/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 02:50:16,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 02:50:16,407 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 [2023-08-24 02:50:16,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 02:50:16,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 02:50:16,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 02:50:16,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 02:50:16,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 02:50:16,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 02:50:16,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 02:50:16,432 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 02:50:16,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 02:50:16,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 02:50:16,433 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 02:50:16,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 02:50:16,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 02:50:16,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 02:50:16,435 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 02:50:16,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 02:50:16,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 02:50:16,436 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 02:50:16,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 02:50:16,436 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 02:50:16,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 02:50:16,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 02:50:16,437 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 02:50:16,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 02:50:16,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 02:50:16,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 02:50:16,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 02:50:16,439 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 02:50:16,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 02:50:16,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 02:50:16,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 02:50:16,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 02:50:16,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 02:50:16,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 02:50:16,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 02:50:16,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 02:50:16,750 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 02:50:16,750 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 02:50:16,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-08-24 02:50:17,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 02:50:18,183 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 02:50:18,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-08-24 02:50:18,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ff275940/bd2e14ede3304bd2941db21a4553ace4/FLAG6b3ae8abc [2023-08-24 02:50:18,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ff275940/bd2e14ede3304bd2941db21a4553ace4 [2023-08-24 02:50:18,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 02:50:18,217 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 02:50:18,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 02:50:18,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 02:50:18,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 02:50:18,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1770d9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18, skipping insertion in model container [2023-08-24 02:50:18,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,255 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 02:50:18,434 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-08-24 02:50:18,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 02:50:18,453 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 02:50:18,497 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-08-24 02:50:18,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 02:50:18,510 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 02:50:18,510 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 02:50:18,516 INFO L206 MainTranslator]: Completed translation [2023-08-24 02:50:18,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18 WrapperNode [2023-08-24 02:50:18,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 02:50:18,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 02:50:18,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 02:50:18,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 02:50:18,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,565 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 357 [2023-08-24 02:50:18,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 02:50:18,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 02:50:18,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 02:50:18,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 02:50:18,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 02:50:18,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 02:50:18,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 02:50:18,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 02:50:18,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (1/1) ... [2023-08-24 02:50:18,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 02:50:18,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:50:18,632 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) [2023-08-24 02:50:18,638 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 [2023-08-24 02:50:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 02:50:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 02:50:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 02:50:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 02:50:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 02:50:18,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 02:50:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 02:50:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 02:50:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 02:50:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 02:50:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-24 02:50:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-24 02:50:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 02:50:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 02:50:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 02:50:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 02:50:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 02:50:18,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 02:50:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 02:50:18,671 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 02:50:18,782 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 02:50:18,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 02:50:19,193 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 02:50:19,394 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 02:50:19,394 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-24 02:50:19,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:50:19 BoogieIcfgContainer [2023-08-24 02:50:19,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 02:50:19,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 02:50:19,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 02:50:19,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 02:50:19,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 02:50:18" (1/3) ... [2023-08-24 02:50:19,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c32277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:50:19, skipping insertion in model container [2023-08-24 02:50:19,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:50:18" (2/3) ... [2023-08-24 02:50:19,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c32277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:50:19, skipping insertion in model container [2023-08-24 02:50:19,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:50:19" (3/3) ... [2023-08-24 02:50:19,404 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-08-24 02:50:19,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 02:50:19,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 02:50:19,419 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 02:50:19,492 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 02:50:19,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 254 transitions, 540 flow [2023-08-24 02:50:19,642 INFO L124 PetriNetUnfolderBase]: 22/250 cut-off events. [2023-08-24 02:50:19,642 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 02:50:19,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 250 events. 