitions. [2023-08-25 20:39:14,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 356 transitions, 2681 flow [2023-08-25 20:39:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 20:39:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 20:39:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3163 transitions. [2023-08-25 20:39:14,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2852633477633478 [2023-08-25 20:39:14,879 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3163 transitions. [2023-08-25 20:39:14,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3163 transitions. [2023-08-25 20:39:14,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:39:14,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3163 transitions. [2023-08-25 20:39:14,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 143.77272727272728) internal successors, (3163), 22 states have internal predecessors, (3163), 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 20:39:14,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 504.0) internal successors, (11592), 23 states have internal predecessors, (11592), 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 20:39:14,898 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 504.0) internal successors, (11592), 23 states have internal predecessors, (11592), 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 20:39:14,899 INFO L175 Difference]: Start difference. First operand has 96 places, 122 transitions, 910 flow. Second operand 22 states and 3163 transitions. [2023-08-25 20:39:14,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 356 transitions, 2681 flow [2023-08-25 20:39:14,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 356 transitions, 2613 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-25 20:39:14,953 INFO L231 Difference]: Finished difference. Result has 125 places, 175 transitions, 1715 flow [2023-08-25 20:39:14,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1715, PETRI_PLACES=125, PETRI_TRANSITIONS=175} [2023-08-25 20:39:14,954 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 38 predicate places. [2023-08-25 20:39:14,954 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 175 transitions, 1715 flow [2023-08-25 20:39:14,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 134.76) internal successors, (3369), 25 states have internal predecessors, (3369), 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 20:39:14,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:39:14,955 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] [2023-08-25 20:39:14,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-25 20:39:15,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-25 20:39:15,162 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:39:15,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:39:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash 222556667, now seen corresponding path program 5 times [2023-08-25 20:39:15,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:39:15,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204305746] [2023-08-25 20:39:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:39:15,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:39:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:39:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:16,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:39:16,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204305746] [2023-08-25 20:39:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204305746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:39:16,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551114705] [2023-08-25 20:39:16,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:39:16,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:16,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:39:16,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:39:16,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 20:39:16,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:39:16,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:39:16,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-25 20:39:16,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:39:16,722 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 20:39:16,729 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 20:39:16,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:39:16,813 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 34 treesize of output 32 [2023-08-25 20:39:16,921 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 75 treesize of output 51 [2023-08-25 20:39:16,924 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-25 20:39:16,927 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-25 20:39:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:39:17,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:39:17,445 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (= c_~max1~0 c_~max2~0)) (.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_1180 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1180) c_~A~0.base) .cse1))) (or (= .cse0 c_~max1~0) (<= .cse0 c_~max2~0) (<= .cse0 c_~max3~0)))) (or (and (or .cse2 (< c_~max2~0 c_~max3~0)) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_1180 (Array Int Int))) (< c_~max3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1180) c_~A~0.base) .cse1)))) (or .cse2 (forall ((v_ArrVal_1180 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1180) c_~A~0.base) .cse1))) (or (< c_~max2~0 .cse3) (<= .cse3 c_~max3~0))))))) is different from false [2023-08-25 20:39:17,527 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:17,527 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 272 treesize of output 208 [2023-08-25 20:39:17,546 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:17,547 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 51 treesize of output 67 [2023-08-25 20:39:17,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 148 treesize of output 130 [2023-08-25 20:39:17,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 130 treesize of output 118 [2023-08-25 20:39:17,570 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 118 treesize of output 112 [2023-08-25 20:39:17,588 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:17,589 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:39:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-08-25 20:39:18,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551114705] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:39:18,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:39:18,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 20:39:18,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170342821] [2023-08-25 20:39:18,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:39:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 20:39:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:39:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 20:39:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=493, Unknown=1, NotChecked=46, Total=650 [2023-08-25 20:39:18,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 504 [2023-08-25 20:39:18,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 175 transitions, 1715 flow. Second operand has 26 states, 26 states have (on average 134.26923076923077) internal successors, (3491), 26 states have internal predecessors, (3491), 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 20:39:18,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:39:18,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 504 [2023-08-25 20:39:18,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:39:20,471 INFO L124 PetriNetUnfolderBase]: 6119/10460 cut-off events. [2023-08-25 20:39:20,472 INFO L125 PetriNetUnfolderBase]: For 38239/38667 co-relation queries the response was YES. [2023-08-25 20:39:20,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41131 conditions, 10460 events. 6119/10460 cut-off events. For 38239/38667 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 75064 event pairs, 349 based on Foata normal form. 247/10657 useless extension candidates. Maximal degree in co-relation 41096. Up to 5137 conditions per place. [2023-08-25 20:39:20,564 INFO L140 encePairwiseOnDemand]: 492/504 looper letters, 219 selfloop transitions, 115 changer transitions 1/341 dead transitions. [2023-08-25 20:39:20,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 341 transitions, 3022 flow [2023-08-25 20:39:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 20:39:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 20:39:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2465 transitions. [2023-08-25 20:39:20,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2876984126984127 [2023-08-25 20:39:20,572 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2465 transitions. [2023-08-25 20:39:20,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2465 transitions. [2023-08-25 20:39:20,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:39:20,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2465 transitions. [2023-08-25 20:39:20,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 145.0) internal successors, (2465), 17 states have internal predecessors, (2465), 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 20:39:20,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 504.0) internal successors, (9072), 18 states have internal predecessors, (9072), 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 20:39:20,591 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 504.0) internal successors, (9072), 18 states have internal predecessors, (9072), 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 20:39:20,591 INFO L175 Difference]: Start difference. First operand has 125 places, 175 transitions, 1715 flow. Second operand 17 states and 2465 transitions. [2023-08-25 20:39:20,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 341 transitions, 3022 flow [2023-08-25 20:39:20,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 341 transitions, 2896 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-08-25 20:39:20,736 INFO L231 Difference]: Finished difference. Result has 136 places, 191 transitions, 2051 flow [2023-08-25 20:39:20,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2051, PETRI_PLACES=136, PETRI_TRANSITIONS=191} [2023-08-25 20:39:20,737 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 49 predicate places. [2023-08-25 20:39:20,737 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 191 transitions, 2051 flow [2023-08-25 20:39:20,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 134.26923076923077) internal successors, (3491), 26 states have internal predecessors, (3491), 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 20:39:20,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:39:20,738 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] [2023-08-25 20:39:20,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 20:39:20,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:20,944 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:39:20,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:39:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash -508094467, now seen corresponding path program 6 times [2023-08-25 20:39:20,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:39:20,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140889132] [2023-08-25 20:39:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:39:20,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:39:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:39:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:21,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:39:21,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140889132] [2023-08-25 20:39:21,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140889132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:39:21,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896708079] [2023-08-25 20:39:21,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:39:21,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:39:21,989 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:39:22,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 20:39:22,590 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 20:39:22,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:39:22,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-25 20:39:22,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:39:22,879 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 0 case distinctions, treesize of input 60 treesize of output 73 [2023-08-25 20:39:22,902 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 8 treesize of output 1 [2023-08-25 20:39:22,909 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:22,910 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:39:23,061 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-25 20:39:23,062 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 80 [2023-08-25 20:39:23,069 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-25 20:39:23,075 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-25 20:39:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:39:23,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:39:23,511 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:23,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 99 [2023-08-25 20:39:23,520 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:23,520 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 51 treesize of output 67 [2023-08-25 20:39:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:39:23,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896708079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:39:23,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:39:23,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 24 [2023-08-25 20:39:23,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570374170] [2023-08-25 20:39:23,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:39:23,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 20:39:23,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:39:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 20:39:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2023-08-25 20:39:23,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 504 [2023-08-25 20:39:23,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 191 transitions, 2051 flow. Second operand has 26 states, 26 states have (on average 135.15384615384616) internal successors, (3514), 26 states have internal predecessors, (3514), 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 20:39:23,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:39:23,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 504 [2023-08-25 20:39:23,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:39:26,544 INFO L124 PetriNetUnfolderBase]: 7739/12563 cut-off events. [2023-08-25 20:39:26,544 INFO L125 PetriNetUnfolderBase]: For 58650/59149 co-relation queries the response was YES. [2023-08-25 20:39:26,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54271 conditions, 12563 events. 