/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 14:43:20,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 14:43:20,216 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 14:43:20,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 14:43:20,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 14:43:20,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 14:43:20,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 14:43:20,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 14:43:20,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 14:43:20,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 14:43:20,258 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 14:43:20,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 14:43:20,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 14:43:20,259 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 14:43:20,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 14:43:20,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 14:43:20,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 14:43:20,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 14:43:20,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 14:43:20,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 14:43:20,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 14:43:20,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 14:43:20,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 14:43:20,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 14:43:20,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 14:43:20,262 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 14:43:20,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 14:43:20,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 14:43:20,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 14:43:20,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 14:43:20,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 14:43:20,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 14:43:20,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 14:43:20,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 14:43:20,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 14:43:20,265 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 14:43:20,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 14:43:20,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 14:43:20,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 14:43:20,622 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 14:43:20,622 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 14:43:20,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-24 14:43:21,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 14:43:22,083 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 14:43:22,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-24 14:43:22,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a3f233ec/35c1047243794503aa4f0d30dc27f219/FLAG53341fade [2023-08-24 14:43:22,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a3f233ec/35c1047243794503aa4f0d30dc27f219 [2023-08-24 14:43:22,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 14:43:22,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 14:43:22,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 14:43:22,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 14:43:22,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 14:43:22,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d84fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22, skipping insertion in model container [2023-08-24 14:43:22,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,129 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 14:43:22,253 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/parallel-ticket-4.wvr.c[3526,3539] [2023-08-24 14:43:22,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 14:43:22,261 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 14:43:22,281 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/parallel-ticket-4.wvr.c[3526,3539] [2023-08-24 14:43:22,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 14:43:22,289 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 14:43:22,289 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 14:43:22,295 INFO L206 MainTranslator]: Completed translation [2023-08-24 14:43:22,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22 WrapperNode [2023-08-24 14:43:22,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 14:43:22,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 14:43:22,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 14:43:22,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 14:43:22,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,335 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2023-08-24 14:43:22,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 14:43:22,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 14:43:22,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 14:43:22,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 14:43:22,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,346 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 14:43:22,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 14:43:22,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 14:43:22,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 14:43:22,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (1/1) ... [2023-08-24 14:43:22,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 14:43:22,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:43:22,394 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 14:43:22,396 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 14:43:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 14:43:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 14:43:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 14:43:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 14:43:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 14:43:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 14:43:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 14:43:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-24 14:43:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-24 14:43:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 14:43:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 14:43:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 14:43:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 14:43:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 14:43:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 14:43:22,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 14:43:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 14:43:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 14:43:22,421 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 14:43:22,503 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 14:43:22,505 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 14:43:22,851 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 14:43:22,938 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 14:43:22,939 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 14:43:22,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:43:22 BoogieIcfgContainer [2023-08-24 14:43:22,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 14:43:22,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 14:43:22,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 14:43:22,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 14:43:22,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 02:43:22" (1/3) ... [2023-08-24 14:43:22,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab145e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:43:22, skipping insertion in model container [2023-08-24 14:43:22,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:43:22" (2/3) ... [2023-08-24 14:43:22,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab145e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:43:22, skipping insertion in model container [2023-08-24 14:43:22,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:43:22" (3/3) ... [2023-08-24 14:43:22,947 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-08-24 14:43:22,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 14:43:22,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 14:43:22,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 14:43:23,037 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 14:43:23,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 143 transitions, 318 flow [2023-08-24 14:43:23,179 INFO L124 PetriNetUnfolderBase]: 2/139 cut-off events. [2023-08-24 14:43:23,179 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 14:43:23,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 139 events. 2/139 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-24 14:43:23,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 143 transitions, 318 flow [2023-08-24 14:43:23,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 278 flow [2023-08-24 14:43:23,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 14:43:23,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 278 flow [2023-08-24 14:43:23,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 278 flow [2023-08-24 14:43:23,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 278 flow [2023-08-24 14:43:23,243 INFO L124 PetriNetUnfolderBase]: 2/127 cut-off events. [2023-08-24 14:43:23,243 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 14:43:23,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 127 events. 2/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-24 14:43:23,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 1302 [2023-08-24 14:43:27,233 INFO L134 LiptonReduction]: Checked pairs total: 7253 [2023-08-24 14:43:27,233 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-24 14:43:27,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 14:43:27,265 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;@6e2013ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 14:43:27,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 14:43:27,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 14:43:27,278 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-08-24 14:43:27,278 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 14:43:27,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:27,279 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] [2023-08-24 14:43:27,279 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 14:43:27,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:27,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1293402980, now seen corresponding path program 1 times [2023-08-24 14:43:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:27,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90919532] [2023-08-24 14:43:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:28,554 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 14:43:28,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:28,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90919532] [2023-08-24 14:43:28,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90919532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:28,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:28,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 14:43:28,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782819513] [2023-08-24 14:43:28,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:28,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 14:43:28,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:28,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 14:43:28,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 14:43:28,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-08-24 14:43:28,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 14:43:28,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:28,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-08-24 14:43:28,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:29,732 INFO L124 PetriNetUnfolderBase]: 8869/12480 cut-off events. [2023-08-24 14:43:29,732 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2023-08-24 14:43:29,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25800 conditions, 12480 events. 