22/250 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 134 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2023-08-24 02:50:19,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 254 transitions, 540 flow [2023-08-24 02:50:19,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 238 transitions, 500 flow [2023-08-24 02:50:19,659 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 02:50:19,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 238 transitions, 500 flow [2023-08-24 02:50:19,667 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 238 transitions, 500 flow [2023-08-24 02:50:19,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 238 transitions, 500 flow [2023-08-24 02:50:19,714 INFO L124 PetriNetUnfolderBase]: 22/238 cut-off events. [2023-08-24 02:50:19,714 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 02:50:19,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 238 events. 22/238 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2023-08-24 02:50:19,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-08-24 02:50:28,177 INFO L134 LiptonReduction]: Checked pairs total: 2788 [2023-08-24 02:50:28,177 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-08-24 02:50:28,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 02:50:28,193 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;@68c28a47, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 02:50:28,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 02:50:28,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 02:50:28,202 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2023-08-24 02:50:28,202 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 02:50:28,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:28,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:28,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:28,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash -500353073, now seen corresponding path program 1 times [2023-08-24 02:50:28,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:28,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131512948] [2023-08-24 02:50:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:28,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:50:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131512948] [2023-08-24 02:50:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131512948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 02:50:28,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16154474] [2023-08-24 02:50:28,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 02:50:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:28,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 02:50:28,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 02:50:28,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 497 [2023-08-24 02:50:28,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:28,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:28,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 497 [2023-08-24 02:50:28,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:29,197 INFO L124 PetriNetUnfolderBase]: 1620/2222 cut-off events. [2023-08-24 02:50:29,198 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-08-24 02:50:29,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4423 conditions, 2222 events. 1620/2222 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8970 event pairs, 272 based on Foata normal form. 1/1357 useless extension candidates. Maximal degree in co-relation 3420. Up to 1413 conditions per place. [2023-08-24 02:50:29,215 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 45 selfloop transitions, 3 changer transitions 1/55 dead transitions. [2023-08-24 02:50:29,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 247 flow [2023-08-24 02:50:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 02:50:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 02:50:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-08-24 02:50:29,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842387659289068 [2023-08-24 02:50:29,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-08-24 02:50:29,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-08-24 02:50:29,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:29,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-08-24 02:50:29,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,255 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 98 flow. Second operand 3 states and 722 transitions. [2023-08-24 02:50:29,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 247 flow [2023-08-24 02:50:29,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-24 02:50:29,263 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 101 flow [2023-08-24 02:50:29,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-08-24 02:50:29,268 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-08-24 02:50:29,268 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 101 flow [2023-08-24 02:50:29,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:29,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:29,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 02:50:29,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:29,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:29,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1104096155, now seen corresponding path program 1 times [2023-08-24 02:50:29,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:29,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838832175] [2023-08-24 02:50:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:29,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:50:29,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838832175] [2023-08-24 02:50:29,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838832175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:29,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:29,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 02:50:29,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133026225] [2023-08-24 02:50:29,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:29,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 02:50:29,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 02:50:29,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 02:50:29,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 497 [2023-08-24 02:50:29,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:29,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 497 [2023-08-24 02:50:29,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:29,735 INFO L124 PetriNetUnfolderBase]: 2188/2886 cut-off events. [2023-08-24 02:50:29,736 INFO L125 PetriNetUnfolderBase]: For 481/481 co-relation queries the response was YES. [2023-08-24 02:50:29,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6428 conditions, 2886 events. 2188/2886 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11881 event pairs, 596 based on Foata normal form. 76/2339 useless extension candidates. Maximal degree in co-relation 2217. Up to 1820 conditions per place. [2023-08-24 02:50:29,753 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 55 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-24 02:50:29,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 272 flow [2023-08-24 02:50:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 02:50:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 02:50:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-24 02:50:29,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4795439302481556 [2023-08-24 02:50:29,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-24 02:50:29,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-24 02:50:29,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:29,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-24 02:50:29,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,762 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 101 flow. Second operand 3 states and 715 transitions. [2023-08-24 02:50:29,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 272 flow [2023-08-24 02:50:29,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 02:50:29,765 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 112 flow [2023-08-24 02:50:29,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-24 