7739/12563 cut-off events. For 58650/59149 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 88852 event pairs, 1082 based on Foata normal form. 335/12817 useless extension candidates. Maximal degree in co-relation 54233. Up to 7649 conditions per place. [2023-08-25 20:39:26,646 INFO L140 encePairwiseOnDemand]: 492/504 looper letters, 255 selfloop transitions, 117 changer transitions 1/379 dead transitions. [2023-08-25 20:39:26,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 379 transitions, 3597 flow [2023-08-25 20:39:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 20:39:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 20:39:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3150 transitions. [2023-08-25 20:39:26,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2023-08-25 20:39:26,652 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3150 transitions. [2023-08-25 20:39:26,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3150 transitions. [2023-08-25 20:39:26,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:39:26,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3150 transitions. [2023-08-25 20:39:26,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 143.1818181818182) internal successors, (3150), 22 states have internal predecessors, (3150), 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 20:39:26,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 504.0) internal successors, (11592), 23 states have internal predecessors, (11592), 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 20:39:26,669 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 504.0) internal successors, (11592), 23 states have internal predecessors, (11592), 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 20:39:26,669 INFO L175 Difference]: Start difference. First operand has 136 places, 191 transitions, 2051 flow. Second operand 22 states and 3150 transitions. [2023-08-25 20:39:26,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 379 transitions, 3597 flow [2023-08-25 20:39:26,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 379 transitions, 3460 flow, removed 39 selfloop flow, removed 8 redundant places. [2023-08-25 20:39:26,950 INFO L231 Difference]: Finished difference. Result has 154 places, 216 transitions, 2519 flow [2023-08-25 20:39:26,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2519, PETRI_PLACES=154, PETRI_TRANSITIONS=216} [2023-08-25 20:39:26,950 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 67 predicate places. [2023-08-25 20:39:26,950 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 216 transitions, 2519 flow [2023-08-25 20:39:26,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 135.15384615384616) internal successors, (3514), 26 states have internal predecessors, (3514), 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 20:39:26,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:39:26,952 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] [2023-08-25 20:39:26,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 20:39:27,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:27,158 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:39:27,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:39:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -896871799, now seen corresponding path program 7 times [2023-08-25 20:39:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:39:27,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122433291] [2023-08-25 20:39:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:39:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:39:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:39:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:27,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:39:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122433291] [2023-08-25 20:39:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122433291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:39:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994077427] [2023-08-25 20:39:27,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:39:27,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:27,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:39:27,890 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:39:27,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 20:39:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:39:28,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-25 20:39:28,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:39:28,262 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 0 case distinctions, treesize of input 60 treesize of output 73 [2023-08-25 20:39:28,280 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:28,280 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:39:28,287 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 8 treesize of output 1 [2023-08-25 20:39:28,399 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 83 treesize of output 59 [2023-08-25 20:39:28,403 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-25 20:39:28,407 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-25 20:39:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:28,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:39:28,859 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:28,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 99 [2023-08-25 20:39:28,868 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:28,869 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 51 treesize of output 67 [2023-08-25 20:39:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:29,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994077427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:39:29,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:39:29,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-25 20:39:29,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012883386] [2023-08-25 20:39:29,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:39:29,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 20:39:29,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:39:29,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 20:39:29,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-08-25 20:39:29,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 504 [2023-08-25 20:39:29,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 216 transitions, 2519 flow. Second operand has 21 states, 21 states have (on average 166.14285714285714) internal successors, (3489), 21 states have internal predecessors, (3489), 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 20:39:29,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:39:29,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 504 [2023-08-25 20:39:29,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:39:30,913 INFO L124 PetriNetUnfolderBase]: 2668/5489 cut-off events. [2023-08-25 20:39:30,914 INFO L125 PetriNetUnfolderBase]: For 31775/32120 co-relation queries the response was YES. [2023-08-25 20:39:30,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23639 conditions, 5489 events. 2668/5489 cut-off events. For 31775/32120 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42466 event pairs, 467 based on Foata normal form. 139/5525 useless extension candidates. Maximal degree in co-relation 23597. Up to 2758 conditions per place. [2023-08-25 20:39:30,966 INFO L140 encePairwiseOnDemand]: 494/504 looper letters, 164 selfloop transitions, 115 changer transitions 7/314 dead transitions. [2023-08-25 20:39:30,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 314 transitions, 3775 flow [2023-08-25 20:39:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 20:39:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 20:39:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2750 transitions. [2023-08-25 20:39:30,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3410218253968254 [2023-08-25 20:39:30,969 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2750 transitions. [2023-08-25 20:39:30,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2750 transitions. [2023-08-25 20:39:30,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:39:30,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2750 transitions. [2023-08-25 20:39:30,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.875) internal successors, (2750), 16 states have internal predecessors, (2750), 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 20:39:30,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 504.0) internal successors, (8568), 17 states have internal predecessors, (8568), 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 20:39:30,979 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 504.0) internal successors, (8568), 17 states have internal predecessors, (8568), 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 20:39:30,979 INFO L175 Difference]: Start difference. First operand has 154 places, 216 transitions, 2519 flow. Second operand 16 states and 2750 transitions. [2023-08-25 20:39:30,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 314 transitions, 3775 flow [2023-08-25 20:39:31,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 314 transitions, 3399 flow, removed 127 selfloop flow, removed 11 redundant places. [2023-08-25 20:39:31,071 INFO L231 Difference]: Finished difference. Result has 162 places, 245 transitions, 2862 flow [2023-08-25 20:39:31,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2862, PETRI_PLACES=162, PETRI_TRANSITIONS=245} [2023-08-25 20:39:31,072 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 75 predicate places. [2023-08-25 20:39:31,072 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 245 transitions, 2862 flow [2023-08-25 20:39:31,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 166.14285714285714) internal successors, (3489), 21 states have internal predecessors, (3489), 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 20:39:31,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:39:31,073 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] [2023-08-25 20:39:31,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 20:39:31,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 20:39:31,285 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:39:31,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:39:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash 449935563, now seen corresponding path program 8 times [2023-08-25 20:39:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:39:31,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477751441] [2023-08-25 20:39:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:39:31,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:39:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:39:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:32,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:39:32,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477751441] [2023-08-25 20:39:32,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477751441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:39:32,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923390040] [2023-08-25 20:39:32,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:39:32,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:39:32,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:39:32,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:39:32,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 20:39:32,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:39:32,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:39:32,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-25 20:39:32,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:39:32,462 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 20:39:32,504 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 20:39:32,642 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 20:39:32,648 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 20:39:32,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:39:32,737 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 34 treesize of output 32 [2023-08-25 20:39:32,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:39:32,875 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 34 treesize of output 32 [2023-08-25 20:39:32,994 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 75 treesize of output 51 [2023-08-25 20:39:32,997 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-25 20:39:33,001 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-25 20:39:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:39:33,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:39:33,531 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0))) (.cse2 (= c_~max1~0 c_~max2~0))) (and (forall ((v_ArrVal_1672 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1672) c_~A~0.base) .cse1))) (or (= .cse0 c_~max1~0) (<= .cse0 c_~max2~0) (<= .cse0 c_~max3~0)))) (or (and (or .cse2 (< c_~max2~0 c_~max3~0)) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_1672 (Array Int