8869/12480 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 62456 event pairs, 2184 based on Foata normal form. 2/12482 useless extension candidates. Maximal degree in co-relation 25176. Up to 4452 conditions per place. [2023-08-24 14:43:29,796 INFO L140 encePairwiseOnDemand]: 232/244 looper letters, 103 selfloop transitions, 19 changer transitions 19/141 dead transitions. [2023-08-24 14:43:29,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 141 transitions, 642 flow [2023-08-24 14:43:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 14:43:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 14:43:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 967 transitions. [2023-08-24 14:43:29,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953893442622951 [2023-08-24 14:43:29,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 967 transitions. [2023-08-24 14:43:29,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 967 transitions. [2023-08-24 14:43:29,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:29,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 967 transitions. [2023-08-24 14:43:29,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states 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 14:43:29,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 14:43:29,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 14:43:29,834 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 92 flow. Second operand 8 states and 967 transitions. [2023-08-24 14:43:29,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 141 transitions, 642 flow [2023-08-24 14:43:29,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 141 transitions, 590 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-24 14:43:29,856 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 214 flow [2023-08-24 14:43:29,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-08-24 14:43:29,861 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-24 14:43:29,862 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 214 flow [2023-08-24 14:43:29,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 14:43:29,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:29,863 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] [2023-08-24 14:43:29,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 14:43:29,863 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 14:43:29,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:29,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1957152440, now seen corresponding path program 2 times [2023-08-24 14:43:29,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:29,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024091582] [2023-08-24 14:43:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:30,133 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 14:43:30,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024091582] [2023-08-24 14:43:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024091582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:30,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:30,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 14:43:30,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277399446] [2023-08-24 14:43:30,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:30,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 14:43:30,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 14:43:30,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 14:43:30,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:30,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:43:30,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:30,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:30,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:30,753 INFO L124 PetriNetUnfolderBase]: 4177/6446 cut-off events. [2023-08-24 14:43:30,753 INFO L125 PetriNetUnfolderBase]: For 3643/3859 co-relation queries the response was YES. [2023-08-24 14:43:30,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16533 conditions, 6446 events. 4177/6446 cut-off events. For 3643/3859 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38047 event pairs, 863 based on Foata normal form. 188/6388 useless extension candidates. Maximal degree in co-relation 13048. Up to 3891 conditions per place. [2023-08-24 14:43:30,813 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 87 selfloop transitions, 20 changer transitions 0/123 dead transitions. [2023-08-24 14:43:30,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 123 transitions, 651 flow [2023-08-24 14:43:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 14:43:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 14:43:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 877 transitions. [2023-08-24 14:43:30,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134660421545667 [2023-08-24 14:43:30,817 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 877 transitions. [2023-08-24 14:43:30,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 877 transitions. [2023-08-24 14:43:30,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:30,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 877 transitions. [2023-08-24 14:43:30,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.28571428571429) internal successors, (877), 7 states have internal predecessors, (877), 0 states have call successors, (0), 0 states 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 14:43:30,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 14:43:30,823 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 14:43:30,823 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 214 flow. Second operand 7 states and 877 transitions. [2023-08-24 14:43:30,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 123 transitions, 651 flow [2023-08-24 14:43:30,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 123 transitions, 632 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 14:43:30,845 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 303 flow [2023-08-24 14:43:30,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2023-08-24 14:43:30,846 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-08-24 14:43:30,846 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 303 flow [2023-08-24 14:43:30,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:43:30,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:30,847 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] [2023-08-24 14:43:30,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 14:43:30,847 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 14:43:30,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -710510570, now seen corresponding path program 3 times [2023-08-24 14:43:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:30,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244149077] [2023-08-24 14:43:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:30,996 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 14:43:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244149077] [2023-08-24 14:43:30,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244149077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:30,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:30,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 14:43:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281009648] [2023-08-24 14:43:30,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 14:43:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 14:43:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 14:43:30,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 14:43:31,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 303 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 14:43:31,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:31,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 14:43:31,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:31,835 INFO L124 PetriNetUnfolderBase]: 5460/9155 cut-off events. [2023-08-24 14:43:31,835 INFO L125 PetriNetUnfolderBase]: For 9294/9631 co-relation queries the response was YES. [2023-08-24 14:43:31,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27539 conditions, 9155 events. 5460/9155 cut-off events. For 9294/9631 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 64636 event pairs, 1485 based on Foata normal form. 303/9232 useless extension candidates. Maximal degree in co-relation 10633. Up to 2671 conditions per place. [2023-08-24 14:43:31,896 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 88 selfloop transitions, 41 changer transitions 0/145 dead transitions. [2023-08-24 14:43:31,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 145 transitions, 852 flow [2023-08-24 14:43:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 14:43:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 14:43:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 661 transitions. [2023-08-24 14:43:31,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418032786885246 [2023-08-24 14:43:31,898 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 661 transitions. [2023-08-24 14:43:31,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 661 transitions. [2023-08-24 14:43:31,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:31,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 661 transitions. [2023-08-24 14:43:31,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 14:43:31,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 14:43:31,903 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 14:43:31,903 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 303 flow. Second operand 5 states and 661 transitions. [2023-08-24 14:43:31,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 145 transitions, 852 flow [2023-08-24 14:43:31,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 145 transitions, 847 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 14:43:31,915 INFO L231 Difference]: Finished difference. Result has 64 places, 89 transitions, 551 flow [2023-08-24 14:43:31,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=551, PETRI_PLACES=64, PETRI_TRANSITIONS=89} [2023-08-24 14:43:31,916 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2023-08-24 14:43:31,919 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 89 transitions, 551 flow [2023-08-24 14:43:31,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 14:43:31,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:31,920 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] [2023-08-24 14:43:31,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 14:43:31,920 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 14:43:31,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:31,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1434213364, now seen corresponding path program 4 times [2023-08-24 14:43:31,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:31,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277504084] [2023-08-24 14:43:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:31,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:32,199 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 14:43:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277504084] [2023-08-24 14:43:32,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277504084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:32,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:32,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 14:43:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105680977] [2023-08-24 14:43:32,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:32,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 14:43:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 14:43:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 14:43:32,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 14:43:32,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 89 transitions, 551 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 14:43:32,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:32,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 14:43:32,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:33,386 INFO L124 PetriNetUnfolderBase]: 6799/11711 cut-off events. [2023-08-24 14:43:33,386 INFO L125 PetriNetUnfolderBase]: For 23454/24658 co-relation queries the response was YES. [2023-08-24 14:43:33,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42088 conditions, 11711 events. 