02:50:29,767 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-08-24 02:50:29,769 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 112 flow [2023-08-24 02:50:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:29,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:29,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 02:50:29,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:29,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:29,777 INFO L85 PathProgramCache]: Analyzing trace with hash -365331082, now seen corresponding path program 1 times [2023-08-24 02:50:29,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:29,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916360864] [2023-08-24 02:50:29,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:29,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:50:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916360864] [2023-08-24 02:50:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916360864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:29,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:29,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 02:50:29,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919316] [2023-08-24 02:50:29,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:29,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 02:50:29,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 02:50:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 02:50:29,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 497 [2023-08-24 02:50:29,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:29,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:29,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 497 [2023-08-24 02:50:29,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:30,239 INFO L124 PetriNetUnfolderBase]: 2418/3355 cut-off events. [2023-08-24 02:50:30,239 INFO L125 PetriNetUnfolderBase]: For 1265/1265 co-relation queries the response was YES. [2023-08-24 02:50:30,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7910 conditions, 3355 events. 2418/3355 cut-off events. For 1265/1265 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15452 event pairs, 747 based on Foata normal form. 100/3147 useless extension candidates. Maximal degree in co-relation 3828. Up to 2227 conditions per place. [2023-08-24 02:50:30,259 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 59 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-24 02:50:30,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 306 flow [2023-08-24 02:50:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 02:50:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 02:50:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2023-08-24 02:50:30,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48088531187122735 [2023-08-24 02:50:30,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2023-08-24 02:50:30,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2023-08-24 02:50:30,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:30,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2023-08-24 02:50:30,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,267 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 112 flow. Second operand 3 states and 717 transitions. [2023-08-24 02:50:30,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 306 flow [2023-08-24 02:50:30,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 02:50:30,272 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 124 flow [2023-08-24 02:50:30,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-24 02:50:30,273 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-08-24 02:50:30,273 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 124 flow [2023-08-24 02:50:30,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:30,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:30,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 02:50:30,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:30,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2131143009, now seen corresponding path program 1 times [2023-08-24 02:50:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:30,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694707038] [2023-08-24 02:50:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:30,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:50:30,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:30,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694707038] [2023-08-24 02:50:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694707038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:30,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:30,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 02:50:30,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213502213] [2023-08-24 02:50:30,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:30,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 02:50:30,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 02:50:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 02:50:30,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 497 [2023-08-24 02:50:30,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:30,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 497 [2023-08-24 02:50:30,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:30,809 INFO L124 PetriNetUnfolderBase]: 2115/3132 cut-off events. [2023-08-24 02:50:30,809 INFO L125 PetriNetUnfolderBase]: For 1778/1778 co-relation queries the response was YES. [2023-08-24 02:50:30,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7670 conditions, 3132 events. 2115/3132 cut-off events. For 1778/1778 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16362 event pairs, 1532 based on Foata normal form. 103/3178 useless extension candidates. Maximal degree in co-relation 3812. Up to 2239 conditions per place. [2023-08-24 02:50:30,824 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 60 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-08-24 02:50:30,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 337 flow [2023-08-24 02:50:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 02:50:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 02:50:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 995 transitions. [2023-08-24 02:50:30,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40040241448692154 [2023-08-24 02:50:30,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 995 transitions. [2023-08-24 02:50:30,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 995 transitions. [2023-08-24 02:50:30,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:30,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 995 transitions. [2023-08-24 02:50:30,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,834 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,835 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 124 flow. Second operand 5 states and 995 transitions. [2023-08-24 02:50:30,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 337 flow [2023-08-24 02:50:30,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 02:50:30,837 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 158 flow [2023-08-24 02:50:30,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-24 02:50:30,838 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-24 02:50:30,838 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 158 flow [2023-08-24 02:50:30,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:30,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:30,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 02:50:30,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:30,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1426481653, now seen corresponding path program 1 times [2023-08-24 02:50:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:30,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703141110] [2023-08-24 02:50:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:50:30,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703141110] [2023-08-24 02:50:30,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703141110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:30,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:30,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 02:50:30,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972159392] [2023-08-24 02:50:30,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:30,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 02:50:30,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 02:50:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 02:50:30,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 497 [2023-08-24 02:50:30,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:30,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:30,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 497 [2023-08-24 02:50:30,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:31,498 INFO L124 PetriNetUnfolderBase]: 2706/4108 cut-off events. [2023-08-24 02:50:31,498 INFO L125 PetriNetUnfolderBase]: For 2330/2330 co-relation queries the response was YES. [2023-08-24 02:50:31,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9901 conditions, 4108 events. 