Int))) (< c_~max3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1672) c_~A~0.base) .cse1)))) (or (forall ((v_ArrVal_1672 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1672) c_~A~0.base) .cse1))) (or (< c_~max2~0 .cse3) (<= .cse3 c_~max3~0)))) .cse2))) is different from false [2023-08-25 20:39:35,160 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:35,160 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 75 treesize of output 91 [2023-08-25 20:39:35,230 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:39:35,230 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:40:06,540 WARN L234 SmtUtils]: Spent 30.29s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:40:06,612 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:06,613 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-08-25 20:40:06,624 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:06,624 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 307 [2023-08-25 20:40:06,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 136 treesize of output 124 [2023-08-25 20:40:06,644 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 124 treesize of output 100 [2023-08-25 20:40:06,657 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:06,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 62 [2023-08-25 20:40:06,906 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:06,906 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-08-25 20:40:06,919 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:06,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1264 treesize of output 1200 [2023-08-25 20:40:06,942 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:06,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 82 [2023-08-25 20:40:06,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 130 treesize of output 106 [2023-08-25 20:40:06,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 58 treesize of output 46 [2023-08-25 20:40:07,137 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:07,137 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-08-25 20:40:07,152 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:07,153 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 648 treesize of output 616 [2023-08-25 20:40:07,171 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:07,171 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 82 [2023-08-25 20:40:07,180 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 130 treesize of output 106 [2023-08-25 20:40:07,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 58 treesize of output 46 [2023-08-25 20:40:07,369 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-25 20:40:07,369 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 1 [2023-08-25 20:40:07,380 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-25 20:40:07,380 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 1 [2023-08-25 20:40:07,393 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-25 20:40:07,393 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 1 [2023-08-25 20:40:07,404 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-25 20:40:07,404 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 1 [2023-08-25 20:40:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:40:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923390040] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:07,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:07,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-08-25 20:40:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048033061] [2023-08-25 20:40:07,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 20:40:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 20:40:07,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=450, Unknown=8, NotChecked=44, Total=600 [2023-08-25 20:40:07,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 504 [2023-08-25 20:40:07,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 245 transitions, 2862 flow. Second operand has 25 states, 25 states have (on average 138.28) internal successors, (3457), 25 states have internal predecessors, (3457), 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 20:40:07,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:07,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 504 [2023-08-25 20:40:07,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:11,270 INFO L124 PetriNetUnfolderBase]: 9114/15736 cut-off events. [2023-08-25 20:40:11,271 INFO L125 PetriNetUnfolderBase]: For 97983/98833 co-relation queries the response was YES. [2023-08-25 20:40:11,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72197 conditions, 15736 events. 9114/15736 cut-off events. For 97983/98833 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 123826 event pairs, 847 based on Foata normal form. 226/15821 useless extension candidates. Maximal degree in co-relation 72150. Up to 9428 conditions per place. [2023-08-25 20:40:11,465 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 241 selfloop transitions, 98 changer transitions 1/356 dead transitions. [2023-08-25 20:40:11,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 356 transitions, 4032 flow [2023-08-25 20:40:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 20:40:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 20:40:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1512 transitions. [2023-08-25 20:40:11,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2023-08-25 20:40:11,468 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1512 transitions. [2023-08-25 20:40:11,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1512 transitions. [2023-08-25 20:40:11,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:11,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1512 transitions. [2023-08-25 20:40:11,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.2) internal successors, (1512), 10 states have internal predecessors, (1512), 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 20:40:11,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:40:11,473 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:40:11,473 INFO L175 Difference]: Start difference. First operand has 162 places, 245 transitions, 2862 flow. Second operand 10 states and 1512 transitions. [2023-08-25 20:40:11,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 356 transitions, 4032 flow [2023-08-25 20:40:12,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 356 transitions, 3751 flow, removed 94 selfloop flow, removed 7 redundant places. [2023-08-25 20:40:12,112 INFO L231 Difference]: Finished difference. Result has 167 places, 260 transitions, 3062 flow [2023-08-25 20:40:12,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=2581, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3062, PETRI_PLACES=167, PETRI_TRANSITIONS=260} [2023-08-25 20:40:12,113 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 80 predicate places. [2023-08-25 20:40:12,113 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 260 transitions, 3062 flow [2023-08-25 20:40:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 138.28) internal successors, (3457), 25 states have internal predecessors, (3457), 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 20:40:12,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:12,113 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] [2023-08-25 20:40:12,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:12,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 20:40:12,319 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:12,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash 727719365, now seen corresponding path program 9 times [2023-08-25 20:40:12,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:12,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728794033] [2023-08-25 20:40:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:12,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:40:12,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:12,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728794033] [2023-08-25 20:40:12,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728794033] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:12,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153512726] [2023-08-25 20:40:12,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:40:12,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:12,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:12,493 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:12,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 20:40:12,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 20:40:12,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:12,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 20:40:12,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:12,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153512726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:12,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:12,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 17 [2023-08-25 20:40:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395672669] [2023-08-25 20:40:12,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:12,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 20:40:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 20:40:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-25 20:40:12,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 504 [2023-08-25 20:40:12,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 260 transitions, 3062 flow. Second operand has 18 states, 18 states have (on average 182.22222222222223) internal successors, (3280), 18 states have internal predecessors, (3280), 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 20:40:12,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:12,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 504 [2023-08-25 20:40:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:14,792 INFO L124 PetriNetUnfolderBase]: 3990/8011 cut-off events. [2023-08-25 20:40:14,792 INFO L125 PetriNetUnfolderBase]: For 50635/50848 co-relation queries the response was YES. [2023-08-25 20:40:14,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34881 conditions, 8011 events. 3990/8011 cut-off events. For 50635/50848 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 64929 event pairs, 821 based on Foata normal form. 154/7949 useless extension candidates. Maximal degree in co-relation 34832. Up to 3040 conditions per place. [2023-08-25 20:40:14,843 INFO L140 encePairwiseOnDemand]: 491/504 looper letters, 370 selfloop transitions, 173 changer transitions 0/561 dead transitions. [2023-08-25 20:40:14,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 561 transitions, 7154 flow [2023-08-25 20:40:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 20:40:14,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 20:40:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4859 transitions. [2023-08-25 20:40:14,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708028083028083 [2023-08-25 20:40:14,849 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4859 transitions. [2023-08-25 20:40:14,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4859 transitions. [2023-08-25 20:40:14,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:14,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4859 transitions. [2023-08-25 20:40:14,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 186.8846153846154) internal successors, (4859), 26 states have internal predecessors, (4859), 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 20:40:14,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 504.0) internal successors, (13608), 27 states have internal predecessors, (13608), 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 20:40:14,863 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 504.0) internal successors, (13608), 27 states have internal predecessors, (13608), 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 20:40:14,863 INFO L175 Difference]: Start difference. First operand has 167 places, 260 transitions, 3062 flow. Second operand 26 states and 4859 transitions. [2023-08-25 20:40:14,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 561 transitions, 7154 flow [2023-08-25 20:40:14,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 561 transitions, 6920 flow, removed 64 selfloop flow, removed 5 redundant places. [2023-08-25 20:40:14,979 INFO L231 Difference]: Finished difference. Result has 202 places, 351 transitions, 4767 flow [2023-08-25 20:40:14,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4767, PETRI_PLACES=202, PETRI_TRANSITIONS=351} [2023-08-25 20:40:14,979 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 115 predicate places. [2023-08-25 20:40:14,979 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 351 transitions, 4767 flow [2023-08-25 20:40:14,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 182.22222222222223) internal successors, (3280), 18 states have internal predecessors, (3280), 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 20:40:14,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:14,980 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:40:14,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-25 20:40:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 20:40:15,180 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:15,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1741831632, now seen corresponding path program 10 times [2023-08-25 20:40:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:15,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214411213] [2023-08-25 20:40:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:15,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:15,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:15,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214411213] [2023-08-25 20:40:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214411213] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:15,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652508420] [2023-08-25 20:40:15,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:40:15,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:15,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:15,315 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:15,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 20:40:15,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:40:15,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:15,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 20:40:15,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:40:15,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:40:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652508420] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:15,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:15,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 19 [2023-08-25 20:40:15,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172113858] [2023-08-25 20:40:15,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:15,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 20:40:15,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:15,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 20:40:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-08-25 20:40:15,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 504 [2023-08-25 20:40:15,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 351 transitions, 4767 flow. Second operand has 19 states, 19 states have (on average 181.89473684210526) internal successors, (3456), 19 states have internal predecessors, (3456), 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 20:40:15,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:15,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 504 [2023-08-25 20:40:15,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:17,617 INFO L124 PetriNetUnfolderBase]: 3784/8020 cut-off events. [2023-08-25 20:40:17,617 INFO L125 PetriNetUnfolderBase]: For 97705/98175 co-relation queries the response was YES. [2023-08-25 20:40:17,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43026 conditions, 8020 events. 