6799/11711 cut-off events. For 23454/24658 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 89686 event pairs, 1092 based on Foata normal form. 862/12241 useless extension candidates. Maximal degree in co-relation 14560. Up to 3447 conditions per place. [2023-08-24 14:43:33,625 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 122 selfloop transitions, 98 changer transitions 2/238 dead transitions. [2023-08-24 14:43:33,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 238 transitions, 1745 flow [2023-08-24 14:43:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 14:43:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 14:43:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1050 transitions. [2023-08-24 14:43:33,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379098360655737 [2023-08-24 14:43:33,629 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1050 transitions. [2023-08-24 14:43:33,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1050 transitions. [2023-08-24 14:43:33,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:33,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1050 transitions. [2023-08-24 14:43:33,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.25) internal successors, (1050), 8 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 14:43:33,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 14:43:33,635 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 14:43:33,635 INFO L175 Difference]: Start difference. First operand has 64 places, 89 transitions, 551 flow. Second operand 8 states and 1050 transitions. [2023-08-24 14:43:33,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 238 transitions, 1745 flow [2023-08-24 14:43:33,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 238 transitions, 1731 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-24 14:43:33,681 INFO L231 Difference]: Finished difference. Result has 75 places, 146 transitions, 1321 flow [2023-08-24 14:43:33,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1321, PETRI_PLACES=75, PETRI_TRANSITIONS=146} [2023-08-24 14:43:33,682 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2023-08-24 14:43:33,683 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 146 transitions, 1321 flow [2023-08-24 14:43:33,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 14:43:33,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:33,683 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] [2023-08-24 14:43:33,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 14:43:33,684 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 14:43:33,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1147527626, now seen corresponding path program 5 times [2023-08-24 14:43:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446120075] [2023-08-24 14:43:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:34,215 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 14:43:34,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:34,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446120075] [2023-08-24 14:43:34,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446120075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:34,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:34,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 14:43:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030958546] [2023-08-24 14:43:34,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:34,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 14:43:34,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:34,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 14:43:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-24 14:43:34,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-08-24 14:43:34,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 146 transitions, 1321 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 14:43:34,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:34,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-08-24 14:43:34,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:36,739 INFO L124 PetriNetUnfolderBase]: 15580/23826 cut-off events. [2023-08-24 14:43:36,739 INFO L125 PetriNetUnfolderBase]: For 93257/93257 co-relation queries the response was YES. [2023-08-24 14:43:36,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104116 conditions, 23826 events. 15580/23826 cut-off events. For 93257/93257 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 158301 event pairs, 3442 based on Foata normal form. 3/23829 useless extension candidates. Maximal degree in co-relation 42434. Up to 9132 conditions per place. [2023-08-24 14:43:36,884 INFO L140 encePairwiseOnDemand]: 232/244 looper letters, 340 selfloop transitions, 27 changer transitions 105/472 dead transitions. [2023-08-24 14:43:36,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 472 transitions, 5160 flow [2023-08-24 14:43:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 14:43:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 14:43:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1085 transitions. [2023-08-24 14:43:36,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49408014571949 [2023-08-24 14:43:36,888 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1085 transitions. [2023-08-24 14:43:36,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1085 transitions. [2023-08-24 14:43:36,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:36,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1085 transitions. [2023-08-24 14:43:36,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.55555555555556) internal successors, (1085), 9 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 14:43:36,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 14:43:36,894 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 14:43:36,895 INFO L175 Difference]: Start difference. First operand has 75 places, 146 transitions, 1321 flow. Second operand 9 states and 1085 transitions. [2023-08-24 14:43:36,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 472 transitions, 5160 flow [2023-08-24 14:43:37,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 472 transitions, 5008 flow, removed 76 selfloop flow, removed 0 redundant places. [2023-08-24 14:43:37,030 INFO L231 Difference]: Finished difference. Result has 88 places, 155 transitions, 1430 flow [2023-08-24 14:43:37,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=88, PETRI_TRANSITIONS=155} [2023-08-24 14:43:37,032 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 41 predicate places. [2023-08-24 14:43:37,032 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 155 transitions, 1430 flow [2023-08-24 14:43:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 14:43:37,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:37,033 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] [2023-08-24 14:43:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 14:43:37,033 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 14:43:37,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash -415430786, now seen corresponding path program 6 times [2023-08-24 14:43:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767827088] [2023-08-24 14:43:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:37,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:37,367 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 14:43:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767827088] [2023-08-24 14:43:37,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767827088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:37,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:37,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 14:43:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999765191] [2023-08-24 14:43:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:37,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 14:43:37,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:37,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 14:43:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-24 14:43:37,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:37,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 155 transitions, 1430 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 14:43:37,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:37,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:37,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:38,443 INFO L124 PetriNetUnfolderBase]: 5983/10344 cut-off events. [2023-08-24 14:43:38,443 INFO L125 PetriNetUnfolderBase]: For 47973/49877 co-relation queries the response was YES. [2023-08-24 14:43:38,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47450 conditions, 10344 events. 5983/10344 cut-off events. For 47973/49877 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 76122 event pairs, 1408 based on Foata normal form. 610/10726 useless extension candidates. Maximal degree in co-relation 37198. Up to 7149 conditions per place. [2023-08-24 14:43:38,519 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 153 selfloop transitions, 66 changer transitions 5/248 dead transitions. [2023-08-24 14:43:38,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 248 transitions, 2447 flow [2023-08-24 14:43:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 14:43:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 14:43:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1350 transitions. [2023-08-24 14:43:38,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029806259314457 [2023-08-24 14:43:38,524 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1350 transitions. [2023-08-24 14:43:38,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1350 transitions. [2023-08-24 14:43:38,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:38,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1350 transitions. [2023-08-24 14:43:38,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.72727272727273) internal successors, (1350), 11 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 14:43:38,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states 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 14:43:38,531 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states 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 14:43:38,532 INFO L175 Difference]: Start difference. First operand has 88 places, 155 transitions, 1430 flow. Second operand 11 states and 1350 transitions. [2023-08-24 14:43:38,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 248 transitions, 2447 flow [2023-08-24 14:43:38,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 248 transitions, 2405 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-24 14:43:38,617 INFO L231 Difference]: Finished difference. Result has 99 places, 182 transitions, 1872 flow [2023-08-24 14:43:38,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1872, PETRI_PLACES=99, PETRI_TRANSITIONS=182} [2023-08-24 14:43:38,620 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 52 predicate places. [2023-08-24 14:43:38,620 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 182 transitions, 1872 flow [2023-08-24 14:43:38,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 14:43:38,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:38,622 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] [2023-08-24 14:43:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 14:43:38,622 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 14:43:38,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1255788140, now seen corresponding path program 7 times [2023-08-24 14:43:38,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:38,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542535720] [2023-08-24 14:43:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:38,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:38,811 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 14:43:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542535720] [2023-08-24 14:43:38,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542535720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:38,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:38,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 14:43:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878374423] [2023-08-24 14:43:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 14:43:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 14:43:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 14:43:38,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:38,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 182 transitions, 1872 flow. Second operand has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states 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 14:43:38,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:38,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:38,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:40,068 INFO L124 PetriNetUnfolderBase]: 6809/11935 cut-off events. [2023-08-24 14:43:40,068 INFO L125 PetriNetUnfolderBase]: For 65301/67687 co-relation queries the response was YES. [2023-08-24 14:43:40,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56670 conditions, 11935 events. 