2706/4108 cut-off events. For 2330/2330 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23406 event pairs, 2028 based on Foata normal form. 102/4135 useless extension candidates. Maximal degree in co-relation 5839. Up to 2996 conditions per place. [2023-08-24 02:50:31,517 INFO L140 encePairwiseOnDemand]: 489/497 looper letters, 65 selfloop transitions, 7 changer transitions 3/81 dead transitions. [2023-08-24 02:50:31,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 434 flow [2023-08-24 02:50:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 02:50:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 02:50:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 999 transitions. [2023-08-24 02:50:31,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020120724346076 [2023-08-24 02:50:31,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 999 transitions. [2023-08-24 02:50:31,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 999 transitions. [2023-08-24 02:50:31,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:31,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 999 transitions. [2023-08-24 02:50:31,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:31,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:31,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:31,528 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 158 flow. Second operand 5 states and 999 transitions. [2023-08-24 02:50:31,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 434 flow [2023-08-24 02:50:31,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 422 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-24 02:50:31,532 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 216 flow [2023-08-24 02:50:31,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-24 02:50:31,533 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-08-24 02:50:31,533 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 216 flow [2023-08-24 02:50:31,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:31,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:31,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:31,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 02:50:31,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:31,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:31,535 INFO L85 PathProgramCache]: Analyzing trace with hash 409482241, now seen corresponding path program 1 times [2023-08-24 02:50:31,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:31,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762029466] [2023-08-24 02:50:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:31,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 02:50:31,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:31,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762029466] [2023-08-24 02:50:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762029466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:31,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:31,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 02:50:31,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183780033] [2023-08-24 02:50:31,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:31,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 02:50:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:31,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 02:50:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 02:50:31,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 497 [2023-08-24 02:50:31,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:31,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:31,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 497 [2023-08-24 02:50:31,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:33,567 INFO L124 PetriNetUnfolderBase]: 12268/17236 cut-off events. [2023-08-24 02:50:33,567 INFO L125 PetriNetUnfolderBase]: For 6027/6027 co-relation queries the response was YES. [2023-08-24 02:50:33,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39780 conditions, 17236 events. 12268/17236 cut-off events. For 6027/6027 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 92280 event pairs, 4988 based on Foata normal form. 328/17559 useless extension candidates. Maximal degree in co-relation 32332. Up to 6229 conditions per place. [2023-08-24 02:50:33,631 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 113 selfloop transitions, 11 changer transitions 1/125 dead transitions. [2023-08-24 02:50:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 125 transitions, 685 flow [2023-08-24 02:50:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 02:50:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 02:50:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1157 transitions. [2023-08-24 02:50:33,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38799463447350774 [2023-08-24 02:50:33,635 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1157 transitions. [2023-08-24 02:50:33,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1157 transitions. [2023-08-24 02:50:33,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:33,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1157 transitions. [2023-08-24 02:50:33,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:33,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:33,643 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:33,643 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 216 flow. Second operand 6 states and 1157 transitions. [2023-08-24 02:50:33,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 125 transitions, 685 flow [2023-08-24 02:50:33,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 125 transitions, 681 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 02:50:33,652 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 257 flow [2023-08-24 02:50:33,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-08-24 02:50:33,653 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-08-24 02:50:33,653 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 257 flow [2023-08-24 02:50:33,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:33,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:33,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:33,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 02:50:33,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:33,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash 915871961, now seen corresponding path program 1 times [2023-08-24 02:50:33,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425508595] [2023-08-24 02:50:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 02:50:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425508595] [2023-08-24 02:50:33,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425508595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:33,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 02:50:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096934294] [2023-08-24 02:50:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:33,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 02:50:33,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 02:50:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 02:50:33,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 497 [2023-08-24 02:50:33,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:33,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:33,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 497 [2023-08-24 02:50:33,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:35,155 INFO L124 PetriNetUnfolderBase]: 9188/12910 cut-off events. [2023-08-24 02:50:35,155 INFO L125 PetriNetUnfolderBase]: For 6110/6110 co-relation queries the response was YES. [2023-08-24 02:50:35,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31088 conditions, 12910 events. 