3784/8020 cut-off events. For 97705/98175 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 67769 event pairs, 658 based on Foata normal form. 515/8415 useless extension candidates. Maximal degree in co-relation 42962. Up to 1435 conditions per place. [2023-08-25 20:40:17,681 INFO L140 encePairwiseOnDemand]: 491/504 looper letters, 534 selfloop transitions, 138 changer transitions 0/690 dead transitions. [2023-08-25 20:40:17,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 690 transitions, 10055 flow [2023-08-25 20:40:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 20:40:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 20:40:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3768 transitions. [2023-08-25 20:40:17,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738095238095238 [2023-08-25 20:40:17,684 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3768 transitions. [2023-08-25 20:40:17,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3768 transitions. [2023-08-25 20:40:17,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:17,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3768 transitions. [2023-08-25 20:40:17,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 188.4) internal successors, (3768), 20 states have internal predecessors, (3768), 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 20:40:17,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 504.0) internal successors, (10584), 21 states have internal predecessors, (10584), 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 20:40:17,696 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 504.0) internal successors, (10584), 21 states have internal predecessors, (10584), 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 20:40:17,696 INFO L175 Difference]: Start difference. First operand has 202 places, 351 transitions, 4767 flow. Second operand 20 states and 3768 transitions. [2023-08-25 20:40:17,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 690 transitions, 10055 flow [2023-08-25 20:40:17,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 690 transitions, 9360 flow, removed 344 selfloop flow, removed 3 redundant places. [2023-08-25 20:40:17,943 INFO L231 Difference]: Finished difference. Result has 228 places, 382 transitions, 5199 flow [2023-08-25 20:40:17,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=4030, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5199, PETRI_PLACES=228, PETRI_TRANSITIONS=382} [2023-08-25 20:40:17,943 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 141 predicate places. [2023-08-25 20:40:17,944 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 382 transitions, 5199 flow [2023-08-25 20:40:17,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 181.89473684210526) internal successors, (3456), 19 states have internal predecessors, (3456), 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 20:40:17,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:17,944 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:40:17,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:18,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:18,149 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:18,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash -586229044, now seen corresponding path program 11 times [2023-08-25 20:40:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820551737] [2023-08-25 20:40:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:40:18,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:18,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820551737] [2023-08-25 20:40:18,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820551737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:18,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688938816] [2023-08-25 20:40:18,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:40:18,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:18,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:18,293 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:18,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 20:40:18,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 20:40:18,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:18,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 20:40:18,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:40:18,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:40:18,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688938816] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:18,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:18,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-08-25 20:40:18,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901096328] [2023-08-25 20:40:18,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:18,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 20:40:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:18,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 20:40:18,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-08-25 20:40:18,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-25 20:40:18,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 382 transitions, 5199 flow. Second operand has 18 states, 18 states have (on average 185.61111111111111) internal successors, (3341), 18 states have internal predecessors, (3341), 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 20:40:18,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:18,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-25 20:40:18,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:21,501 INFO L124 PetriNetUnfolderBase]: 3942/8501 cut-off events. [2023-08-25 20:40:21,501 INFO L125 PetriNetUnfolderBase]: For 160810/161451 co-relation queries the response was YES. [2023-08-25 20:40:21,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51646 conditions, 8501 events. 3942/8501 cut-off events. For 160810/161451 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 74126 event pairs, 364 based on Foata normal form. 530/8877 useless extension candidates. Maximal degree in co-relation 51571. Up to 1456 conditions per place. [2023-08-25 20:40:21,744 INFO L140 encePairwiseOnDemand]: 494/504 looper letters, 455 selfloop transitions, 328 changer transitions 34/855 dead transitions. [2023-08-25 20:40:21,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 855 transitions, 13658 flow [2023-08-25 20:40:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-25 20:40:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-25 20:40:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8369 transitions. [2023-08-25 20:40:21,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37738997113997114 [2023-08-25 20:40:21,751 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8369 transitions. [2023-08-25 20:40:21,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8369 transitions. [2023-08-25 20:40:21,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:21,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8369 transitions. [2023-08-25 20:40:21,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 190.20454545454547) internal successors, (8369), 44 states have internal predecessors, (8369), 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 20:40:21,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 504.0) internal successors, (22680), 45 states have internal predecessors, (22680), 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 20:40:21,777 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 504.0) internal successors, (22680), 45 states have internal predecessors, (22680), 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 20:40:21,778 INFO L175 Difference]: Start difference. First operand has 228 places, 382 transitions, 5199 flow. Second operand 44 states and 8369 transitions. [2023-08-25 20:40:21,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 855 transitions, 13658 flow [2023-08-25 20:40:22,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 855 transitions, 13330 flow, removed 153 selfloop flow, removed 5 redundant places. [2023-08-25 20:40:22,117 INFO L231 Difference]: Finished difference. Result has 283 places, 507 transitions, 8438 flow [2023-08-25 20:40:22,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=4707, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=8438, PETRI_PLACES=283, PETRI_TRANSITIONS=507} [2023-08-25 20:40:22,118 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 196 predicate places. [2023-08-25 20:40:22,118 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 507 transitions, 8438 flow [2023-08-25 20:40:22,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 185.61111111111111) internal successors, (3341), 18 states have internal predecessors, (3341), 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 20:40:22,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:22,119 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] [2023-08-25 20:40:22,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:22,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:22,325 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:22,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 881014901, now seen corresponding path program 1 times [2023-08-25 20:40:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:22,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745554904] [2023-08-25 20:40:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:22,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:22,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:22,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745554904] [2023-08-25 20:40:22,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745554904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171587423] [2023-08-25 20:40:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:22,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:22,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:22,453 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:22,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 20:40:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:22,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 20:40:22,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:22,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171587423] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:22,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-25 20:40:22,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432196405] [2023-08-25 20:40:22,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:22,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 20:40:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:22,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 20:40:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-25 20:40:22,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 504 [2023-08-25 20:40:22,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 507 transitions, 8438 flow. Second operand has 12 states, 12 states have (on average 189.16666666666666) internal successors, (2270), 12 states have internal predecessors, (2270), 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 20:40:22,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:22,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 504 [2023-08-25 20:40:22,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:24,340 INFO L124 PetriNetUnfolderBase]: 3395/7750 cut-off events. [2023-08-25 20:40:24,341 INFO L125 PetriNetUnfolderBase]: For 211709/212514 co-relation queries the response was YES. [2023-08-25 20:40:24,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50375 conditions, 7750 events. 