6809/11935 cut-off events. For 65301/67687 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 91797 event pairs, 1243 based on Foata normal form. 680/12337 useless extension candidates. Maximal degree in co-relation 46791. Up to 4494 conditions per place. [2023-08-24 14:43:40,149 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 157 selfloop transitions, 93 changer transitions 11/285 dead transitions. [2023-08-24 14:43:40,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 285 transitions, 3090 flow [2023-08-24 14:43:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 14:43:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 14:43:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1122 transitions. [2023-08-24 14:43:40,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109289617486339 [2023-08-24 14:43:40,153 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1122 transitions. [2023-08-24 14:43:40,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1122 transitions. [2023-08-24 14:43:40,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:40,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1122 transitions. [2023-08-24 14:43:40,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.66666666666667) internal successors, (1122), 9 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 14:43:40,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 14:43:40,160 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 14:43:40,160 INFO L175 Difference]: Start difference. First operand has 99 places, 182 transitions, 1872 flow. Second operand 9 states and 1122 transitions. [2023-08-24 14:43:40,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 285 transitions, 3090 flow [2023-08-24 14:43:40,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 285 transitions, 3031 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-08-24 14:43:40,294 INFO L231 Difference]: Finished difference. Result has 108 places, 211 transitions, 2531 flow [2023-08-24 14:43:40,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2531, PETRI_PLACES=108, PETRI_TRANSITIONS=211} [2023-08-24 14:43:40,294 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 61 predicate places. [2023-08-24 14:43:40,295 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 211 transitions, 2531 flow [2023-08-24 14:43:40,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states 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 14:43:40,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:40,295 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] [2023-08-24 14:43:40,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 14:43:40,295 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 14:43:40,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1833021434, now seen corresponding path program 8 times [2023-08-24 14:43:40,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:40,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127719477] [2023-08-24 14:43:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:40,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:40,470 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 14:43:40,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:40,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127719477] [2023-08-24 14:43:40,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127719477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:40,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:40,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 14:43:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597128741] [2023-08-24 14:43:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 14:43:40,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:40,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 14:43:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 14:43:40,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:40,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 211 transitions, 2531 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:43:40,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:40,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:40,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:41,602 INFO L124 PetriNetUnfolderBase]: 6070/10787 cut-off events. [2023-08-24 14:43:41,602 INFO L125 PetriNetUnfolderBase]: For 81945/84095 co-relation queries the response was YES. [2023-08-24 14:43:41,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56136 conditions, 10787 events. 6070/10787 cut-off events. For 81945/84095 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 82947 event pairs, 1824 based on Foata normal form. 550/11053 useless extension candidates. Maximal degree in co-relation 54039. Up to 7996 conditions per place. [2023-08-24 14:43:41,682 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 149 selfloop transitions, 55 changer transitions 16/240 dead transitions. [2023-08-24 14:43:41,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 240 transitions, 3090 flow [2023-08-24 14:43:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 14:43:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 14:43:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 857 transitions. [2023-08-24 14:43:41,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017564402810304 [2023-08-24 14:43:41,685 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 857 transitions. [2023-08-24 14:43:41,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 857 transitions. [2023-08-24 14:43:41,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:41,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 857 transitions. [2023-08-24 14:43:41,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.42857142857143) internal successors, (857), 7 states have internal predecessors, (857), 0 states have call successors, (0), 0 states 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 14:43:41,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 14:43:41,691 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 14:43:41,691 INFO L175 Difference]: Start difference. First operand has 108 places, 211 transitions, 2531 flow. Second operand 7 states and 857 transitions. [2023-08-24 14:43:41,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 240 transitions, 3090 flow [2023-08-24 14:43:41,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 240 transitions, 3064 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 14:43:41,844 INFO L231 Difference]: Finished difference. Result has 111 places, 197 transitions, 2506 flow [2023-08-24 14:43:41,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2506, PETRI_PLACES=111, PETRI_TRANSITIONS=197} [2023-08-24 14:43:41,845 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 64 predicate places. [2023-08-24 14:43:41,845 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 197 transitions, 2506 flow [2023-08-24 14:43:41,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:43:41,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:41,845 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] [2023-08-24 14:43:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 14:43:41,846 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 14:43:41,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 982709524, now seen corresponding path program 9 times [2023-08-24 14:43:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638666328] [2023-08-24 14:43:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:42,001 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 14:43:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638666328] [2023-08-24 14:43:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638666328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:42,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:42,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 14:43:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385555297] [2023-08-24 14:43:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:42,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 14:43:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 14:43:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 14:43:42,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:42,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 197 transitions, 2506 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:43:42,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:42,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:42,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:42,769 INFO L124 PetriNetUnfolderBase]: 3743/7026 cut-off events. [2023-08-24 14:43:42,770 INFO L125 PetriNetUnfolderBase]: For 50194/51904 co-relation queries the response was YES. [2023-08-24 14:43:42,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35848 conditions, 7026 events. 3743/7026 cut-off events. For 50194/51904 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 52874 event pairs, 1030 based on Foata normal form. 358/7226 useless extension candidates. Maximal degree in co-relation 34288. Up to 5250 conditions per place. [2023-08-24 14:43:42,817 INFO L140 encePairwiseOnDemand]: 235/244 looper letters, 156 selfloop transitions, 48 changer transitions 1/217 dead transitions. [2023-08-24 14:43:42,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 217 transitions, 2897 flow [2023-08-24 14:43:42,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 14:43:42,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 14:43:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 856 transitions. [2023-08-24 14:43:42,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011709601873536 [2023-08-24 14:43:42,820 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 856 transitions. [2023-08-24 14:43:42,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 856 transitions. [2023-08-24 14:43:42,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:42,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 856 transitions. [2023-08-24 14:43:42,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 14:43:42,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 14:43:42,825 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 14:43:42,826 INFO L175 Difference]: Start difference. First operand has 111 places, 197 transitions, 2506 flow. Second operand 7 states and 856 transitions. [2023-08-24 14:43:42,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 217 transitions, 2897 flow [2023-08-24 14:43:42,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 217 transitions, 2803 flow, removed 16 selfloop flow, removed 11 redundant places. [2023-08-24 14:43:42,919 INFO L231 Difference]: Finished difference. Result has 98 places, 177 transitions, 2273 flow [2023-08-24 14:43:42,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2273, PETRI_PLACES=98, PETRI_TRANSITIONS=177} [2023-08-24 14:43:42,920 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 51 predicate places. [2023-08-24 14:43:42,920 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 177 transitions, 2273 flow [2023-08-24 14:43:42,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:43:42,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:42,921 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] [2023-08-24 14:43:42,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 14:43:42,921 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 14:43:42,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash 492200084, now seen corresponding path program 10 times [2023-08-24 14:43:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:42,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538270999] [2023-08-24 14:43:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:42,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:43,155 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 14:43:43,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:43,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538270999] [2023-08-24 14:43:43,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538270999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:43,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:43,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 14:43:43,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107302343] [2023-08-24 14:43:43,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:43,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 14:43:43,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 14:43:43,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-24 14:43:43,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:43,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 177 transitions, 2273 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 14:43:43,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:43,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:43,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:44,124 INFO L124 PetriNetUnfolderBase]: 3745/7062 cut-off events. [2023-08-24 14:43:44,124 INFO L125 PetriNetUnfolderBase]: For 47706/49246 co-relation queries the response was YES. [2023-08-24 14:43:44,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34099 conditions, 7062 events. 