9188/12910 cut-off events. For 6110/6110 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 64052 event pairs, 6752 based on Foata normal form. 160/13067 useless extension candidates. Maximal degree in co-relation 25365. Up to 11018 conditions per place. [2023-08-24 02:50:35,198 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 43 selfloop transitions, 7 changer transitions 38/88 dead transitions. [2023-08-24 02:50:35,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 517 flow [2023-08-24 02:50:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 02:50:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 02:50:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1126 transitions. [2023-08-24 02:50:35,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37759892689470154 [2023-08-24 02:50:35,201 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1126 transitions. [2023-08-24 02:50:35,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1126 transitions. [2023-08-24 02:50:35,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:35,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1126 transitions. [2023-08-24 02:50:35,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:35,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:35,210 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:35,210 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 257 flow. Second operand 6 states and 1126 transitions. [2023-08-24 02:50:35,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 517 flow [2023-08-24 02:50:35,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 505 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-24 02:50:35,217 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 236 flow [2023-08-24 02:50:35,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2023-08-24 02:50:35,218 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2023-08-24 02:50:35,218 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 236 flow [2023-08-24 02:50:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:35,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:35,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:35,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 02:50:35,219 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:35,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1608435341, now seen corresponding path program 1 times [2023-08-24 02:50:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384329127] [2023-08-24 02:50:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 02:50:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:35,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384329127] [2023-08-24 02:50:35,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384329127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:35,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:35,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 02:50:35,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968484181] [2023-08-24 02:50:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:35,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 02:50:35,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:35,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 02:50:35,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 02:50:35,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 497 [2023-08-24 02:50:35,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:35,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:35,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 497 [2023-08-24 02:50:35,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:36,326 INFO L124 PetriNetUnfolderBase]: 5813/7996 cut-off events. [2023-08-24 02:50:36,326 INFO L125 PetriNetUnfolderBase]: For 4165/4165 co-relation queries the response was YES. [2023-08-24 02:50:36,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20343 conditions, 7996 events. 5813/7996 cut-off events. For 4165/4165 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 36105 event pairs, 1010 based on Foata normal form. 416/8409 useless extension candidates. Maximal degree in co-relation 17450. Up to 5246 conditions per place. [2023-08-24 02:50:36,354 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 75 selfloop transitions, 7 changer transitions 4/86 dead transitions. [2023-08-24 02:50:36,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 518 flow [2023-08-24 02:50:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 02:50:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 02:50:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1122 transitions. [2023-08-24 02:50:36,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3762575452716298 [2023-08-24 02:50:36,359 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1122 transitions. [2023-08-24 02:50:36,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1122 transitions. [2023-08-24 02:50:36,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:36,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1122 transitions. [2023-08-24 02:50:36,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:36,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:36,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:36,366 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 236 flow. Second operand 6 states and 1122 transitions. [2023-08-24 02:50:36,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 518 flow [2023-08-24 02:50:36,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 494 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-24 02:50:36,371 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 200 flow [2023-08-24 02:50:36,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-24 02:50:36,372 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-08-24 02:50:36,372 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 200 flow [2023-08-24 02:50:36,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:36,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:36,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 02:50:36,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:36,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1600383555, now seen corresponding path program 1 times [2023-08-24 02:50:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:36,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14922766] [2023-08-24 02:50:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 02:50:36,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14922766] [2023-08-24 02:50:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14922766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:36,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:36,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 02:50:36,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981558680] [2023-08-24 02:50:36,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:36,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 02:50:36,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:36,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 02:50:36,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 02:50:36,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 497 [2023-08-24 02:50:36,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:36,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:36,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 497 [2023-08-24 02:50:36,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:37,510 INFO L124 PetriNetUnfolderBase]: 4654/6363 cut-off events. [2023-08-24 02:50:37,510 INFO L125 PetriNetUnfolderBase]: For 4952/4952 co-relation queries the response was YES. [2023-08-24 02:50:37,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16810 conditions, 6363 events. 