3395/7750 cut-off events. For 211709/212514 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 69401 event pairs, 1087 based on Foata normal form. 329/7845 useless extension candidates. Maximal degree in co-relation 50282. Up to 3686 conditions per place. [2023-08-25 20:40:24,442 INFO L140 encePairwiseOnDemand]: 498/504 looper letters, 291 selfloop transitions, 3 changer transitions 170/495 dead transitions. [2023-08-25 20:40:24,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 495 transitions, 8947 flow [2023-08-25 20:40:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:40:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:40:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1174 transitions. [2023-08-25 20:40:24,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38822751322751325 [2023-08-25 20:40:24,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1174 transitions. [2023-08-25 20:40:24,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1174 transitions. [2023-08-25 20:40:24,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:24,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1174 transitions. [2023-08-25 20:40:24,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 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 20:40:24,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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 20:40:24,449 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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 20:40:24,449 INFO L175 Difference]: Start difference. First operand has 283 places, 507 transitions, 8438 flow. Second operand 6 states and 1174 transitions. [2023-08-25 20:40:24,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 495 transitions, 8947 flow [2023-08-25 20:40:25,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 495 transitions, 7831 flow, removed 357 selfloop flow, removed 19 redundant places. [2023-08-25 20:40:25,488 INFO L231 Difference]: Finished difference. Result has 266 places, 325 transitions, 4976 flow [2023-08-25 20:40:25,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=6465, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4976, PETRI_PLACES=266, PETRI_TRANSITIONS=325} [2023-08-25 20:40:25,489 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 179 predicate places. [2023-08-25 20:40:25,489 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 325 transitions, 4976 flow [2023-08-25 20:40:25,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.16666666666666) internal successors, (2270), 12 states have internal predecessors, (2270), 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 20:40:25,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:25,489 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-25 20:40:25,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:25,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-25 20:40:25,690 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:25,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1969284774, now seen corresponding path program 12 times [2023-08-25 20:40:25,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:25,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779774484] [2023-08-25 20:40:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:25,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:40:25,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779774484] [2023-08-25 20:40:25,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779774484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534984731] [2023-08-25 20:40:25,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:40:25,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:25,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:25,865 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:25,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 20:40:26,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 20:40:26,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:26,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:40:26,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:40:26,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:40:26,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534984731] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:26,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:26,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-08-25 20:40:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012581691] [2023-08-25 20:40:26,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:26,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 20:40:26,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 20:40:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-08-25 20:40:26,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-25 20:40:26,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 325 transitions, 4976 flow. Second operand has 19 states, 19 states have (on average 185.3684210526316) internal successors, (3522), 19 states have internal predecessors, (3522), 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 20:40:26,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:26,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-25 20:40:26,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:27,655 INFO L124 PetriNetUnfolderBase]: 2600/5339 cut-off events. [2023-08-25 20:40:27,655 INFO L125 PetriNetUnfolderBase]: For 144484/145080 co-relation queries the response was YES. [2023-08-25 20:40:27,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36535 conditions, 5339 events. 2600/5339 cut-off events. For 144484/145080 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 40532 event pairs, 428 based on Foata normal form. 210/5435 useless extension candidates. Maximal degree in co-relation 36455. Up to 1575 conditions per place. [2023-08-25 20:40:27,724 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 393 selfloop transitions, 88 changer transitions 0/512 dead transitions. [2023-08-25 20:40:27,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 512 transitions, 8778 flow [2023-08-25 20:40:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 20:40:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 20:40:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1903 transitions. [2023-08-25 20:40:27,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37757936507936507 [2023-08-25 20:40:27,726 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1903 transitions. [2023-08-25 20:40:27,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1903 transitions. [2023-08-25 20:40:27,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:27,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1903 transitions. [2023-08-25 20:40:27,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.3) internal successors, (1903), 10 states have internal predecessors, (1903), 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 20:40:27,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:40:27,733 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:40:27,733 INFO L175 Difference]: Start difference. First operand has 266 places, 325 transitions, 4976 flow. Second operand 10 states and 1903 transitions. [2023-08-25 20:40:27,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 512 transitions, 8778 flow [2023-08-25 20:40:28,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 512 transitions, 7823 flow, removed 342 selfloop flow, removed 17 redundant places. [2023-08-25 20:40:28,117 INFO L231 Difference]: Finished difference. Result has 203 places, 340 transitions, 4990 flow [2023-08-25 20:40:28,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4990, PETRI_PLACES=203, PETRI_TRANSITIONS=340} [2023-08-25 20:40:28,118 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 116 predicate places. [2023-08-25 20:40:28,118 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 340 transitions, 4990 flow [2023-08-25 20:40:28,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 185.3684210526316) internal successors, (3522), 19 states have internal predecessors, (3522), 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 20:40:28,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:28,119 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-25 20:40:28,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:28,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:28,319 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:28,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1138730140, now seen corresponding path program 13 times [2023-08-25 20:40:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:28,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841894723] [2023-08-25 20:40:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:28,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:28,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:28,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841894723] [2023-08-25 20:40:28,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841894723] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:28,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396024927] [2023-08-25 20:40:28,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:40:28,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:28,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:28,501 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:28,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 20:40:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:28,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:40:28,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:28,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:28,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396024927] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:28,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:28,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-25 20:40:28,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081346606] [2023-08-25 20:40:28,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:28,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:40:28,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:28,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:40:28,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:40:28,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-25 20:40:28,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 340 transitions, 4990 flow. Second operand has 20 states, 20 states have (on average 185.1) internal successors, (3702), 20 states have internal predecessors, (3702), 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 20:40:28,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:28,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-25 20:40:28,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:30,308 INFO L124 PetriNetUnfolderBase]: 2680/5686 cut-off events. [2023-08-25 20:40:30,308 INFO L125 PetriNetUnfolderBase]: For 128751/129397 co-relation queries the response was YES. [2023-08-25 20:40:30,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35570 conditions, 5686 events. 2680/5686 cut-off events. For 128751/129397 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 45042 event pairs, 693 based on Foata normal form. 177/5690 useless extension candidates. Maximal degree in co-relation 35500. Up to 3112 conditions per place. [2023-08-25 20:40:30,369 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 365 selfloop transitions, 78 changer transitions 0/474 dead transitions. [2023-08-25 20:40:30,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 474 transitions, 7734 flow [2023-08-25 20:40:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 20:40:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 20:40:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1897 transitions. [2023-08-25 20:40:30,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763888888888889 [2023-08-25 20:40:30,372 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1897 transitions. [2023-08-25 20:40:30,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1897 transitions. [2023-08-25 20:40:30,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:30,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1897 transitions. [2023-08-25 20:40:30,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 189.7) internal successors, (1897), 10 states have internal predecessors, (1897), 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 20:40:30,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:40:30,378 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:40:30,378 INFO L175 Difference]: Start difference. First operand has 203 places, 340 transitions, 4990 flow. Second operand 10 states and 1897 transitions. [2023-08-25 20:40:30,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 474 transitions, 7734 flow [2023-08-25 20:40:30,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 474 transitions, 7612 flow, removed 28 selfloop flow, removed 6 redundant places. [2023-08-25 20:40:30,713 INFO L231 Difference]: Finished difference. Result has 208 places, 371 transitions, 5683 flow [2023-08-25 20:40:30,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=4904, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5683, PETRI_PLACES=208, PETRI_TRANSITIONS=371} [2023-08-25 20:40:30,714 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 121 predicate places. [2023-08-25 20:40:30,714 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 371 transitions, 5683 flow [2023-08-25 20:40:30,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 185.1) internal successors, (3702), 20 states have internal predecessors, (3702), 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 20:40:30,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:30,715 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-25 20:40:30,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:30,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:30,915 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:30,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash -701857656, now seen corresponding path program 14 times [2023-08-25 20:40:30,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915004410] [2023-08-25 20:40:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:30,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:31,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915004410] [2023-08-25 20:40:31,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915004410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:31,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890110567] [2023-08-25 20:40:31,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:40:31,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:31,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:31,104 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:31,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 20:40:31,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:40:31,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:31,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:40:31,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:31,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:40:31,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890110567] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:31,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:31,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-08-25 20:40:31,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619708927] [2023-08-25 20:40:31,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:31,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 20:40:31,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 20:40:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-08-25 20:40:31,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-25 20:40:31,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 371 transitions, 5683 flow. Second operand has 21 states, 21 states have (on average 185.14285714285714) internal successors, (3888), 21 states have internal predecessors, (3888), 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 20:40:31,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:31,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-25 20:40:31,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:33,032 INFO L124 PetriNetUnfolderBase]: 3094/6424 cut-off events. [2023-08-25 20:40:33,032 INFO L125 PetriNetUnfolderBase]: For 155370/156117 co-relation queries the response was YES. [2023-08-25 20:40:33,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42375 conditions, 6424 events. 