3745/7062 cut-off events. For 47706/49246 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 53422 event pairs, 781 based on Foata normal form. 400/7304 useless extension candidates. Maximal degree in co-relation 16398. Up to 4125 conditions per place. [2023-08-24 14:43:44,187 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 168 selfloop transitions, 76 changer transitions 6/262 dead transitions. [2023-08-24 14:43:44,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 262 transitions, 3470 flow [2023-08-24 14:43:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 14:43:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 14:43:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1338 transitions. [2023-08-24 14:43:44,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49850968703427717 [2023-08-24 14:43:44,191 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1338 transitions. [2023-08-24 14:43:44,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1338 transitions. [2023-08-24 14:43:44,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:44,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1338 transitions. [2023-08-24 14:43:44,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 121.63636363636364) internal successors, (1338), 11 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 14:43:44,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states 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 14:43:44,199 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states 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 14:43:44,199 INFO L175 Difference]: Start difference. First operand has 98 places, 177 transitions, 2273 flow. Second operand 11 states and 1338 transitions. [2023-08-24 14:43:44,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 262 transitions, 3470 flow [2023-08-24 14:43:44,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 262 transitions, 3448 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-24 14:43:44,274 INFO L231 Difference]: Finished difference. Result has 109 places, 196 transitions, 2755 flow [2023-08-24 14:43:44,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2755, PETRI_PLACES=109, PETRI_TRANSITIONS=196} [2023-08-24 14:43:44,275 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 62 predicate places. [2023-08-24 14:43:44,275 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 196 transitions, 2755 flow [2023-08-24 14:43:44,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 14:43:44,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:44,276 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] [2023-08-24 14:43:44,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 14:43:44,276 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 14:43:44,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash -348244088, now seen corresponding path program 11 times [2023-08-24 14:43:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:44,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818117018] [2023-08-24 14:43:44,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:44,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:44,558 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 14:43:44,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:44,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818117018] [2023-08-24 14:43:44,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818117018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:44,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 14:43:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961574681] [2023-08-24 14:43:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:44,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 14:43:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 14:43:44,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-24 14:43:44,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:44,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 196 transitions, 2755 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states 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 14:43:44,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:44,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:44,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:45,679 INFO L124 PetriNetUnfolderBase]: 3727/7018 cut-off events. [2023-08-24 14:43:45,679 INFO L125 PetriNetUnfolderBase]: For 56337/58231 co-relation queries the response was YES. [2023-08-24 14:43:45,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35864 conditions, 7018 events. 3727/7018 cut-off events. For 56337/58231 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 53094 event pairs, 949 based on Foata normal form. 278/7138 useless extension candidates. Maximal degree in co-relation 16986. Up to 5188 conditions per place. [2023-08-24 14:43:45,724 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 183 selfloop transitions, 58 changer transitions 1/254 dead transitions. [2023-08-24 14:43:45,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 254 transitions, 3550 flow [2023-08-24 14:43:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 14:43:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 14:43:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1676 transitions. [2023-08-24 14:43:45,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49063231850117095 [2023-08-24 14:43:45,729 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1676 transitions. [2023-08-24 14:43:45,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1676 transitions. [2023-08-24 14:43:45,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:45,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1676 transitions. [2023-08-24 14:43:45,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 119.71428571428571) internal successors, (1676), 14 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 14:43:45,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 244.0) internal successors, (3660), 15 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states 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 14:43:45,739 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 244.0) internal successors, (3660), 15 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states 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 14:43:45,739 INFO L175 Difference]: Start difference. First operand has 109 places, 196 transitions, 2755 flow. Second operand 14 states and 1676 transitions. [2023-08-24 14:43:45,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 254 transitions, 3550 flow [2023-08-24 14:43:45,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 254 transitions, 3458 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-24 14:43:45,828 INFO L231 Difference]: Finished difference. Result has 119 places, 199 transitions, 2828 flow [2023-08-24 14:43:45,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2663, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2828, PETRI_PLACES=119, PETRI_TRANSITIONS=199} [2023-08-24 14:43:45,828 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 72 predicate places. [2023-08-24 14:43:45,828 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 199 transitions, 2828 flow [2023-08-24 14:43:45,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states 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 14:43:45,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:45,829 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] [2023-08-24 14:43:45,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 14:43:45,829 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 14:43:45,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1375369862, now seen corresponding path program 12 times [2023-08-24 14:43:45,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:45,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819575248] [2023-08-24 14:43:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:45,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:45,997 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 14:43:45,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:45,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819575248] [2023-08-24 14:43:45,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819575248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:45,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:45,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 14:43:45,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967481893] [2023-08-24 14:43:45,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:45,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 14:43:46,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 14:43:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 14:43:46,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 14:43:46,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 199 transitions, 2828 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 14:43:46,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:46,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 14:43:46,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:47,004 INFO L124 PetriNetUnfolderBase]: 3512/6823 cut-off events. [2023-08-24 14:43:47,004 INFO L125 PetriNetUnfolderBase]: For 57669/59717 co-relation queries the response was YES. [2023-08-24 14:43:47,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34929 conditions, 6823 events. 3512/6823 cut-off events. For 57669/59717 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 53682 event pairs, 378 based on Foata normal form. 1059/7673 useless extension candidates. Maximal degree in co-relation 17000. Up to 1997 conditions per place. [2023-08-24 14:43:47,050 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 112 selfloop transitions, 170 changer transitions 10/304 dead transitions. [2023-08-24 14:43:47,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 304 transitions, 4224 flow [2023-08-24 14:43:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 14:43:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 14:43:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1041 transitions. [2023-08-24 14:43:47,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5332991803278688 [2023-08-24 14:43:47,055 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1041 transitions. [2023-08-24 14:43:47,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1041 transitions. [2023-08-24 14:43:47,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:47,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1041 transitions. [2023-08-24 14:43:47,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.125) internal successors, (1041), 8 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states 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 14:43:47,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 14:43:47,061 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 14:43:47,061 INFO L175 Difference]: Start difference. First operand has 119 places, 199 transitions, 2828 flow. Second operand 8 states and 1041 transitions. [2023-08-24 14:43:47,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 304 transitions, 4224 flow [2023-08-24 14:43:47,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 304 transitions, 4101 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-24 14:43:47,156 INFO L231 