4654/6363 cut-off events. For 4952/4952 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 26623 event pairs, 1274 based on Foata normal form. 432/6793 useless extension candidates. Maximal degree in co-relation 16780. Up to 2526 conditions per place. [2023-08-24 02:50:37,526 INFO L140 encePairwiseOnDemand]: 490/497 looper letters, 89 selfloop transitions, 7 changer transitions 12/108 dead transitions. [2023-08-24 02:50:37,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 631 flow [2023-08-24 02:50:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 02:50:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 02:50:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1293 transitions. [2023-08-24 02:50:37,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37165852256395515 [2023-08-24 02:50:37,531 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1293 transitions. [2023-08-24 02:50:37,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1293 transitions. [2023-08-24 02:50:37,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:37,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1293 transitions. [2023-08-24 02:50:37,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.71428571428572) internal successors, (1293), 7 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:37,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:37,539 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:37,539 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 200 flow. Second operand 7 states and 1293 transitions. [2023-08-24 02:50:37,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 631 flow [2023-08-24 02:50:37,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 584 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-24 02:50:37,542 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 197 flow [2023-08-24 02:50:37,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=174, 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=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-08-24 02:50:37,543 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-08-24 02:50:37,543 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 197 flow [2023-08-24 02:50:37,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:37,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:37,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:37,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 02:50:37,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:37,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1585742781, now seen corresponding path program 1 times [2023-08-24 02:50:37,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024984629] [2023-08-24 02:50:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 02:50:37,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:37,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024984629] [2023-08-24 02:50:37,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024984629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:50:37,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99944529] [2023-08-24 02:50:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:37,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:50:37,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:50:37,766 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) [2023-08-24 02:50:37,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 02:50:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:37,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 02:50:37,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:50:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 02:50:38,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:50:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 02:50:38,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99944529] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 02:50:38,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 02:50:38,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 9 [2023-08-24 02:50:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257097823] [2023-08-24 02:50:38,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:38,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 02:50:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:38,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 02:50:38,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-24 02:50:38,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 497 [2023-08-24 02:50:38,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 215.5) internal successors, (1293), 6 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:38,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:38,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 497 [2023-08-24 02:50:38,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:38,829 INFO L124 PetriNetUnfolderBase]: 3650/4900 cut-off events. [2023-08-24 02:50:38,829 INFO L125 PetriNetUnfolderBase]: For 4051/4252 co-relation queries the response was YES. [2023-08-24 02:50:38,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13926 conditions, 4900 events. 3650/4900 cut-off events. For 4051/4252 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 20303 event pairs, 743 based on Foata normal form. 327/5224 useless extension candidates. Maximal degree in co-relation 13895. Up to 1568 conditions per place. [2023-08-24 02:50:38,854 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 94 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2023-08-24 02:50:38,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 109 transitions, 611 flow [2023-08-24 02:50:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 02:50:38,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 02:50:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1352 transitions. [2023-08-24 02:50:38,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533869885982562 [2023-08-24 02:50:38,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1352 transitions. [2023-08-24 02:50:38,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1352 transitions. [2023-08-24 02:50:38,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:38,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1352 transitions. [2023-08-24 02:50:38,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.33333333333334) internal successors, (1352), 6 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:38,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:38,868 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:38,868 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 197 flow. Second operand 6 states and 1352 transitions. [2023-08-24 02:50:38,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 109 transitions, 611 flow [2023-08-24 02:50:38,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 109 transitions, 584 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-24 02:50:38,878 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 262 flow [2023-08-24 02:50:38,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-24 02:50:38,878 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-08-24 02:50:38,878 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 262 flow [2023-08-24 02:50:38,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.5) internal successors, (1293), 6 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:38,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:38,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:38,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 02:50:39,085 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,SelfDestructingSolverStorable9 [2023-08-24 02:50:39,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:39,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:39,086 INFO L85 PathProgramCache]: Analyzing trace with hash -443553308, now seen corresponding path program 1 times [2023-08-24 02:50:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:39,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263525353] [2023-08-24 02:50:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:39,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 02:50:39,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:39,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263525353] [2023-08-24 02:50:39,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263525353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:39,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:39,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 02:50:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899199117] [2023-08-24 02:50:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 02:50:39,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 02:50:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 02:50:39,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 497 [2023-08-24 02:50:39,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:39,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:39,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 497 [2023-08-24 02:50:39,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:40,198 INFO L124 PetriNetUnfolderBase]: 6221/8422 cut-off events. [2023-08-24 02:50:40,198 INFO L125 PetriNetUnfolderBase]: For 18468/19414 co-relation queries the response was YES. [2023-08-24 02:50:40,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28522 conditions, 8422 events. 