3094/6424 cut-off events. For 155370/156117 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 51361 event pairs, 722 based on Foata normal form. 219/6459 useless extension candidates. Maximal degree in co-relation 42303. Up to 3272 conditions per place. [2023-08-25 20:40:33,110 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 459 selfloop transitions, 126 changer transitions 0/616 dead transitions. [2023-08-25 20:40:33,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 616 transitions, 10225 flow [2023-08-25 20:40:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 20:40:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 20:40:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2860 transitions. [2023-08-25 20:40:33,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2023-08-25 20:40:33,114 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2860 transitions. [2023-08-25 20:40:33,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2860 transitions. [2023-08-25 20:40:33,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:33,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2860 transitions. [2023-08-25 20:40:33,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 190.66666666666666) internal successors, (2860), 15 states have internal predecessors, (2860), 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 20:40:33,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 504.0) internal successors, (8064), 16 states have internal predecessors, (8064), 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 20:40:33,123 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 504.0) internal successors, (8064), 16 states have internal predecessors, (8064), 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 20:40:33,123 INFO L175 Difference]: Start difference. First operand has 208 places, 371 transitions, 5683 flow. Second operand 15 states and 2860 transitions. [2023-08-25 20:40:33,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 616 transitions, 10225 flow [2023-08-25 20:40:33,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 616 transitions, 10059 flow, removed 78 selfloop flow, removed 5 redundant places. [2023-08-25 20:40:33,709 INFO L231 Difference]: Finished difference. Result has 220 places, 419 transitions, 6831 flow [2023-08-25 20:40:33,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6831, PETRI_PLACES=220, PETRI_TRANSITIONS=419} [2023-08-25 20:40:33,710 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 133 predicate places. [2023-08-25 20:40:33,710 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 419 transitions, 6831 flow [2023-08-25 20:40:33,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 185.14285714285714) internal successors, (3888), 21 states have internal predecessors, (3888), 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 20:40:33,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:33,711 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-25 20:40:33,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:33,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-25 20:40:33,911 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:33,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1165307956, now seen corresponding path program 15 times [2023-08-25 20:40:33,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:33,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262210236] [2023-08-25 20:40:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:33,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:40:34,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:34,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262210236] [2023-08-25 20:40:34,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262210236] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:34,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764276773] [2023-08-25 20:40:34,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:40:34,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:34,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:34,100 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:34,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 20:40:34,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 20:40:34,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:34,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:40:34,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:40:34,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:40:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764276773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:35,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-08-25 20:40:35,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541455651] [2023-08-25 20:40:35,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:35,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 20:40:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 20:40:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-08-25 20:40:35,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-25 20:40:35,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 419 transitions, 6831 flow. Second operand has 22 states, 22 states have (on average 185.36363636363637) internal successors, (4078), 22 states have internal predecessors, (4078), 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 20:40:35,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:35,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-25 20:40:35,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:36,455 INFO L124 PetriNetUnfolderBase]: 3066/6326 cut-off events. [2023-08-25 20:40:36,456 INFO L125 PetriNetUnfolderBase]: For 178095/178999 co-relation queries the response was YES. [2023-08-25 20:40:36,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43853 conditions, 6326 events. 3066/6326 cut-off events. For 178095/178999 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 50211 event pairs, 698 based on Foata normal form. 264/6403 useless extension candidates. Maximal degree in co-relation 43779. Up to 3272 conditions per place. [2023-08-25 20:40:36,547 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 404 selfloop transitions, 124 changer transitions 0/559 dead transitions. [2023-08-25 20:40:36,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 559 transitions, 9796 flow [2023-08-25 20:40:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 20:40:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 20:40:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2282 transitions. [2023-08-25 20:40:36,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773148148148148 [2023-08-25 20:40:36,550 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2282 transitions. [2023-08-25 20:40:36,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2282 transitions. [2023-08-25 20:40:36,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:36,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2282 transitions. [2023-08-25 20:40:36,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.16666666666666) internal successors, (2282), 12 states have internal predecessors, (2282), 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 20:40:36,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 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 20:40:36,555 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 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 20:40:36,555 INFO L175 Difference]: Start difference. First operand has 220 places, 419 transitions, 6831 flow. Second operand 12 states and 2282 transitions. [2023-08-25 20:40:36,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 559 transitions, 9796 flow [2023-08-25 20:40:37,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 559 transitions, 9304 flow, removed 197 selfloop flow, removed 7 redundant places. [2023-08-25 20:40:37,095 INFO L231 Difference]: Finished difference. Result has 223 places, 418 transitions, 6566 flow [2023-08-25 20:40:37,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6566, PETRI_PLACES=223, PETRI_TRANSITIONS=418} [2023-08-25 20:40:37,095 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 136 predicate places. [2023-08-25 20:40:37,096 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 418 transitions, 6566 flow [2023-08-25 20:40:37,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 185.36363636363637) internal successors, (4078), 22 states have internal predecessors, (4078), 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 20:40:37,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:37,096 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-25 20:40:37,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:37,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:37,297 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:37,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1105351416, now seen corresponding path program 16 times [2023-08-25 20:40:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053435817] [2023-08-25 20:40:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:40:37,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053435817] [2023-08-25 20:40:37,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053435817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:37,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712193431] [2023-08-25 20:40:37,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:40:37,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:37,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:37,455 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:37,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 20:40:37,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:40:37,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:37,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 20:40:37,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:40:37,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:40:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712193431] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:37,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 20:40:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269795602] [2023-08-25 20:40:37,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:37,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:40:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:40:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:40:37,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 504 [2023-08-25 20:40:37,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 418 transitions, 6566 flow. Second operand has 20 states, 20 states have (on average 181.4) internal successors, (3628), 20 states have internal predecessors, (3628), 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 20:40:37,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:37,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 504 [2023-08-25 20:40:37,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:40,871 INFO L124 PetriNetUnfolderBase]: 4467/8654 cut-off events. [2023-08-25 20:40:40,872 INFO L125 PetriNetUnfolderBase]: For 262098/263169 co-relation queries the response was YES. [2023-08-25 20:40:40,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63748 conditions, 8654 events. 