Difference]: Finished difference. Result has 123 places, 220 transitions, 3492 flow [2023-08-24 14:43:47,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3492, PETRI_PLACES=123, PETRI_TRANSITIONS=220} [2023-08-24 14:43:47,157 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2023-08-24 14:43:47,157 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 220 transitions, 3492 flow [2023-08-24 14:43:47,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 14:43:47,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:47,158 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] [2023-08-24 14:43:47,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 14:43:47,158 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 14:43:47,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1329701130, now seen corresponding path program 13 times [2023-08-24 14:43:47,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:47,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861097445] [2023-08-24 14:43:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:47,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:47,314 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 14:43:47,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:47,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861097445] [2023-08-24 14:43:47,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861097445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:47,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:47,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 14:43:47,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994006390] [2023-08-24 14:43:47,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:47,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 14:43:47,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:47,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 14:43:47,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 14:43:47,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 14:43:47,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 220 transitions, 3492 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 14:43:47,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:47,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 14:43:47,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:48,008 INFO L124 PetriNetUnfolderBase]: 2291/4704 cut-off events. [2023-08-24 14:43:48,008 INFO L125 PetriNetUnfolderBase]: For 51187/52627 co-relation queries the response was YES. [2023-08-24 14:43:48,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27068 conditions, 4704 events. 2291/4704 cut-off events. For 51187/52627 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36065 event pairs, 219 based on Foata normal form. 937/5581 useless extension candidates. Maximal degree in co-relation 15438. Up to 1303 conditions per place. [2023-08-24 14:43:48,035 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 104 selfloop transitions, 164 changer transitions 57/337 dead transitions. [2023-08-24 14:43:48,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 337 transitions, 5526 flow [2023-08-24 14:43:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 14:43:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 14:43:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1033 transitions. [2023-08-24 14:43:48,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292008196721312 [2023-08-24 14:43:48,037 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1033 transitions. [2023-08-24 14:43:48,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1033 transitions. [2023-08-24 14:43:48,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:48,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1033 transitions. [2023-08-24 14:43:48,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.125) internal successors, (1033), 8 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states 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 14:43:48,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 14:43:48,042 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 14:43:48,042 INFO L175 Difference]: Start difference. First operand has 123 places, 220 transitions, 3492 flow. Second operand 8 states and 1033 transitions. [2023-08-24 14:43:48,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 337 transitions, 5526 flow [2023-08-24 14:43:48,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 337 transitions, 5389 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-24 14:43:48,118 INFO L231 Difference]: Finished difference. Result has 130 places, 215 transitions, 3758 flow [2023-08-24 14:43:48,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3758, PETRI_PLACES=130, PETRI_TRANSITIONS=215} [2023-08-24 14:43:48,119 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 83 predicate places. [2023-08-24 14:43:48,119 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 215 transitions, 3758 flow [2023-08-24 14:43:48,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 14:43:48,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:48,120 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] [2023-08-24 14:43:48,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 14:43:48,120 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 14:43:48,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:48,120 INFO L85 PathProgramCache]: Analyzing trace with hash -707740490, now seen corresponding path program 14 times [2023-08-24 14:43:48,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:48,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551766220] [2023-08-24 14:43:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:48,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:48,294 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 14:43:48,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:48,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551766220] [2023-08-24 14:43:48,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551766220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:48,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:48,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 14:43:48,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796811180] [2023-08-24 14:43:48,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:48,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 14:43:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 14:43:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-24 14:43:48,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 14:43:48,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 215 transitions, 3758 flow. Second operand has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 14:43:48,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:48,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 14:43:48,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:49,025 INFO L124 PetriNetUnfolderBase]: 1813/3828 cut-off events. [2023-08-24 14:43:49,025 INFO L125 PetriNetUnfolderBase]: For 47877/48713 co-relation queries the response was YES. [2023-08-24 14:43:49,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23003 conditions, 3828 events. 1813/3828 cut-off events. For 47877/48713 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 28692 event pairs, 172 based on Foata normal form. 468/4232 useless extension candidates. Maximal degree in co-relation 10659. Up to 1021 conditions per place. [2023-08-24 14:43:49,050 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 85 selfloop transitions, 195 changer transitions 30/322 dead transitions. [2023-08-24 14:43:49,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 322 transitions, 5511 flow [2023-08-24 14:43:49,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 14:43:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 14:43:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-08-24 14:43:49,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195810564663024 [2023-08-24 14:43:49,052 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-08-24 14:43:49,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-08-24 14:43:49,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:49,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-08-24 14:43:49,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 14:43:49,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 14:43:49,057 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 14:43:49,057 INFO L175 Difference]: Start difference. First operand has 130 places, 215 transitions, 3758 flow. Second operand 9 states and 1141 transitions. [2023-08-24 14:43:49,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 322 transitions, 5511 flow [2023-08-24 14:43:49,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 322 transitions, 5367 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-24 14:43:49,145 INFO L231 Difference]: Finished difference. Result has 136 places, 232 transitions, 4324 flow [2023-08-24 14:43:49,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=136, PETRI_TRANSITIONS=232} [2023-08-24 14:43:49,147 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 89 predicate places. [2023-08-24 14:43:49,147 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 232 transitions, 4324 flow [2023-08-24 14:43:49,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 14:43:49,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:49,147 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] [2023-08-24 14:43:49,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 14:43:49,148 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 14:43:49,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:49,148 INFO L85 PathProgramCache]: Analyzing trace with hash 476852654, now seen corresponding path program 15 times [2023-08-24 14:43:49,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:49,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945146695] [2023-08-24 14:43:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:49,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:49,358 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 14:43:49,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945146695] [2023-08-24 14:43:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945146695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:49,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:49,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 14:43:49,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626899259] [2023-08-24 14:43:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:49,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 14:43:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 14:43:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-24 14:43:49,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:49,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 232 transitions, 4324 flow. Second operand has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 14:43:49,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:49,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:49,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:50,170 INFO L124 PetriNetUnfolderBase]: 1673/3572 cut-off events. [2023-08-24 14:43:50,170 INFO L125 PetriNetUnfolderBase]: For 52539/53347 co-relation queries the response was YES. [2023-08-24 14:43:50,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22449 conditions, 3572 events. 1673/3572 cut-off events. For 52539/53347 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 26113 event pairs, 414 based on Foata normal form. 152/3690 useless extension candidates. Maximal degree in co-relation 8497. Up to 2476 conditions per place. [2023-08-24 14:43:50,187 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 222 selfloop transitions, 59 changer transitions 8/301 dead transitions. [2023-08-24 14:43:50,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 301 transitions, 5306 flow [2023-08-24 14:43:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 14:43:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 14:43:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2249 transitions. [2023-08-24 14:43:50,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48511647972389993 [2023-08-24 14:43:50,190 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2249 transitions. [2023-08-24 14:43:50,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2249 transitions. [2023-08-24 14:43:50,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:50,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2249 transitions. [2023-08-24 14:43:50,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 118.36842105263158) internal successors, (2249), 19 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states 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 14:43:50,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 244.0) internal successors, (4880), 20 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states 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 14:43:50,199 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 244.0) internal successors, (4880), 20 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states 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 14:43:50,199 INFO L175 Difference]: Start difference. First operand has 136 places, 232 transitions, 4324 flow. Second operand 19 states and 2249 transitions. [2023-08-24 14:43:50,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 301 transitions, 5306 flow [2023-08-24 14:43:50,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 301 transitions, 5128 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-08-24 14:43:50,289 INFO L231 Difference]: Finished difference. Result has 151 places, 232 transitions, 4238 flow [2023-08-24 14:43:50,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4238, PETRI_PLACES=151, PETRI_TRANSITIONS=232} [2023-08-24 14:43:50,289 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 104 predicate places. [2023-08-24 14:43:50,289 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 232 transitions, 4238 flow [2023-08-24 14:43:50,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 14:43:50,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:50,290 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] [2023-08-24 14:43:50,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 14:43:50,290 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 14:43:50,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1218042176, now seen corresponding path program 16 times [2023-08-24 14:43:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501122399] [2023-08-24 14:43:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:50,456 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 14:43:50,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501122399] [2023-08-24 14:43:50,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501122399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:50,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:50,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 14:43:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186311781] [2023-08-24 14:43:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:50,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 14:43:50,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:50,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 14:43:50,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-24 14:43:50,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 14:43:50,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 232 transitions, 4238 flow. Second operand has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 14:43:50,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:50,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 14:43:50,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:51,191 INFO L124 PetriNetUnfolderBase]: 1633/3484 cut-off events. [2023-08-24 14:43:51,191 INFO L125 PetriNetUnfolderBase]: For 51049/51993 co-relation queries the response was YES. [2023-08-24 14:43:51,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21578 conditions, 3484 events. 1633/3484 cut-off events. For 51049/51993 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 25736 event pairs, 167 based on Foata normal form. 492/3916 useless extension candidates. Maximal degree in co-relation 8350. Up to 948 conditions per place. [2023-08-24 14:43:51,208 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 85 selfloop transitions, 195 changer transitions 7/299 dead transitions. [2023-08-24 14:43:51,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 299 transitions, 5298 flow [2023-08-24 14:43:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 14:43:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 14:43:51,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-08-24 14:43:51,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195810564663024 [2023-08-24 14:43:51,209 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-08-24 14:43:51,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-08-24 14:43:51,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:51,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-08-24 14:43:51,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 14:43:51,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 14:43:51,213 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states 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 14:43:51,213 INFO L175 Difference]: Start difference. First operand has 151 places, 232 transitions, 4238 flow. Second operand 9 states and 1141 transitions. [2023-08-24 14:43:51,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 299 transitions, 5298 flow [2023-08-24 14:43:51,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 299 transitions, 5145 flow, removed 6 selfloop flow, removed 16 redundant places. [2023-08-24 14:43:51,279 INFO L231 Difference]: Finished difference. Result has 142 places, 232 transitions, 4490 flow [2023-08-24 14:43:51,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4070, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4490, PETRI_PLACES=142, PETRI_TRANSITIONS=232} [2023-08-24 14:43:51,280 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 95 predicate places. [2023-08-24 14:43:51,280 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 232 transitions, 4490 flow [2023-08-24 14:43:51,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 14:43:51,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:51,280 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] [2023-08-24 14:43:51,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 14:43:51,281 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 14:43:51,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:51,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1268936102, now seen corresponding path program 17 times [2023-08-24 14:43:51,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:51,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891030455] [2023-08-24 14:43:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:51,477 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 14:43:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891030455] [2023-08-24 14:43:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891030455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:51,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 14:43:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527827709] [2023-08-24 14:43:51,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:51,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 14:43:51,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 14:43:51,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-24 14:43:51,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 14:43:51,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 232 transitions, 4490 flow. Second operand has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 14:43:51,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:51,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 14:43:51,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:52,191 INFO L124 PetriNetUnfolderBase]: 1680/3621 cut-off events. [2023-08-24 14:43:52,191 INFO L125 PetriNetUnfolderBase]: For 62888/63748 co-relation queries the response was YES. [2023-08-24 14:43:52,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23748 conditions, 3621 events. 1680/3621 cut-off events. For 62888/63748 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27003 event pairs, 432 based on Foata normal form. 166/3745 useless extension candidates. Maximal degree in co-relation 9133. Up to 2393 conditions per place. [2023-08-24 14:43:52,214 INFO L140 encePairwiseOnDemand]: 235/244 looper letters, 205 selfloop transitions, 46 changer transitions 46/309 dead transitions. [2023-08-24 14:43:52,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 309 transitions, 5869 flow [2023-08-24 14:43:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 14:43:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 14:43:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2025 transitions. [2023-08-24 14:43:52,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881870781099325 [2023-08-24 14:43:52,216 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2025 transitions. [2023-08-24 14:43:52,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2025 transitions. [2023-08-24 14:43:52,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:52,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2025 transitions. [2023-08-24 14:43:52,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 119.11764705882354) internal successors, (2025), 17 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states 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 14:43:52,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 244.0) internal successors, (4392), 18 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states 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 14:43:52,221 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 244.0) internal successors, (4392), 18 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states 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 14:43:52,221 INFO L175 Difference]: Start difference. First operand has 142 places, 232 transitions, 4490 flow. Second operand 17 states and 2025 transitions. [2023-08-24 14:43:52,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 309 transitions, 5869 flow [2023-08-24 14:43:52,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 309 transitions, 5777 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-24 14:43:52,291 INFO L231 Difference]: Finished difference. Result has 155 places, 222 transitions, 4366 flow [2023-08-24 14:43:52,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4366, PETRI_PLACES=155, PETRI_TRANSITIONS=222} [2023-08-24 14:43:52,292 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 108 predicate places. [2023-08-24 14:43:52,292 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 222 transitions, 4366 flow [2023-08-24 14:43:52,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 14:43:52,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:52,292 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] [2023-08-24 14:43:52,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 14:43:52,293 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 14:43:52,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash 391645214, now seen corresponding path program 18 times [2023-08-24 14:43:52,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:52,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920171117] [2023-08-24 14:43:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:52,459 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 14:43:52,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:52,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920171117] [2023-08-24 14:43:52,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920171117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:52,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:52,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 14:43:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320772984] [2023-08-24 14:43:52,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:52,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 14:43:52,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:52,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 14:43:52,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-24 14:43:52,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 14:43:52,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 222 transitions, 4366 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 14:43:52,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:52,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 14:43:52,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:53,187 INFO L124 PetriNetUnfolderBase]: 1558/3376 cut-off events. [2023-08-24 14:43:53,187 INFO L125 PetriNetUnfolderBase]: For 59964/60978 co-relation queries the response was YES. [2023-08-24 14:43:53,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22277 conditions, 3376 events. 