6221/8422 cut-off events. For 18468/19414 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 40550 event pairs, 867 based on Foata normal form. 967/9285 useless extension candidates. Maximal degree in co-relation 28492. Up to 3093 conditions per place. [2023-08-24 02:50:40,238 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 112 selfloop transitions, 11 changer transitions 0/131 dead transitions. [2023-08-24 02:50:40,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 131 transitions, 909 flow [2023-08-24 02:50:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 02:50:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 02:50:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1396 transitions. [2023-08-24 02:50:40,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681421864520456 [2023-08-24 02:50:40,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1396 transitions. [2023-08-24 02:50:40,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1396 transitions. [2023-08-24 02:50:40,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:40,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1396 transitions. [2023-08-24 02:50:40,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.66666666666666) internal successors, (1396), 6 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:40,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:40,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:40,250 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 262 flow. Second operand 6 states and 1396 transitions. [2023-08-24 02:50:40,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 131 transitions, 909 flow [2023-08-24 02:50:40,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 131 transitions, 892 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-24 02:50:40,270 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 343 flow [2023-08-24 02:50:40,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-08-24 02:50:40,271 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-08-24 02:50:40,271 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 343 flow [2023-08-24 02:50:40,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:40,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:40,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:40,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 02:50:40,272 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:40,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1673894642, now seen corresponding path program 2 times [2023-08-24 02:50:40,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:40,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611942242] [2023-08-24 02:50:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:40,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 02:50:40,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:40,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611942242] [2023-08-24 02:50:40,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611942242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:50:40,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:50:40,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 02:50:40,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633854546] [2023-08-24 02:50:40,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:50:40,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 02:50:40,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:50:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 02:50:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 02:50:40,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 497 [2023-08-24 02:50:40,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 176.83333333333334) internal successors, (1061), 6 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:40,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:50:40,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 497 [2023-08-24 02:50:40,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:50:41,838 INFO L124 PetriNetUnfolderBase]: 9800/13107 cut-off events. [2023-08-24 02:50:41,838 INFO L125 PetriNetUnfolderBase]: For 30751/30751 co-relation queries the response was YES. [2023-08-24 02:50:41,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48759 conditions, 13107 events. 9800/13107 cut-off events. For 30751/30751 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 58692 event pairs, 2097 based on Foata normal form. 368/13474 useless extension candidates. Maximal degree in co-relation 48725. Up to 9807 conditions per place. [2023-08-24 02:50:41,899 INFO L140 encePairwiseOnDemand]: 490/497 looper letters, 136 selfloop transitions, 8 changer transitions 0/144 dead transitions. [2023-08-24 02:50:41,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 144 transitions, 1133 flow [2023-08-24 02:50:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 02:50:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 02:50:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2023-08-24 02:50:41,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3687841333716585 [2023-08-24 02:50:41,903 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2023-08-24 02:50:41,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2023-08-24 02:50:41,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:50:41,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2023-08-24 02:50:41,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:41,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:41,911 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:41,911 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 343 flow. Second operand 7 states and 1283 transitions. [2023-08-24 02:50:41,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 144 transitions, 1133 flow [2023-08-24 02:50:41,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 144 transitions, 1130 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 02:50:41,967 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 388 flow [2023-08-24 02:50:41,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-08-24 02:50:41,968 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2023-08-24 02:50:41,968 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 388 flow [2023-08-24 02:50:41,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.83333333333334) internal successors, (1061), 6 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:50:41,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:50:41,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:50:41,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 02:50:41,969 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 02:50:41,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:50:41,969 INFO L85 PathProgramCache]: Analyzing trace with hash -178694509, now seen corresponding path program 1 times [2023-08-24 02:50:41,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:50:41,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513708219] [2023-08-24 02:50:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:41,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:50:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:50:44,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:50:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513708219] [2023-08-24 02:50:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513708219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:50:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576963066] [2023-08-24 02:50:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:50:44,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:50:44,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:50:44,435 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) [2023-08-24 02:50:44,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 02:50:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:50:44,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 93 conjunts are in the unsatisfiable core [2023-08-24 02:50:44,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:50:44,830 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 [2023-08-24 02:50:44,939 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 [2023-08-24 02:50:45,102 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 02:50:45,103 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 11 treesize of output 11 [2023-08-24 02:50:45,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-08-24 