4467/8654 cut-off events. For 262098/263169 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 67753 event pairs, 209 based on Foata normal form. 262/8852 useless extension candidates. Maximal degree in co-relation 63674. Up to 2219 conditions per place. [2023-08-25 20:40:40,980 INFO L140 encePairwiseOnDemand]: 492/504 looper letters, 366 selfloop transitions, 504 changer transitions 0/888 dead transitions. [2023-08-25 20:40:40,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 888 transitions, 15740 flow [2023-08-25 20:40:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-25 20:40:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-25 20:40:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8191 transitions. [2023-08-25 20:40:40,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693632756132756 [2023-08-25 20:40:40,986 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8191 transitions. [2023-08-25 20:40:40,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8191 transitions. [2023-08-25 20:40:40,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:40,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8191 transitions. [2023-08-25 20:40:40,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 186.1590909090909) internal successors, (8191), 44 states have internal predecessors, (8191), 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 20:40:41,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 504.0) internal successors, (22680), 45 states have internal predecessors, (22680), 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 20:40:41,011 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 504.0) internal successors, (22680), 45 states have internal predecessors, (22680), 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 20:40:41,011 INFO L175 Difference]: Start difference. First operand has 223 places, 418 transitions, 6566 flow. Second operand 44 states and 8191 transitions. [2023-08-25 20:40:41,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 888 transitions, 15740 flow [2023-08-25 20:40:41,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 888 transitions, 15388 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-25 20:40:41,825 INFO L231 Difference]: Finished difference. Result has 267 places, 649 transitions, 12611 flow [2023-08-25 20:40:41,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12611, PETRI_PLACES=267, PETRI_TRANSITIONS=649} [2023-08-25 20:40:41,825 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 180 predicate places. [2023-08-25 20:40:41,825 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 649 transitions, 12611 flow [2023-08-25 20:40:41,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 181.4) internal successors, (3628), 20 states have internal predecessors, (3628), 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 20:40:41,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:41,826 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-25 20:40:41,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:42,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:42,026 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:42,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1216643114, now seen corresponding path program 17 times [2023-08-25 20:40:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:42,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727131118] [2023-08-25 20:40:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:42,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:42,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:40:42,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:42,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727131118] [2023-08-25 20:40:42,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727131118] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:42,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600777452] [2023-08-25 20:40:42,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:40:42,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:42,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:42,193 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:42,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 20:40:42,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 20:40:42,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:42,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:40:42,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:40:42,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:40:42,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600777452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:42,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:42,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-08-25 20:40:42,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108200481] [2023-08-25 20:40:42,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:42,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 20:40:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 20:40:42,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-08-25 20:40:42,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-25 20:40:42,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 649 transitions, 12611 flow. Second operand has 21 states, 21 states have (on average 185.0) internal successors, (3885), 21 states have internal predecessors, (3885), 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 20:40:42,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:42,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-25 20:40:42,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:45,024 INFO L124 PetriNetUnfolderBase]: 4351/8604 cut-off events. [2023-08-25 20:40:45,025 INFO L125 PetriNetUnfolderBase]: For 306279/307562 co-relation queries the response was YES. [2023-08-25 20:40:45,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66661 conditions, 8604 events. 4351/8604 cut-off events. For 306279/307562 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 69161 event pairs, 533 based on Foata normal form. 268/8743 useless extension candidates. Maximal degree in co-relation 66575. Up to 2695 conditions per place. [2023-08-25 20:40:45,152 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 401 selfloop transitions, 368 changer transitions 0/811 dead transitions. [2023-08-25 20:40:45,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 811 transitions, 15574 flow [2023-08-25 20:40:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 20:40:45,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 20:40:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3639 transitions. [2023-08-25 20:40:45,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3800125313283208 [2023-08-25 20:40:45,156 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3639 transitions. [2023-08-25 20:40:45,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3639 transitions. [2023-08-25 20:40:45,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:45,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3639 transitions. [2023-08-25 20:40:45,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 191.52631578947367) internal successors, (3639), 19 states have internal predecessors, (3639), 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 20:40:45,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 504.0) internal successors, (10080), 20 states have internal predecessors, (10080), 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 20:40:45,167 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 504.0) internal successors, (10080), 20 states have internal predecessors, (10080), 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 20:40:45,168 INFO L175 Difference]: Start difference. First operand has 267 places, 649 transitions, 12611 flow. Second operand 19 states and 3639 transitions. [2023-08-25 20:40:45,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 811 transitions, 15574 flow [2023-08-25 20:40:46,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 811 transitions, 13085 flow, removed 1224 selfloop flow, removed 6 redundant places. [2023-08-25 20:40:46,854 INFO L231 Difference]: Finished difference. Result has 278 places, 642 transitions, 10716 flow [2023-08-25 20:40:46,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=9762, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10716, PETRI_PLACES=278, PETRI_TRANSITIONS=642} [2023-08-25 20:40:46,855 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 191 predicate places. [2023-08-25 20:40:46,855 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 642 transitions, 10716 flow [2023-08-25 20:40:46,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 185.0) internal successors, (3885), 21 states have internal predecessors, (3885), 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 20:40:46,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:46,855 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-25 20:40:46,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:47,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:47,057 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:47,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -220893808, now seen corresponding path program 18 times [2023-08-25 20:40:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536735169] [2023-08-25 20:40:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:47,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:40:47,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:47,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536735169] [2023-08-25 20:40:47,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536735169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:47,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915605968] [2023-08-25 20:40:47,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:40:47,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:47,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:47,228 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:47,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 20:40:47,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 20:40:47,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:47,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:40:47,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:40:47,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:40:47,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915605968] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:40:47,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:40:47,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-25 20:40:47,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381015247] [2023-08-25 20:40:47,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:40:47,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:40:47,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:40:47,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:40:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:40:47,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-25 20:40:47,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 642 transitions, 10716 flow. Second operand has 20 states, 20 states have (on average 185.05) internal successors, (3701), 20 states have internal predecessors, (3701), 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 20:40:47,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:40:47,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-25 20:40:47,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:40:49,796 INFO L124 PetriNetUnfolderBase]: 4362/8615 cut-off events. [2023-08-25 20:40:49,797 INFO L125 PetriNetUnfolderBase]: For 176705/177962 co-relation queries the response was YES. [2023-08-25 20:40:49,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57690 conditions, 8615 events. 4362/8615 cut-off events. For 176705/177962 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 69416 event pairs, 681 based on Foata normal form. 138/8586 useless extension candidates. Maximal degree in co-relation 57603. Up to 3191 conditions per place. [2023-08-25 20:40:49,919 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 337 selfloop transitions, 309 changer transitions 0/687 dead transitions. [2023-08-25 20:40:49,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 687 transitions, 12382 flow [2023-08-25 20:40:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 20:40:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 20:40:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1902 transitions. [2023-08-25 20:40:49,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773809523809524 [2023-08-25 20:40:49,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1902 transitions. [2023-08-25 20:40:49,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1902 transitions. [2023-08-25 20:40:49,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:40:49,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1902 transitions. [2023-08-25 20:40:49,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.2) internal successors, (1902), 10 states have internal predecessors, (1902), 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 20:40:49,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:40:49,925 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 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 20:40:49,925 INFO L175 Difference]: Start difference. First operand has 278 places, 642 transitions, 10716 flow. Second operand 10 states and 1902 transitions. [2023-08-25 20:40:49,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 687 transitions, 12382 flow [2023-08-25 20:40:50,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 687 transitions, 11598 flow, removed 29 selfloop flow, removed 18 redundant places. [2023-08-25 20:40:50,635 INFO L231 Difference]: Finished difference. Result has 268 places, 637 transitions, 10454 flow [2023-08-25 20:40:50,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=9836, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10454, PETRI_PLACES=268, PETRI_TRANSITIONS=637} [2023-08-25 20:40:50,635 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 181 predicate places. [2023-08-25 20:40:50,636 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 637 transitions, 10454 flow [2023-08-25 20:40:50,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 185.05) internal successors, (3701), 20 states have internal predecessors, (3701), 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 20:40:50,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:40:50,636 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:40:50,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 20:40:50,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-25 20:40:50,841 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 20:40:50,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:40:50,841 INFO L85 PathProgramCache]: Analyzing trace