1558/3376 cut-off events. For 59964/60978 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 25266 event pairs, 176 based on Foata normal form. 532/3850 useless extension candidates. Maximal degree in co-relation 7874. Up to 915 conditions per place. [2023-08-24 14:43:53,215 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 85 selfloop transitions, 184 changer transitions 22/302 dead transitions. [2023-08-24 14:43:53,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 302 transitions, 5666 flow [2023-08-24 14:43:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 14:43:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 14:43:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1494 transitions. [2023-08-24 14:43:53,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102459016393442 [2023-08-24 14:43:53,218 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1494 transitions. [2023-08-24 14:43:53,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1494 transitions. [2023-08-24 14:43:53,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:53,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1494 transitions. [2023-08-24 14:43:53,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 124.5) internal successors, (1494), 12 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states 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 14:43:53,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states 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 14:43:53,223 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states 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 14:43:53,223 INFO L175 Difference]: Start difference. First operand has 155 places, 222 transitions, 4366 flow. Second operand 12 states and 1494 transitions. [2023-08-24 14:43:53,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 302 transitions, 5666 flow [2023-08-24 14:43:53,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 302 transitions, 5541 flow, removed 17 selfloop flow, removed 11 redundant places. [2023-08-24 14:43:53,322 INFO L231 Difference]: Finished difference. Result has 150 places, 218 transitions, 4520 flow [2023-08-24 14:43:53,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4520, PETRI_PLACES=150, PETRI_TRANSITIONS=218} [2023-08-24 14:43:53,323 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 103 predicate places. [2023-08-24 14:43:53,323 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 218 transitions, 4520 flow [2023-08-24 14:43:53,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 14:43:53,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:53,323 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] [2023-08-24 14:43:53,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 14:43:53,325 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 14:43:53,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:53,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1040144682, now seen corresponding path program 19 times [2023-08-24 14:43:53,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:53,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131127546] [2023-08-24 14:43:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:53,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:53,529 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 14:43:53,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:53,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131127546] [2023-08-24 14:43:53,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131127546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:53,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:53,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 14:43:53,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885968330] [2023-08-24 14:43:53,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:53,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 14:43:53,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:53,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 14:43:53,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-24 14:43:53,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 14:43:53,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 218 transitions, 4520 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 14:43:53,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:53,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 14:43:53,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:53,820 INFO L124 PetriNetUnfolderBase]: 346/797 cut-off events. [2023-08-24 14:43:53,820 INFO L125 PetriNetUnfolderBase]: For 15832/16142 co-relation queries the response was YES. [2023-08-24 14:43:53,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6356 conditions, 797 events. 346/797 cut-off events. For 15832/16142 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4932 event pairs, 6 based on Foata normal form. 296/1093 useless extension candidates. Maximal degree in co-relation 5144. Up to 211 conditions per place. [2023-08-24 14:43:53,825 INFO L140 encePairwiseOnDemand]: 236/244 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2023-08-24 14:43:53,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 130 transitions, 2617 flow [2023-08-24 14:43:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 14:43:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 14:43:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1436 transitions. [2023-08-24 14:43:53,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49043715846994534 [2023-08-24 14:43:53,827 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1436 transitions. [2023-08-24 14:43:53,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1436 transitions. [2023-08-24 14:43:53,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:53,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1436 transitions. [2023-08-24 14:43:53,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.66666666666667) internal successors, (1436), 12 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 14:43:53,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states 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 14:43:53,832 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states 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 14:43:53,832 INFO L175 Difference]: Start difference. First operand has 150 places, 218 transitions, 4520 flow. Second operand 12 states and 1436 transitions. [2023-08-24 14:43:53,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 130 transitions, 2617 flow [2023-08-24 14:43:53,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 130 transitions, 2291 flow, removed 23 selfloop flow, removed 21 redundant places. [2023-08-24 14:43:53,866 INFO L231 Difference]: Finished difference. Result has 123 places, 0 transitions, 0 flow [2023-08-24 14:43:53,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=123, PETRI_TRANSITIONS=0} [2023-08-24 14:43:53,866 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2023-08-24 14:43:53,866 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 0 transitions, 0 flow [2023-08-24 14:43:53,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 14:43:53,869 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 14:43:53,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-24 14:43:53,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 14:43:53,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 14:43:53,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 14:43:53,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 14:43:53,872 INFO L445 BasicCegarLoop]: Path program histogram: [19] [2023-08-24 14:43:53,874 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 14:43:53,874 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 14:43:53,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 02:43:53 BasicIcfg [2023-08-24 14:43:53,877 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 14:43:53,877 INFO L158 Benchmark]: Toolchain (without parser) took 31773.78ms. Allocated memory was 367.0MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 343.7MB in the beginning and 3.4GB in the end (delta: -3.1GB). Peak memory consumption was 591.7MB. Max. memory is 16.0GB. [2023-08-24 14:43:53,877 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 367.0MB. Free memory is still 343.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 14:43:53,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.07ms. Allocated memory is still 367.0MB. Free memory was 343.2MB in the beginning and 331.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 14:43:53,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.21ms. Allocated memory is still 367.0MB. Free memory was 331.7MB in the beginning and 329.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 14:43:53,878 INFO L158 Benchmark]: Boogie Preprocessor took 27.37ms. Allocated memory is still 367.0MB. Free memory was 329.8MB in the beginning and 328.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 14:43:53,878 INFO L158 Benchmark]: RCFGBuilder took 577.15ms. Allocated memory is still 367.0MB. Free memory was 328.2MB in the beginning and 305.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-24 14:43:53,878 INFO L158 Benchmark]: TraceAbstraction took 30934.06ms. Allocated memory was 367.0MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 304.1MB in the beginning and 3.4GB in the end (delta: -3.1GB). Peak memory consumption was 551.8MB. Max. memory is 16.0GB. [2023-08-24 14:43:53,879 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 367.0MB. Free memory is still 343.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 191.07ms. Allocated memory is still 367.0MB. Free memory was 343.2MB in the beginning and 331.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.21ms. Allocated memory is still 367.0MB. Free memory was 331.7MB in the beginning and 329.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.37ms. Allocated memory is still 367.0MB. Free memory was 329.8MB in the beginning and 328.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 577.15ms. Allocated memory is still 367.0MB. Free memory was 328.2MB in the beginning and 305.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 30934.06ms. Allocated memory was 367.0MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 304.1MB in the beginning and 3.4GB in the end (delta: -3.1GB). Peak memory consumption was 551.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 138 PlacesBefore, 47 PlacesAfterwards, 127 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 101 TotalNumberOfCompositions, 7253 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2918, independent: 2652, independent conditional: 0, independent unconditional: 2652, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 625, independent: 600, independent conditional: 0, independent unconditional: 600, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2918, independent: 2052, independent conditional: 0, independent unconditional: 2052, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 625, unknown conditional: 0, unknown unconditional: 625] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 138, Positive conditional cache size: 0, Positive unconditional cache size: 138, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 175 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: 30.8s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 21.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1119 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1119 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 381 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6086 IncrementalHoareTripleChecker+Invalid, 6467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 381 mSolverCounterUnsat, 9 mSDtfsCounter, 6086 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4520occurred in iteration=18, InterpolantAutomatonStates: 190, 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, 0.7s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 646 NumberOfCodeBlocks, 646 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 627 ConstructedInterpolants, 0 QuantifiedInterpolants, 2542 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 14:43:53,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...