02:50:45,327 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 [2023-08-24 02:50:45,661 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 [2023-08-24 02:50:45,938 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 [2023-08-24 02:50:46,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 02:50:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 02:50:46,290 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 02:50:46,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2023-08-24 02:50:46,855 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:50:46,855 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:50:46,868 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-24 02:50:46,869 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 46 treesize of output 30 [2023-08-24 02:50:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:50:46,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:50:49,715 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:50:49,715 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 217 treesize of output 157 [2023-08-24 02:50:50,210 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:50:50,218 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72490978 treesize of output 71184590 [2023-08-24 02:50:56,341 WARN L234 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 5490 DAG size of output: 1117 (called from [L 729] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-24 02:50:56,527 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:50:56,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59010 treesize of output 57482 [2023-08-24 02:50:57,734 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:50:57,735 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 57282 treesize of output 56618 [2023-08-24 02:50:58,894 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:50:58,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56418 treesize of output 53162 [2023-08-24 02:51:00,026 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:51:00,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47596 treesize of output 36414 [2023-08-24 02:51:01,313 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:51:01,314 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 41698 treesize of output 34986 Received shutdown request... [2023-08-24 03:04:10,621 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 03:04:10,624 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 [2023-08-24 03:04:10,654 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-24 03:04:10,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 03:04:10,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 03:04:10,856 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,SelfDestructingSolverStorable12 [2023-08-24 03:04:10,856 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 47ms.. [2023-08-24 03:04:10,858 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-24 03:04:10,858 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 03:04:10,858 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 03:04:10,858 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 03:04:10,858 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:04:10,860 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 03:04:10,860 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 03:04:10,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 03:04:10 BasicIcfg [2023-08-24 03:04:10,865 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 03:04:10,865 INFO L158 Benchmark]: Toolchain (without parser) took 832648.52ms. Allocated memory was 356.5MB in the beginning and 2.9GB in the end (delta: 2.5GB). Free memory was 332.6MB in the beginning and 1.9GB in the end (delta: -1.5GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-24 03:04:10,866 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 356.5MB. Free memory is still 333.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:04:10,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.01ms. Allocated memory is still 356.5MB. Free memory was 332.6MB in the beginning and 319.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 03:04:10,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.05ms. Allocated memory is still 356.5MB. Free memory was 319.7MB in the beginning and 316.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 03:04:10,867 INFO L158 Benchmark]: Boogie Preprocessor took 34.53ms. Allocated memory is still 356.5MB. Free memory was 316.8MB in the beginning and 314.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 03:04:10,867 INFO L158 Benchmark]: RCFGBuilder took 795.02ms. Allocated memory is still 356.5MB. Free memory was 314.4MB in the beginning and 314.2MB in the end (delta: 161.1kB). Peak memory consumption was 44.4MB. Max. memory is 16.0GB. [2023-08-24 03:04:10,867 INFO L158 Benchmark]: TraceAbstraction took 831466.33ms. Allocated memory was 356.5MB in the beginning and 2.9GB in the end (delta: 2.5GB). Free memory was 313.4MB in the beginning and 1.9GB in the end (delta: -1.5GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-24 03:04:10,870 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 356.5MB. Free memory is still 333.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 300.01ms. Allocated memory is still 356.5MB. Free memory was 332.6MB in the beginning and 319.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.05ms. Allocated memory is still 356.5MB. Free memory was 319.7MB in the beginning and 316.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.53ms. Allocated memory is still 356.5MB. Free memory was 316.8MB in the beginning and 314.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 795.02ms. Allocated memory is still 356.5MB. Free memory was 314.4MB in the beginning and 314.2MB in the end (delta: 161.1kB). Peak memory consumption was 44.4MB. Max. memory is 16.0GB. * TraceAbstraction took 831466.33ms. Allocated memory was 356.5MB in the beginning and 2.9GB in the end (delta: 2.5GB). Free memory was 313.4MB in the beginning and 1.9GB in the end (delta: -1.5GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5s, 229 PlacesBefore, 43 PlacesAfterwards, 238 TransitionsBefore, 37 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 7 FixpointIterations, 153 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 40 TrivialYvCompositions, 8 ConcurrentYvCompositions, 15 ChoiceCompositions, 243 TotalNumberOfCompositions, 2788 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2435, independent: 2385, independent conditional: 0, independent unconditional: 2385, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 957, independent: 939, independent conditional: 0, independent unconditional: 939, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2435, independent: 1446, independent conditional: 0, independent unconditional: 1446, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 957, unknown conditional: 0, unknown unconditional: 957] , Statistics on independence cache: Total cache size (in pairs): 142, Positive cache size: 135, Positive conditional cache size: 0, Positive unconditional cache size: 135, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 47ms.. - TimeoutResultAtElement [Line: 142]: 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 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 47ms.. - TimeoutResultAtElement [Line: 143]: 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 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 47ms.. - TimeoutResultAtElement [Line: 144]: 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 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 47ms.. - TimeoutResultAtElement [Line: 141]: 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 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 47ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 265 locations, 5 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: 831.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 580 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 580 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1551 IncrementalHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 15 mSDtfsCounter, 1551 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred in iteration=12, InterpolantAutomatonStates: 63, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 441 ConstructedInterpolants, 0 QuantifiedInterpolants, 1360 SizeOfPredicates, 10 NumberOfNonLiveVariables, 417 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 48/50 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