with hash -754192334, now seen corresponding path program 2 times [2023-08-25 20:40:50,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:40:50,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093194346] [2023-08-25 20:40:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:40:50,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:40:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:40:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:40:52,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:40:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093194346] [2023-08-25 20:40:52,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093194346] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:40:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800352454] [2023-08-25 20:40:52,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:40:52,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:40:52,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:40:52,272 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:40:52,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 20:40:52,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:40:52,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:40:52,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 20:40:52,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:40:52,878 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 20:40:52,886 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 20:40:53,029 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 0 case distinctions, treesize of input 54 treesize of output 67 [2023-08-25 20:40:53,100 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:53,101 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:40:53,107 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 8 treesize of output 1 [2023-08-25 20:40:53,120 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 8 treesize of output 1 [2023-08-25 20:40:53,125 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:53,126 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:40:54,570 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 0 case distinctions, treesize of input 60 treesize of output 73 [2023-08-25 20:40:54,589 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:54,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 107 [2023-08-25 20:40:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:40:55,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:40:55,472 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:55,472 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 75 treesize of output 91 [2023-08-25 20:40:55,484 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:55,484 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:40:59,663 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:59,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 785 treesize of output 1209 [2023-08-25 20:40:59,843 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:40:59,844 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 51 treesize of output 67 [2023-08-25 20:41:05,824 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-25 20:41:06,986 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-25 20:41:39,339 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-25 20:43:25,041 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-25 20:44:21,465 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-25 20:46:24,644 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. Received shutdown request... [2023-08-25 20:52:34,043 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-25 20:52:34,047 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONASSERT (63 of 64 remaining) [2023-08-25 20:52:34,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 20:52:34,062 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 20:52:34,063 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 20:52:34,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-25 20:52:34,254 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. [2023-08-25 20:52:34,255 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (62 of 64 remaining) [2023-08-25 20:52:34,255 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (61 of 64 remaining) [2023-08-25 20:52:34,255 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (60 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (59 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (58 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (57 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (56 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (55 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (54 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (53 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (52 of 64 remaining) [2023-08-25 20:52:34,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (51 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (50 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (49 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONDATA_RACE (48 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONDATA_RACE (47 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONDATA_RACE (46 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONDATA_RACE (45 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4ASSERT_VIOLATIONDATA_RACE (44 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5ASSERT_VIOLATIONDATA_RACE (43 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6ASSERT_VIOLATIONDATA_RACE (42 of 64 remaining) [2023-08-25 20:52:34,257 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7ASSERT_VIOLATIONDATA_RACE (41 of 64 remaining) [2023-08-25 20:52:34,258 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (40 of 64 remaining) [2023-08-25 20:52:34,258 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (39 of 64 remaining) [2023-08-25 20:52:34,258 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (38 of 64 remaining) [2023-08-25 20:52:34,258 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (37 of 64 remaining) [2023-08-25 20:52:34,258 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (36 of 64 remaining) [2023-08-25 20:52:34,258 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (35 of 64 remaining) [2023-08-25 20:52:34,258 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (34 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (33 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (32 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (31 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (30 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (29 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (28 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (27 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (26 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (25 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 64 remaining) [2023-08-25 20:52:34,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (21 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (20 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (19 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (18 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (17 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (16 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (15 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (14 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (13 of 64 remaining) [2023-08-25 20:52:34,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (12 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (11 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (10 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (9 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (8 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONDATA_RACE (7 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONDATA_RACE (6 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONDATA_RACE (5 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONDATA_RACE (4 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4ASSERT_VIOLATIONDATA_RACE (3 of 64 remaining) [2023-08-25 20:52:34,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5ASSERT_VIOLATIONDATA_RACE (2 of 64 remaining) [2023-08-25 20:52:34,262 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6ASSERT_VIOLATIONDATA_RACE (1 of 64 remaining) [2023-08-25 20:52:34,262 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7ASSERT_VIOLATIONDATA_RACE (0 of 64 remaining) [2023-08-25 20:52:34,262 INFO L445 BasicCegarLoop]: Path program histogram: [18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:52:34,267 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 20:52:34,267 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 20:52:34,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:52:34 BasicIcfg [2023-08-25 20:52:34,272 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 20:52:34,273 INFO L158 Benchmark]: Toolchain (without parser) took 832226.76ms. Allocated memory was 381.7MB in the beginning and 2.4GB in the end (delta: 2.0GB). Free memory was 358.1MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-25 20:52:34,273 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 381.7MB. Free memory is still 358.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 20:52:34,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.82ms. Allocated memory is still 381.7MB. Free memory was 357.6MB in the beginning and 345.2MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 20:52:34,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.43ms. Allocated memory is still 381.7MB. Free memory was 345.2MB in the beginning and 343.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 20:52:34,277 INFO L158 Benchmark]: Boogie Preprocessor took 51.20ms. Allocated memory is still 381.7MB. Free memory was 343.2MB in the beginning and 340.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 20:52:34,277 INFO L158 Benchmark]: RCFGBuilder took 875.45ms. Allocated memory is still 381.7MB. Free memory was 340.6MB in the beginning and 336.3MB in the end (delta: 4.3MB). Peak memory consumption was 40.0MB. Max. memory is 16.0GB. [2023-08-25 20:52:34,277 INFO L158 Benchmark]: TraceAbstraction took 830929.09ms. Allocated memory was 381.7MB in the beginning and 2.4GB in the end (delta: 2.0GB). Free memory was 336.1MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-25 20:52:34,278 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 381.7MB. Free memory is still 358.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 302.82ms. Allocated memory is still 381.7MB. Free memory was 357.6MB in the beginning and 345.2MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.43ms. Allocated memory is still 381.7MB. Free memory was 345.2MB in the beginning and 343.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 51.20ms. Allocated memory is still 381.7MB. Free memory was 343.2MB in the beginning and 340.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 875.45ms. Allocated memory is still 381.7MB. Free memory was 340.6MB in the beginning and 336.3MB in the end (delta: 4.3MB). Peak memory consumption was 40.0MB. Max. memory is 16.0GB. * TraceAbstraction took 830929.09ms. Allocated memory was 381.7MB in the beginning and 2.4GB in the end (delta: 2.0GB). Free memory was 336.1MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.9s, 240 PlacesBefore, 87 PlacesAfterwards, 244 TransitionsBefore, 84 TransitionsAfterwards, 5682 CoEnabledTransitionPairs, 8 FixpointIterations, 152 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 8 ConcurrentYvCompositions, 7 ChoiceCompositions, 246 TotalNumberOfCompositions, 35801 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12238, independent: 11438, independent conditional: 0, independent unconditional: 11438, dependent: 800, dependent conditional: 0, dependent unconditional: 800, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2902, independent: 2776, independent conditional: 0, independent unconditional: 2776, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12238, independent: 8662, independent conditional: 0, independent unconditional: 8662, dependent: 674, dependent conditional: 0, dependent unconditional: 674, unknown: 2902, unknown conditional: 0, unknown unconditional: 2902] , Statistics on independence cache: Total cache size (in pairs): 626, Positive cache size: 562, Positive conditional cache size: 0, Positive unconditional cache size: 562, Negative cache size: 64, Negative conditional cache size: 0, Negative unconditional cache size: 64, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 38ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 308 locations, 64 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 830.8s, OverallIterations: 29, TraceHistogramMax: 3, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 48.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.1s, HoareTripleCheckerStatistics: 44 mSolverCounterUnknown, 3706 SdHoareTripleChecker+Valid, 13.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3706 mSDsluCounter, 2295 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 372 IncrementalHoareTripleChecker+Unchecked, 2021 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13090 IncrementalHoareTripleChecker+Invalid, 13679 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 274 mSDtfsCounter, 13090 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2134 GetRequests, 1489 SyntacticMatches, 40 SemanticMatches, 605 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4951 ImplicationChecksByTransitivity, 41.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12611occurred in iteration=26, InterpolantAutomatonStates: 375, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 56.9s InterpolantComputationTime, 1893 NumberOfCodeBlocks, 1879 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 2702 ConstructedInterpolants, 20 QuantifiedInterpolants, 33394 SizeOfPredicates, 228 NumberOfNonLiveVariables, 7784 ConjunctsInSsa, 357 ConjunctsInUnsatCore, 68 InterpolantComputations, 9 PerfectInterpolantSequences, 240/487 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown