/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/popl20-more-queue-add-3-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 15:52:51,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 15:52:51,597 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 15:52:51,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 15:52:51,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 15:52:51,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 15:52:51,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 15:52:51,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 15:52:51,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 15:52:51,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 15:52:51,631 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 15:52:51,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 15:52:51,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 15:52:51,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 15:52:51,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 15:52:51,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 15:52:51,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 15:52:51,633 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 15:52:51,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 15:52:51,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 15:52:51,633 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 15:52:51,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 15:52:51,634 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 15:52:51,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 15:52:51,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 15:52:51,635 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 15:52:51,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 15:52:51,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 15:52:51,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 15:52:51,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 15:52:51,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 15:52:51,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 15:52:51,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 15:52:51,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 15:52:51,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 15:52:51,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 15:52:51,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 15:52:51,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 15:52:51,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 15:52:51,898 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 15:52:51,903 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 15:52:51,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-08-24 15:52:52,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 15:52:53,040 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 15:52:53,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-08-24 15:52:53,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9487388/230330f4945c45519f61aeb82a165ebd/FLAGe19e213d1 [2023-08-24 15:52:53,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9487388/230330f4945c45519f61aeb82a165ebd [2023-08-24 15:52:53,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 15:52:53,059 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 15:52:53,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 15:52:53,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 15:52:53,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 15:52:53,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6773a148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53, skipping insertion in model container [2023-08-24 15:52:53,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,079 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 15:52:53,202 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2023-08-24 15:52:53,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 15:52:53,217 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 15:52:53,242 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2023-08-24 15:52:53,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 15:52:53,255 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 15:52:53,255 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 15:52:53,259 INFO L206 MainTranslator]: Completed translation [2023-08-24 15:52:53,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53 WrapperNode [2023-08-24 15:52:53,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 15:52:53,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 15:52:53,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 15:52:53,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 15:52:53,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,300 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 268 [2023-08-24 15:52:53,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 15:52:53,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 15:52:53,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 15:52:53,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 15:52:53,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 15:52:53,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 15:52:53,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 15:52:53,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 15:52:53,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (1/1) ... [2023-08-24 15:52:53,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 15:52:53,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:52:53,358 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 15:52:53,363 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 15:52:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 15:52:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 15:52:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 15:52:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 15:52:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 15:52:53,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 15:52:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 15:52:53,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 15:52:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 15:52:53,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 15:52:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 15:52:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 15:52:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 15:52:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 15:52:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 15:52:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 15:52:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 15:52:53,388 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 15:52:53,458 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 15:52:53,459 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 15:52:53,710 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 15:52:53,768 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 15:52:53,768 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-24 15:52:53,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:52:53 BoogieIcfgContainer [2023-08-24 15:52:53,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 15:52:53,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 15:52:53,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 15:52:53,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 15:52:53,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 03:52:53" (1/3) ... [2023-08-24 15:52:53,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2031a538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:52:53, skipping insertion in model container [2023-08-24 15:52:53,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:52:53" (2/3) ... [2023-08-24 15:52:53,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2031a538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:52:53, skipping insertion in model container [2023-08-24 15:52:53,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:52:53" (3/3) ... [2023-08-24 15:52:53,775 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2023-08-24 15:52:53,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 15:52:53,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 15:52:53,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 15:52:53,865 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 15:52:53,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 217 transitions, 458 flow [2023-08-24 15:52:53,981 INFO L124 PetriNetUnfolderBase]: 18/214 cut-off events. [2023-08-24 15:52:53,981 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 15:52:53,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 214 events. 18/214 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 133 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 176. Up to 3 conditions per place. [2023-08-24 15:52:53,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 217 transitions, 458 flow [2023-08-24 15:52:53,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 204 transitions, 426 flow [2023-08-24 15:52:53,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 15:52:54,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 204 transitions, 426 flow [2023-08-24 15:52:54,013 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 204 transitions, 426 flow [2023-08-24 15:52:54,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 204 transitions, 426 flow [2023-08-24 15:52:54,058 INFO L124 PetriNetUnfolderBase]: 18/204 cut-off events. [2023-08-24 15:52:54,058 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 15:52:54,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 204 events. 18/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 176. Up to 3 conditions per place. [2023-08-24 15:52:54,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 1960 [2023-08-24 15:52:59,832 INFO L134 LiptonReduction]: Checked pairs total: 2787 [2023-08-24 15:52:59,832 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-24 15:52:59,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 15:52:59,845 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;@1701bece, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 15:52:59,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 15:52:59,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 15:52:59,850 INFO L124 PetriNetUnfolderBase]: 6/27 cut-off events. [2023-08-24 15:52:59,850 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 15:52:59,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:52:59,851 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] [2023-08-24 15:52:59,851 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 1 more)] === [2023-08-24 15:52:59,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:52:59,854 INFO L85 PathProgramCache]: Analyzing trace with hash 790008732, now seen corresponding path program 1 times [2023-08-24 15:52:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:52:59,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646500723] [2023-08-24 15:52:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:52:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:52:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:00,001 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 15:53:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646500723] [2023-08-24 15:53:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646500723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:00,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 15:53:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544790804] [2023-08-24 15:53:00,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:00,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 15:53:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:00,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 15:53:00,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 15:53:00,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 433 [2023-08-24 15:53:00,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 15:53:00,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:00,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 433 [2023-08-24 15:53:00,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:00,113 INFO L124 PetriNetUnfolderBase]: 323/460 cut-off events. [2023-08-24 15:53:00,113 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-24 15:53:00,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 460 events. 323/460 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1338 event pairs, 190 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 765. Up to 460 conditions per place. [2023-08-24 15:53:00,118 INFO L140 encePairwiseOnDemand]: 432/433 looper letters, 26 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-08-24 15:53:00,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 124 flow [2023-08-24 15:53:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 15:53:00,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 15:53:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 411 transitions. [2023-08-24 15:53:00,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745958429561201 [2023-08-24 15:53:00,134 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 411 transitions. [2023-08-24 15:53:00,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 411 transitions. [2023-08-24 15:53:00,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:00,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 411 transitions. [2023-08-24 15:53:00,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 15:53:00,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states 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 15:53:00,146 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states 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 15:53:00,147 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 2 states and 411 transitions. [2023-08-24 15:53:00,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 124 flow [2023-08-24 15:53:00,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 15:53:00,151 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 60 flow [2023-08-24 15:53:00,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-24 15:53:00,154 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-24 15:53:00,154 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 60 flow [2023-08-24 15:53:00,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 15:53:00,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:00,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:53:00,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 15:53:00,155 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 1 more)] === [2023-08-24 15:53:00,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1996347239, now seen corresponding path program 1 times [2023-08-24 15:53:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:00,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823294449] [2023-08-24 15:53:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:00,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:00,452 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 15:53:00,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:00,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823294449] [2023-08-24 15:53:00,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823294449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:00,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:00,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 15:53:00,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338678631] [2023-08-24 15:53:00,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:00,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 15:53:00,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:00,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 15:53:00,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 15:53:00,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 433 [2023-08-24 15:53:00,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states 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 15:53:00,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:00,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 433 [2023-08-24 15:53:00,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:00,546 INFO L124 PetriNetUnfolderBase]: 339/498 cut-off events. [2023-08-24 15:53:00,546 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-24 15:53:00,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 498 events. 339/498 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1525 event pairs, 201 based on Foata normal form. 26/385 useless extension candidates. Maximal degree in co-relation 1014. Up to 460 conditions per place. [2023-08-24 15:53:00,548 INFO L140 encePairwiseOnDemand]: 427/433 looper letters, 25 selfloop transitions, 2 changer transitions 13/41 dead transitions. [2023-08-24 15:53:00,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 41 transitions, 171 flow [2023-08-24 15:53:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 15:53:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 15:53:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-08-24 15:53:00,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4058891454965358 [2023-08-24 15:53:00,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-08-24 15:53:00,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-08-24 15:53:00,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:00,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-08-24 15:53:00,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states 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 15:53:00,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 433.0) internal successors, (2165), 5 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states 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 15:53:00,555 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 433.0) internal successors, (2165), 5 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states 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 15:53:00,555 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 4 states and 703 transitions. [2023-08-24 15:53:00,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 41 transitions, 171 flow [2023-08-24 15:53:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 171 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 15:53:00,556 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 78 flow [2023-08-24 15:53:00,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-24 15:53:00,557 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-08-24 15:53:00,557 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 78 flow [2023-08-24 15:53:00,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states 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 15:53:00,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:00,557 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] [2023-08-24 15:53:00,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 15:53:00,558 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 1 more)] === [2023-08-24 15:53:00,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:00,558 INFO L85 PathProgramCache]: Analyzing trace with hash 863825311, now seen corresponding path program 1 times [2023-08-24 15:53:00,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:00,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509170953] [2023-08-24 15:53:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:00,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509170953] [2023-08-24 15:53:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509170953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:00,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:00,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 15:53:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936251424] [2023-08-24 15:53:00,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:00,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 15:53:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:00,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 15:53:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 15:53:00,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 433 [2023-08-24 15:53:00,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 15:53:00,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:00,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 433 [2023-08-24 15:53:00,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:00,816 INFO L124 PetriNetUnfolderBase]: 452/664 cut-off events. [2023-08-24 15:53:00,816 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-08-24 15:53:00,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 664 events. 452/664 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2347 event pairs, 280 based on Foata normal form. 46/537 useless extension candidates. Maximal degree in co-relation 1624. Up to 461 conditions per place. [2023-08-24 15:53:00,818 INFO L140 encePairwiseOnDemand]: 426/433 looper letters, 26 selfloop transitions, 2 changer transitions 14/43 dead transitions. [2023-08-24 15:53:00,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 202 flow [2023-08-24 15:53:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 15:53:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 15:53:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-24 15:53:00,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40704387990762125 [2023-08-24 15:53:00,820 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-24 15:53:00,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-24 15:53:00,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:00,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-24 15:53:00,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 15:53:00,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 433.0) internal successors, (2165), 5 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states 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 15:53:00,825 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 433.0) internal successors, (2165), 5 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states 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 15:53:00,825 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 78 flow. Second operand 4 states and 705 transitions. [2023-08-24 15:53:00,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 202 flow [2023-08-24 15:53:00,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 43 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 15:53:00,827 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 94 flow [2023-08-24 15:53:00,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-24 15:53:00,828 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-24 15:53:00,830 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 94 flow [2023-08-24 15:53:00,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 15:53:00,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:00,831 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] [2023-08-24 15:53:00,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 15:53:00,831 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 1 more)] === [2023-08-24 15:53:00,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash 167495755, now seen corresponding path program 1 times [2023-08-24 15:53:00,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:00,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330056157] [2023-08-24 15:53:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:00,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:01,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:01,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330056157] [2023-08-24 15:53:01,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330056157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:01,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:01,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 15:53:01,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971307697] [2023-08-24 15:53:01,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:01,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 15:53:01,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:01,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 15:53:01,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-24 15:53:01,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 433 [2023-08-24 15:53:01,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 94 flow. Second operand has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 15:53:01,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:01,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 433 [2023-08-24 15:53:01,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:01,826 INFO L124 PetriNetUnfolderBase]: 565/811 cut-off events. [2023-08-24 15:53:01,826 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-08-24 15:53:01,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 811 events. 565/811 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2613 event pairs, 15 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 2124. Up to 572 conditions per place. [2023-08-24 15:53:01,829 INFO L140 encePairwiseOnDemand]: 422/433 looper letters, 67 selfloop transitions, 28 changer transitions 3/98 dead transitions. [2023-08-24 15:53:01,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 98 transitions, 501 flow [2023-08-24 15:53:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 15:53:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 15:53:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1627 transitions. [2023-08-24 15:53:01,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41750064151911725 [2023-08-24 15:53:01,833 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1627 transitions. [2023-08-24 15:53:01,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1627 transitions. [2023-08-24 15:53:01,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:01,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1627 transitions. [2023-08-24 15:53:01,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.77777777777777) internal successors, (1627), 9 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 15:53:01,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 433.0) internal successors, (4330), 10 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states 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 15:53:01,841 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 433.0) internal successors, (4330), 10 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states 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 15:53:01,841 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 94 flow. Second operand 9 states and 1627 transitions. [2023-08-24 15:53:01,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 98 transitions, 501 flow [2023-08-24 15:53:01,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 98 transitions, 497 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 15:53:01,844 INFO L231 Difference]: Finished difference. Result has 45 places, 55 transitions, 286 flow [2023-08-24 15:53:01,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=45, PETRI_TRANSITIONS=55} [2023-08-24 15:53:01,845 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2023-08-24 15:53:01,845 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 55 transitions, 286 flow [2023-08-24 15:53:01,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 15:53:01,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:01,847 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] [2023-08-24 15:53:01,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 15:53:01,847 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 1 more)] === [2023-08-24 15:53:01,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1283745355, now seen corresponding path program 2 times [2023-08-24 15:53:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:01,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080159691] [2023-08-24 15:53:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:01,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:01,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080159691] [2023-08-24 15:53:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080159691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:01,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:01,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 15:53:01,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036134129] [2023-08-24 15:53:01,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:01,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 15:53:01,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:01,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 15:53:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 15:53:01,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 433 [2023-08-24 15:53:01,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 55 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 15:53:01,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:01,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 433 [2023-08-24 15:53:01,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:02,065 INFO L124 PetriNetUnfolderBase]: 456/665 cut-off events. [2023-08-24 15:53:02,065 INFO L125 PetriNetUnfolderBase]: For 474/487 co-relation queries the response was YES. [2023-08-24 15:53:02,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 665 events. 456/665 cut-off events. For 474/487 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1987 event pairs, 93 based on Foata normal form. 27/540 useless extension candidates. Maximal degree in co-relation 2272. Up to 581 conditions per place. [2023-08-24 15:53:02,068 INFO L140 encePairwiseOnDemand]: 429/433 looper letters, 55 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-08-24 15:53:02,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 420 flow [2023-08-24 15:53:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 15:53:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 15:53:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-08-24 15:53:02,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565050038491147 [2023-08-24 15:53:02,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-08-24 15:53:02,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-08-24 15:53:02,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:02,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-08-24 15:53:02,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 15:53:02,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:53:02,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:53:02,074 INFO L175 Difference]: Start difference. First operand has 45 places, 55 transitions, 286 flow. Second operand 3 states and 593 transitions. [2023-08-24 15:53:02,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 420 flow [2023-08-24 15:53:02,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 62 transitions, 360 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-08-24 15:53:02,080 INFO L231 Difference]: Finished difference. Result has 46 places, 53 transitions, 235 flow [2023-08-24 15:53:02,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=46, PETRI_TRANSITIONS=53} [2023-08-24 15:53:02,082 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-08-24 15:53:02,082 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 53 transitions, 235 flow [2023-08-24 15:53:02,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 15:53:02,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:02,082 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] [2023-08-24 15:53:02,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 15:53:02,082 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 1 more)] === [2023-08-24 15:53:02,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:02,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1753967349, now seen corresponding path program 3 times [2023-08-24 15:53:02,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:02,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739706112] [2023-08-24 15:53:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:02,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:02,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739706112] [2023-08-24 15:53:02,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739706112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:02,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:02,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 15:53:02,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532693073] [2023-08-24 15:53:02,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:02,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 15:53:02,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 15:53:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-24 15:53:02,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 433 [2023-08-24 15:53:02,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 53 transitions, 235 flow. Second operand has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 15:53:02,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:02,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 433 [2023-08-24 15:53:02,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:03,019 INFO L124 PetriNetUnfolderBase]: 575/842 cut-off events. [2023-08-24 15:53:03,019 INFO L125 PetriNetUnfolderBase]: For 457/457 co-relation queries the response was YES. [2023-08-24 15:53:03,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 842 events. 575/842 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2709 event pairs, 71 based on Foata normal form. 1/661 useless extension candidates. Maximal degree in co-relation 2728. Up to 703 conditions per place. [2023-08-24 15:53:03,023 INFO L140 encePairwiseOnDemand]: 422/433 looper letters, 74 selfloop transitions, 24 changer transitions 3/101 dead transitions. [2023-08-24 15:53:03,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 101 transitions, 600 flow [2023-08-24 15:53:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 15:53:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 15:53:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1613 transitions. [2023-08-24 15:53:03,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413908134462407 [2023-08-24 15:53:03,026 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1613 transitions. [2023-08-24 15:53:03,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1613 transitions. [2023-08-24 15:53:03,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:03,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1613 transitions. [2023-08-24 15:53:03,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.22222222222223) internal successors, (1613), 9 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states 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 15:53:03,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 433.0) internal successors, (4330), 10 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states 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 15:53:03,033 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 433.0) internal successors, (4330), 10 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states 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 15:53:03,033 INFO L175 Difference]: Start difference. First operand has 46 places, 53 transitions, 235 flow. Second operand 9 states and 1613 transitions. [2023-08-24 15:53:03,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 101 transitions, 600 flow [2023-08-24 15:53:03,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 101 transitions, 573 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-24 15:53:03,037 INFO L231 Difference]: Finished difference. Result has 56 places, 68 transitions, 375 flow [2023-08-24 15:53:03,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=375, PETRI_PLACES=56, PETRI_TRANSITIONS=68} [2023-08-24 15:53:03,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2023-08-24 15:53:03,037 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 68 transitions, 375 flow [2023-08-24 15:53:03,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 15:53:03,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:03,038 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] [2023-08-24 15:53:03,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 15:53:03,038 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 1 more)] === [2023-08-24 15:53:03,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1926398911, now seen corresponding path program 4 times [2023-08-24 15:53:03,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:03,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6164288] [2023-08-24 15:53:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:03,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:03,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:03,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6164288] [2023-08-24 15:53:03,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6164288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:03,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:03,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 15:53:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177219540] [2023-08-24 15:53:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 15:53:03,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 15:53:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 15:53:03,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 433 [2023-08-24 15:53:03,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:53:03,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:03,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 433 [2023-08-24 15:53:03,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:03,239 INFO L124 PetriNetUnfolderBase]: 479/745 cut-off events. [2023-08-24 15:53:03,239 INFO L125 PetriNetUnfolderBase]: For 751/761 co-relation queries the response was YES. [2023-08-24 15:53:03,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 745 events. 479/745 cut-off events. For 751/761 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2629 event pairs, 157 based on Foata normal form. 88/695 useless extension candidates. Maximal degree in co-relation 2466. Up to 449 conditions per place. [2023-08-24 15:53:03,242 INFO L140 encePairwiseOnDemand]: 428/433 looper letters, 54 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2023-08-24 15:53:03,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 447 flow [2023-08-24 15:53:03,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 15:53:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 15:53:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-24 15:53:03,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46420323325635104 [2023-08-24 15:53:03,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-24 15:53:03,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-24 15:53:03,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:03,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-24 15:53:03,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states 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 15:53:03,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:53:03,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:53:03,247 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 375 flow. Second operand 3 states and 603 transitions. [2023-08-24 15:53:03,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 447 flow [2023-08-24 15:53:03,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 408 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-24 15:53:03,252 INFO L231 Difference]: Finished difference. Result has 52 places, 55 transitions, 287 flow [2023-08-24 15:53:03,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=52, PETRI_TRANSITIONS=55} [2023-08-24 15:53:03,253 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2023-08-24 15:53:03,253 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 55 transitions, 287 flow [2023-08-24 15:53:03,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:53:03,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:03,254 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] [2023-08-24 15:53:03,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 15:53:03,254 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 1 more)] === [2023-08-24 15:53:03,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash 115801611, now seen corresponding path program 5 times [2023-08-24 15:53:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933500508] [2023-08-24 15:53:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:03,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:03,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:03,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933500508] [2023-08-24 15:53:03,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933500508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:03,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:03,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 15:53:03,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015903270] [2023-08-24 15:53:03,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:03,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 15:53:03,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:03,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 15:53:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-24 15:53:03,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 433 [2023-08-24 15:53:03,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 287 flow. Second operand has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 15:53:03,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:03,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 433 [2023-08-24 15:53:03,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:04,015 INFO L124 PetriNetUnfolderBase]: 541/847 cut-off events. [2023-08-24 15:53:04,016 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2023-08-24 15:53:04,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 847 events. 541/847 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3053 event pairs, 129 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2940. Up to 708 conditions per place. [2023-08-24 15:53:04,020 INFO L140 encePairwiseOnDemand]: 422/433 looper letters, 73 selfloop transitions, 19 changer transitions 3/95 dead transitions. [2023-08-24 15:53:04,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 638 flow [2023-08-24 15:53:04,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 15:53:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 15:53:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1602 transitions. [2023-08-24 15:53:04,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110854503464203 [2023-08-24 15:53:04,023 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1602 transitions. [2023-08-24 15:53:04,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1602 transitions. [2023-08-24 15:53:04,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:04,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1602 transitions. [2023-08-24 15:53:04,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 15:53:04,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 433.0) internal successors, (4330), 10 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states 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 15:53:04,056 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 433.0) internal successors, (4330), 10 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states 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 15:53:04,056 INFO L175 Difference]: Start difference. First operand has 52 places, 55 transitions, 287 flow. Second operand 9 states and 1602 transitions. [2023-08-24 15:53:04,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 638 flow [2023-08-24 15:53:04,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 15:53:04,059 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 445 flow [2023-08-24 15:53:04,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=445, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-08-24 15:53:04,060 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-08-24 15:53:04,060 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 445 flow [2023-08-24 15:53:04,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 15:53:04,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:04,060 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] [2023-08-24 15:53:04,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 15:53:04,061 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 1 more)] === [2023-08-24 15:53:04,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1684018237, now seen corresponding path program 6 times [2023-08-24 15:53:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:04,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603590879] [2023-08-24 15:53:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:04,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:04,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:04,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603590879] [2023-08-24 15:53:04,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603590879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:04,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:53:04,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 15:53:04,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234249832] [2023-08-24 15:53:04,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:04,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 15:53:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:04,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 15:53:04,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-24 15:53:04,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 433 [2023-08-24 15:53:04,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 445 flow. Second operand has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 15:53:04,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:04,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 433 [2023-08-24 15:53:04,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:04,902 INFO L124 PetriNetUnfolderBase]: 616/971 cut-off events. [2023-08-24 15:53:04,902 INFO L125 PetriNetUnfolderBase]: For 1423/1423 co-relation queries the response was YES. [2023-08-24 15:53:04,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3763 conditions, 971 events. 616/971 cut-off events. For 1423/1423 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3781 event pairs, 77 based on Foata normal form. 1/800 useless extension candidates. Maximal degree in co-relation 3742. Up to 633 conditions per place. [2023-08-24 15:53:04,907 INFO L140 encePairwiseOnDemand]: 422/433 looper letters, 76 selfloop transitions, 39 changer transitions 3/118 dead transitions. [2023-08-24 15:53:04,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 876 flow [2023-08-24 15:53:04,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 15:53:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 15:53:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1618 transitions. [2023-08-24 15:53:04,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151911726969464 [2023-08-24 15:53:04,927 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1618 transitions. [2023-08-24 15:53:04,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1618 transitions. [2023-08-24 15:53:04,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:04,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1618 transitions. [2023-08-24 15:53:04,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.77777777777777) internal successors, (1618), 9 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states 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 15:53:04,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 433.0) internal successors, (4330), 10 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states 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 15:53:04,935 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 433.0) internal successors, (4330), 10 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states 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 15:53:04,935 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 445 flow. Second operand 9 states and 1618 transitions. [2023-08-24 15:53:04,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 876 flow [2023-08-24 15:53:04,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 118 transitions, 830 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-08-24 15:53:04,944 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 608 flow [2023-08-24 15:53:04,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=608, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2023-08-24 15:53:04,945 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-08-24 15:53:04,945 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 608 flow [2023-08-24 15:53:04,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 15:53:04,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:04,946 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] [2023-08-24 15:53:04,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 15:53:04,946 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 1 more)] === [2023-08-24 15:53:04,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1310964555, now seen corresponding path program 1 times [2023-08-24 15:53:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:04,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541155799] [2023-08-24 15:53:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:04,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541155799] [2023-08-24 15:53:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541155799] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996993313] [2023-08-24 15:53:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:05,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:05,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:05,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:05,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 15:53:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:05,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 15:53:05,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:05,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 15:53:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996993313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:05,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 15:53:05,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-08-24 15:53:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974830833] [2023-08-24 15:53:05,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:05,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 15:53:05,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:05,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 15:53:05,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 15:53:05,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 433 [2023-08-24 15:53:05,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 15:53:05,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:05,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 433 [2023-08-24 15:53:05,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:05,425 INFO L124 PetriNetUnfolderBase]: 804/1264 cut-off events. [2023-08-24 15:53:05,425 INFO L125 PetriNetUnfolderBase]: For 3198/3206 co-relation queries the response was YES. [2023-08-24 15:53:05,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5460 conditions, 1264 events. 804/1264 cut-off events. For 3198/3206 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5273 event pairs, 213 based on Foata normal form. 20/1030 useless extension candidates. Maximal degree in co-relation 5435. Up to 576 conditions per place. [2023-08-24 15:53:05,432 INFO L140 encePairwiseOnDemand]: 428/433 looper letters, 63 selfloop transitions, 39 changer transitions 4/108 dead transitions. [2023-08-24 15:53:05,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 108 transitions, 996 flow [2023-08-24 15:53:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 15:53:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 15:53:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 812 transitions. [2023-08-24 15:53:05,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46882217090069284 [2023-08-24 15:53:05,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 812 transitions. [2023-08-24 15:53:05,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 812 transitions. [2023-08-24 15:53:05,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:05,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 812 transitions. [2023-08-24 15:53:05,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 15:53:05,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 433.0) internal successors, (2165), 5 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states 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 15:53:05,438 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 433.0) internal successors, (2165), 5 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states 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 15:53:05,438 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 608 flow. Second operand 4 states and 812 transitions. [2023-08-24 15:53:05,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 108 transitions, 996 flow [2023-08-24 15:53:05,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 912 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-08-24 15:53:05,453 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 704 flow [2023-08-24 15:53:05,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=704, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2023-08-24 15:53:05,454 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 43 predicate places. [2023-08-24 15:53:05,454 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 704 flow [2023-08-24 15:53:05,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 15:53:05,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:05,455 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] [2023-08-24 15:53:05,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 15:53:05,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-24 15:53:05,675 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 1 more)] === [2023-08-24 15:53:05,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:05,675 INFO L85 PathProgramCache]: Analyzing trace with hash 312437159, now seen corresponding path program 1 times [2023-08-24 15:53:05,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:05,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713452042] [2023-08-24 15:53:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:05,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713452042] [2023-08-24 15:53:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713452042] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080667788] [2023-08-24 15:53:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:05,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:05,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:05,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:05,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 15:53:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:05,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 15:53:05,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:05,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:06,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080667788] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:53:06,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:53:06,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 15:53:06,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713152106] [2023-08-24 15:53:06,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:53:06,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 15:53:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 15:53:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-24 15:53:06,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 433 [2023-08-24 15:53:06,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 704 flow. Second operand has 12 states, 12 states have (on average 166.5) internal successors, (1998), 12 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states 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 15:53:06,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:06,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 433 [2023-08-24 15:53:06,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:06,328 INFO L124 PetriNetUnfolderBase]: 1246/1993 cut-off events. [2023-08-24 15:53:06,329 INFO L125 PetriNetUnfolderBase]: For 6203/6219 co-relation queries the response was YES. [2023-08-24 15:53:06,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9780 conditions, 1993 events. 1246/1993 cut-off events. For 6203/6219 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9245 event pairs, 570 based on Foata normal form. 80/1703 useless extension candidates. Maximal degree in co-relation 9752. Up to 1138 conditions per place. [2023-08-24 15:53:06,340 INFO L140 encePairwiseOnDemand]: 428/433 looper letters, 142 selfloop transitions, 7 changer transitions 5/156 dead transitions. [2023-08-24 15:53:06,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 156 transitions, 1693 flow [2023-08-24 15:53:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 15:53:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 15:53:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1039 transitions. [2023-08-24 15:53:06,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39992301770592764 [2023-08-24 15:53:06,343 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1039 transitions. [2023-08-24 15:53:06,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1039 transitions. [2023-08-24 15:53:06,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:06,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1039 transitions. [2023-08-24 15:53:06,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.16666666666666) internal successors, (1039), 6 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 15:53:06,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 433.0) internal successors, (3031), 7 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states 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 15:53:06,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 433.0) internal successors, (3031), 7 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states 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 15:53:06,348 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 704 flow. Second operand 6 states and 1039 transitions. [2023-08-24 15:53:06,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 156 transitions, 1693 flow [2023-08-24 15:53:06,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 156 transitions, 1589 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-08-24 15:53:06,418 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 739 flow [2023-08-24 15:53:06,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2023-08-24 15:53:06,419 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2023-08-24 15:53:06,419 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 739 flow [2023-08-24 15:53:06,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 166.5) internal successors, (1998), 12 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states 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 15:53:06,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:06,420 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:53:06,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 15:53:06,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-24 15:53:06,625 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 1 more)] === [2023-08-24 15:53:06,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2051757585, now seen corresponding path program 1 times [2023-08-24 15:53:06,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:06,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553757650] [2023-08-24 15:53:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:06,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:06,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:06,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553757650] [2023-08-24 15:53:06,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553757650] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:06,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460612872] [2023-08-24 15:53:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:06,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:06,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:06,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:06,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 15:53:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:06,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 15:53:06,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:06,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460612872] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:53:06,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:53:06,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 15:53:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041370112] [2023-08-24 15:53:06,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:53:06,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 15:53:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 15:53:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-24 15:53:07,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 433 [2023-08-24 15:53:07,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 739 flow. Second operand has 12 states, 12 states have (on average 166.25) internal successors, (1995), 12 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 15:53:07,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:07,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 433 [2023-08-24 15:53:07,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:07,404 INFO L124 PetriNetUnfolderBase]: 1736/2867 cut-off events. [2023-08-24 15:53:07,404 INFO L125 PetriNetUnfolderBase]: For 7887/7919 co-relation queries the response was YES. [2023-08-24 15:53:07,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12774 conditions, 2867 events. 1736/2867 cut-off events. For 7887/7919 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15175 event pairs, 895 based on Foata normal form. 108/2548 useless extension candidates. Maximal degree in co-relation 12746. Up to 1792 conditions per place. [2023-08-24 15:53:07,426 INFO L140 encePairwiseOnDemand]: 428/433 looper letters, 109 selfloop transitions, 6 changer transitions 23/140 dead transitions. [2023-08-24 15:53:07,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 140 transitions, 1459 flow [2023-08-24 15:53:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 15:53:07,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 15:53:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1039 transitions. [2023-08-24 15:53:07,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39992301770592764 [2023-08-24 15:53:07,428 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1039 transitions. [2023-08-24 15:53:07,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1039 transitions. [2023-08-24 15:53:07,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:07,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1039 transitions. [2023-08-24 15:53:07,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.16666666666666) internal successors, (1039), 6 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 15:53:07,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 433.0) internal successors, (3031), 7 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states 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 15:53:07,433 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 433.0) internal successors, (3031), 7 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states 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 15:53:07,433 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 739 flow. Second operand 6 states and 1039 transitions. [2023-08-24 15:53:07,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 140 transitions, 1459 flow [2023-08-24 15:53:07,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 140 transitions, 1431 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-24 15:53:07,454 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 822 flow [2023-08-24 15:53:07,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=822, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2023-08-24 15:53:07,454 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2023-08-24 15:53:07,454 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 822 flow [2023-08-24 15:53:07,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 166.25) internal successors, (1995), 12 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 15:53:07,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:07,455 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:53:07,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 15:53:07,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:07,660 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 1 more)] === [2023-08-24 15:53:07,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash -435180203, now seen corresponding path program 2 times [2023-08-24 15:53:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11924696] [2023-08-24 15:53:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:07,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:08,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:08,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11924696] [2023-08-24 15:53:08,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11924696] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:08,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460184424] [2023-08-24 15:53:08,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 15:53:08,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:08,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:08,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:08,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 15:53:08,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 15:53:08,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 15:53:08,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-24 15:53:08,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:08,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 15:53:08,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 15:53:08,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 15:53:08,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 15:53:08,702 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-24 15:53:08,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-24 15:53:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:08,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:08,916 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 15:53:08,916 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 151 [2023-08-24 15:53:08,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2023-08-24 15:53:08,930 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-08-24 15:53:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:09,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460184424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:53:09,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:53:09,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2023-08-24 15:53:09,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607956288] [2023-08-24 15:53:09,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:53:09,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 15:53:09,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 15:53:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2023-08-24 15:53:09,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 433 [2023-08-24 15:53:09,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 822 flow. Second operand has 27 states, 27 states have (on average 138.25925925925927) internal successors, (3733), 27 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states 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 15:53:09,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:09,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 433 [2023-08-24 15:53:09,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:11,549 INFO L124 PetriNetUnfolderBase]: 4551/7125 cut-off events. [2023-08-24 15:53:11,549 INFO L125 PetriNetUnfolderBase]: For 23008/23080 co-relation queries the response was YES. [2023-08-24 15:53:11,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30572 conditions, 7125 events. 4551/7125 cut-off events. For 23008/23080 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 41185 event pairs, 803 based on Foata normal form. 54/5847 useless extension candidates. Maximal degree in co-relation 30542. Up to 2421 conditions per place. [2023-08-24 15:53:11,588 INFO L140 encePairwiseOnDemand]: 421/433 looper letters, 315 selfloop transitions, 104 changer transitions 1/422 dead transitions. [2023-08-24 15:53:11,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 422 transitions, 4209 flow [2023-08-24 15:53:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-24 15:53:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-24 15:53:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3784 transitions. [2023-08-24 15:53:11,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3361165393497957 [2023-08-24 15:53:11,596 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3784 transitions. [2023-08-24 15:53:11,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3784 transitions. [2023-08-24 15:53:11,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:11,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3784 transitions. [2023-08-24 15:53:11,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 145.53846153846155) internal successors, (3784), 26 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states 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 15:53:11,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 433.0) internal successors, (11691), 27 states have internal predecessors, (11691), 0 states have call successors, (0), 0 states 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 15:53:11,612 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 433.0) internal successors, (11691), 27 states have internal predecessors, (11691), 0 states have call successors, (0), 0 states 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 15:53:11,612 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 822 flow. Second operand 26 states and 3784 transitions. [2023-08-24 15:53:11,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 422 transitions, 4209 flow [2023-08-24 15:53:11,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 422 transitions, 4045 flow, removed 70 selfloop flow, removed 3 redundant places. [2023-08-24 15:53:11,697 INFO L231 Difference]: Finished difference. Result has 122 places, 185 transitions, 2086 flow [2023-08-24 15:53:11,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2086, PETRI_PLACES=122, PETRI_TRANSITIONS=185} [2023-08-24 15:53:11,698 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2023-08-24 15:53:11,698 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 185 transitions, 2086 flow [2023-08-24 15:53:11,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 138.25925925925927) internal successors, (3733), 27 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states 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 15:53:11,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:11,699 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:53:11,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 15:53:11,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:11,904 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 1 more)] === [2023-08-24 15:53:11,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1228296327, now seen corresponding path program 3 times [2023-08-24 15:53:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:11,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381049239] [2023-08-24 15:53:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:12,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:12,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381049239] [2023-08-24 15:53:12,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381049239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:12,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594545493] [2023-08-24 15:53:12,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 15:53:12,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:12,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:12,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:12,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 15:53:12,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 15:53:12,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 15:53:12,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-24 15:53:12,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:12,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:12,625 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-24 15:53:12,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-08-24 15:53:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 15:53:12,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594545493] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:12,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 15:53:12,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 14 [2023-08-24 15:53:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125262131] [2023-08-24 15:53:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:12,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 15:53:12,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 15:53:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-08-24 15:53:12,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 433 [2023-08-24 15:53:12,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 185 transitions, 2086 flow. Second operand has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 15:53:12,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:12,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 433 [2023-08-24 15:53:12,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:13,586 INFO L124 PetriNetUnfolderBase]: 5298/8244 cut-off events. [2023-08-24 15:53:13,587 INFO L125 PetriNetUnfolderBase]: For 59153/59221 co-relation queries the response was YES. [2023-08-24 15:53:13,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43826 conditions, 8244 events. 5298/8244 cut-off events. For 59153/59221 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 47867 event pairs, 1212 based on Foata normal form. 108/7782 useless extension candidates. Maximal degree in co-relation 43782. Up to 4966 conditions per place. [2023-08-24 15:53:13,644 INFO L140 encePairwiseOnDemand]: 425/433 looper letters, 152 selfloop transitions, 94 changer transitions 0/248 dead transitions. [2023-08-24 15:53:13,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 248 transitions, 3077 flow [2023-08-24 15:53:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 15:53:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 15:53:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 920 transitions. [2023-08-24 15:53:13,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42494226327944573 [2023-08-24 15:53:13,647 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 920 transitions. [2023-08-24 15:53:13,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 920 transitions. [2023-08-24 15:53:13,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:13,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 920 transitions. [2023-08-24 15:53:13,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 15:53:13,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 433.0) internal successors, (2598), 6 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states 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 15:53:13,651 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 433.0) internal successors, (2598), 6 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states 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 15:53:13,651 INFO L175 Difference]: Start difference. First operand has 122 places, 185 transitions, 2086 flow. Second operand 5 states and 920 transitions. [2023-08-24 15:53:13,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 248 transitions, 3077 flow [2023-08-24 15:53:14,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 248 transitions, 2899 flow, removed 84 selfloop flow, removed 4 redundant places. [2023-08-24 15:53:14,003 INFO L231 Difference]: Finished difference. Result has 125 places, 197 transitions, 2451 flow [2023-08-24 15:53:14,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2451, PETRI_PLACES=125, PETRI_TRANSITIONS=197} [2023-08-24 15:53:14,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2023-08-24 15:53:14,004 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 197 transitions, 2451 flow [2023-08-24 15:53:14,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 15:53:14,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:14,005 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:53:14,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 15:53:14,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 15:53:14,205 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 1 more)] === [2023-08-24 15:53:14,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:14,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1234251943, now seen corresponding path program 4 times [2023-08-24 15:53:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:14,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478185304] [2023-08-24 15:53:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:14,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:14,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478185304] [2023-08-24 15:53:14,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478185304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467043518] [2023-08-24 15:53:14,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 15:53:14,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:14,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:14,740 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:14,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 15:53:14,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 15:53:14,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 15:53:14,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 15:53:14,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:14,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 15:53:14,942 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 15:53:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 15:53:14,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:15,048 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 15:53:15,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-08-24 15:53:15,051 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-24 15:53:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 15:53:15,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467043518] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:53:15,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:53:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 19 [2023-08-24 15:53:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393065886] [2023-08-24 15:53:15,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:53:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 15:53:15,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 15:53:15,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-08-24 15:53:15,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 433 [2023-08-24 15:53:15,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 197 transitions, 2451 flow. Second operand has 20 states, 20 states have (on average 132.1) internal successors, (2642), 20 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states 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 15:53:15,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:15,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 433 [2023-08-24 15:53:15,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:16,948 INFO L124 PetriNetUnfolderBase]: 6379/9949 cut-off events. [2023-08-24 15:53:16,948 INFO L125 PetriNetUnfolderBase]: For 85444/85444 co-relation queries the response was YES. [2023-08-24 15:53:16,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54679 conditions, 9949 events. 6379/9949 cut-off events. For 85444/85444 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 60339 event pairs, 1428 based on Foata normal form. 94/9689 useless extension candidates. Maximal degree in co-relation 54634. Up to 4792 conditions per place. [2023-08-24 15:53:17,011 INFO L140 encePairwiseOnDemand]: 421/433 looper letters, 210 selfloop transitions, 126 changer transitions 0/336 dead transitions. [2023-08-24 15:53:17,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 336 transitions, 4268 flow [2023-08-24 15:53:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 15:53:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 15:53:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2070 transitions. [2023-08-24 15:53:17,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3187066974595843 [2023-08-24 15:53:17,016 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2070 transitions. [2023-08-24 15:53:17,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2070 transitions. [2023-08-24 15:53:17,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:17,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2070 transitions. [2023-08-24 15:53:17,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 138.0) internal successors, (2070), 15 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states 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 15:53:17,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 433.0) internal successors, (6928), 16 states have internal predecessors, (6928), 0 states have call successors, (0), 0 states 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 15:53:17,025 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 433.0) internal successors, (6928), 16 states have internal predecessors, (6928), 0 states have call successors, (0), 0 states 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 15:53:17,025 INFO L175 Difference]: Start difference. First operand has 125 places, 197 transitions, 2451 flow. Second operand 15 states and 2070 transitions. [2023-08-24 15:53:17,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 336 transitions, 4268 flow [2023-08-24 15:53:17,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 336 transitions, 4239 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 15:53:17,289 INFO L231 Difference]: Finished difference. Result has 146 places, 224 transitions, 3208 flow [2023-08-24 15:53:17,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3208, PETRI_PLACES=146, PETRI_TRANSITIONS=224} [2023-08-24 15:53:17,289 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2023-08-24 15:53:17,289 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 224 transitions, 3208 flow [2023-08-24 15:53:17,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 132.1) internal successors, (2642), 20 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states 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 15:53:17,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:17,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:53:17,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-24 15:53:17,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 15:53:17,495 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 1 more)] === [2023-08-24 15:53:17,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash 770210509, now seen corresponding path program 5 times [2023-08-24 15:53:17,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:17,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405622057] [2023-08-24 15:53:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:17,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:18,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:18,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405622057] [2023-08-24 15:53:18,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405622057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:18,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842774135] [2023-08-24 15:53:18,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 15:53:18,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:18,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:18,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:18,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 15:53:18,153 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 15:53:18,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 15:53:18,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-24 15:53:18,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:18,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 15:53:18,318 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-24 15:53:18,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 15:53:18,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-24 15:53:18,410 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-08-24 15:53:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:18,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:18,571 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 15:53:18,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 77 [2023-08-24 15:53:18,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2023-08-24 15:53:18,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-08-24 15:53:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:18,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842774135] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:53:18,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:53:18,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-24 15:53:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011461807] [2023-08-24 15:53:18,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:53:18,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-24 15:53:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-24 15:53:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=639, Unknown=4, NotChecked=0, Total=756 [2023-08-24 15:53:18,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 433 [2023-08-24 15:53:18,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 224 transitions, 3208 flow. Second operand has 28 states, 28 states have (on average 138.07142857142858) internal successors, (3866), 28 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states 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 15:53:18,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:18,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 433 [2023-08-24 15:53:18,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:23,474 INFO L124 PetriNetUnfolderBase]: 11924/18606 cut-off events. [2023-08-24 15:53:23,475 INFO L125 PetriNetUnfolderBase]: For 212279/212343 co-relation queries the response was YES. [2023-08-24 15:53:23,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111377 conditions, 18606 events. 11924/18606 cut-off events. For 212279/212343 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 123144 event pairs, 1542 based on Foata normal form. 382/18168 useless extension candidates. Maximal degree in co-relation 111324. Up to 5361 conditions per place. [2023-08-24 15:53:23,611 INFO L140 encePairwiseOnDemand]: 416/433 looper letters, 510 selfloop transitions, 245 changer transitions 7/766 dead transitions. [2023-08-24 15:53:23,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 766 transitions, 10271 flow [2023-08-24 15:53:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-24 15:53:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-24 15:53:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5410 transitions. [2023-08-24 15:53:23,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3376817926471506 [2023-08-24 15:53:23,617 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5410 transitions. [2023-08-24 15:53:23,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5410 transitions. [2023-08-24 15:53:23,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:23,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5410 transitions. [2023-08-24 15:53:23,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 146.21621621621622) internal successors, (5410), 37 states have internal predecessors, (5410), 0 states have call successors, (0), 0 states 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 15:53:23,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 433.0) internal successors, (16454), 38 states have internal predecessors, (16454), 0 states have call successors, (0), 0 states 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 15:53:23,634 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 433.0) internal successors, (16454), 38 states have internal predecessors, (16454), 0 states have call successors, (0), 0 states 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 15:53:23,635 INFO L175 Difference]: Start difference. First operand has 146 places, 224 transitions, 3208 flow. Second operand 37 states and 5410 transitions. [2023-08-24 15:53:23,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 766 transitions, 10271 flow [2023-08-24 15:53:24,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 766 transitions, 10197 flow, removed 33 selfloop flow, removed 3 redundant places. [2023-08-24 15:53:24,331 INFO L231 Difference]: Finished difference. Result has 199 places, 389 transitions, 6917 flow [2023-08-24 15:53:24,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6917, PETRI_PLACES=199, PETRI_TRANSITIONS=389} [2023-08-24 15:53:24,331 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2023-08-24 15:53:24,331 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 389 transitions, 6917 flow [2023-08-24 15:53:24,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 138.07142857142858) internal successors, (3866), 28 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states 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 15:53:24,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:24,332 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:53:24,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 15:53:24,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:24,539 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 1 more)] === [2023-08-24 15:53:24,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1917460393, now seen corresponding path program 2 times [2023-08-24 15:53:24,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:24,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861416653] [2023-08-24 15:53:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:24,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 15:53:24,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861416653] [2023-08-24 15:53:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861416653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310230215] [2023-08-24 15:53:24,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 15:53:24,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:24,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:24,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:24,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 15:53:24,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 15:53:24,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 15:53:24,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 15:53:24,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 15:53:25,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 15:53:25,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310230215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:53:25,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 15:53:25,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-24 15:53:25,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361781014] [2023-08-24 15:53:25,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:25,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 15:53:25,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:25,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 15:53:25,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-24 15:53:25,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 433 [2023-08-24 15:53:25,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 389 transitions, 6917 flow. Second operand has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 15:53:25,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:25,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 433 [2023-08-24 15:53:25,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:28,420 INFO L124 PetriNetUnfolderBase]: 11800/18300 cut-off events. [2023-08-24 15:53:28,421 INFO L125 PetriNetUnfolderBase]: For 317721/317789 co-relation queries the response was YES. [2023-08-24 15:53:28,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133606 conditions, 18300 events. 11800/18300 cut-off events. For 317721/317789 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 119564 event pairs, 2126 based on Foata normal form. 208/17566 useless extension candidates. Maximal degree in co-relation 133533. Up to 14084 conditions per place. [2023-08-24 15:53:28,637 INFO L140 encePairwiseOnDemand]: 429/433 looper letters, 354 selfloop transitions, 56 changer transitions 44/458 dead transitions. [2023-08-24 15:53:28,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 458 transitions, 8924 flow [2023-08-24 15:53:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 15:53:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 15:53:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 818 transitions. [2023-08-24 15:53:28,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722863741339492 [2023-08-24 15:53:28,642 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 818 transitions. [2023-08-24 15:53:28,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 818 transitions. [2023-08-24 15:53:28,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:28,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 818 transitions. [2023-08-24 15:53:28,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.5) internal successors, (818), 4 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 15:53:28,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 433.0) internal successors, (2165), 5 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states 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 15:53:28,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 433.0) internal successors, (2165), 5 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states 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 15:53:28,646 INFO L175 Difference]: Start difference. First operand has 199 places, 389 transitions, 6917 flow. Second operand 4 states and 818 transitions. [2023-08-24 15:53:28,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 458 transitions, 8924 flow [2023-08-24 15:53:30,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 458 transitions, 8219 flow, removed 325 selfloop flow, removed 11 redundant places. [2023-08-24 15:53:30,882 INFO L231 Difference]: Finished difference. Result has 193 places, 344 transitions, 5556 flow [2023-08-24 15:53:30,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=5826, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5556, PETRI_PLACES=193, PETRI_TRANSITIONS=344} [2023-08-24 15:53:30,882 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2023-08-24 15:53:30,883 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 344 transitions, 5556 flow [2023-08-24 15:53:30,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 15:53:30,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:30,883 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 15:53:30,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-24 15:53:31,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 15:53:31,089 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 1 more)] === [2023-08-24 15:53:31,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1260871773, now seen corresponding path program 6 times [2023-08-24 15:53:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342836885] [2023-08-24 15:53:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:31,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342836885] [2023-08-24 15:53:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342836885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583032576] [2023-08-24 15:53:31,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 15:53:31,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:31,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:31,678 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:31,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 15:53:31,957 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 15:53:31,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 15:53:31,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-24 15:53:31,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:32,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 15:53:32,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 15:53:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:32,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:32,118 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_726 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_726) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-24 15:53:32,126 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 15:53:32,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-08-24 15:53:32,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-24 15:53:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 15:53:32,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583032576] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:32,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 15:53:32,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 8] total 22 [2023-08-24 15:53:32,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701317469] [2023-08-24 15:53:32,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:53:32,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 15:53:32,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:32,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 15:53:32,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=403, Unknown=1, NotChecked=40, Total=506 [2023-08-24 15:53:32,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 433 [2023-08-24 15:53:32,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 344 transitions, 5556 flow. Second operand has 7 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 15:53:32,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:32,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 433 [2023-08-24 15:53:32,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:35,470 INFO L124 PetriNetUnfolderBase]: 12022/18479 cut-off events. [2023-08-24 15:53:35,471 INFO L125 PetriNetUnfolderBase]: For 306651/306703 co-relation queries the response was YES. [2023-08-24 15:53:35,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132628 conditions, 18479 events. 12022/18479 cut-off events. For 306651/306703 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 118827 event pairs, 2780 based on Foata normal form. 88/17615 useless extension candidates. Maximal degree in co-relation 132553. Up to 10549 conditions per place. [2023-08-24 15:53:35,700 INFO L140 encePairwiseOnDemand]: 419/433 looper letters, 275 selfloop transitions, 188 changer transitions 0/467 dead transitions. [2023-08-24 15:53:35,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 467 transitions, 7997 flow [2023-08-24 15:53:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 15:53:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 15:53:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1202 transitions. [2023-08-24 15:53:35,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3965687891784889 [2023-08-24 15:53:35,703 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1202 transitions. [2023-08-24 15:53:35,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1202 transitions. [2023-08-24 15:53:35,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:35,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1202 transitions. [2023-08-24 15:53:35,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.71428571428572) internal successors, (1202), 7 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states 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 15:53:35,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 433.0) internal successors, (3464), 8 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states 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 15:53:35,706 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 433.0) internal successors, (3464), 8 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states 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 15:53:35,707 INFO L175 Difference]: Start difference. First operand has 193 places, 344 transitions, 5556 flow. Second operand 7 states and 1202 transitions. [2023-08-24 15:53:35,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 467 transitions, 7997 flow [2023-08-24 15:53:37,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 467 transitions, 7543 flow, removed 210 selfloop flow, removed 12 redundant places. [2023-08-24 15:53:37,363 INFO L231 Difference]: Finished difference. Result has 173 places, 386 transitions, 6656 flow [2023-08-24 15:53:37,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=5174, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6656, PETRI_PLACES=173, PETRI_TRANSITIONS=386} [2023-08-24 15:53:37,363 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2023-08-24 15:53:37,363 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 386 transitions, 6656 flow [2023-08-24 15:53:37,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 15:53:37,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:37,364 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 15:53:37,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 15:53:37,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-24 15:53:37,565 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 1 more)] === [2023-08-24 15:53:37,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash -430524221, now seen corresponding path program 7 times [2023-08-24 15:53:37,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:37,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804978728] [2023-08-24 15:53:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:37,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:53:38,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:38,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804978728] [2023-08-24 15:53:38,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804978728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:38,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782427235] [2023-08-24 15:53:38,664 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 15:53:38,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:38,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:38,665 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:38,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 15:53:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:38,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-24 15:53:38,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:38,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 15:53:38,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 15:53:38,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 15:53:38,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 15:53:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:53:39,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:39,054 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_788 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_788) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-24 15:53:39,102 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 15:53:39,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 151 [2023-08-24 15:53:39,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2023-08-24 15:53:39,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-08-24 15:53:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 15:53:39,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782427235] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:53:39,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:53:39,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 23 [2023-08-24 15:53:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301495204] [2023-08-24 15:53:39,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:53:39,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 15:53:39,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:39,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 15:53:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=436, Unknown=8, NotChecked=42, Total=552 [2023-08-24 15:53:39,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 433 [2023-08-24 15:53:39,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 386 transitions, 6656 flow. Second operand has 24 states, 24 states have (on average 138.54166666666666) internal successors, (3325), 24 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states 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 15:53:39,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:39,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 433 [2023-08-24 15:53:39,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:53:43,215 INFO L124 PetriNetUnfolderBase]: 13147/20069 cut-off events. [2023-08-24 15:53:43,215 INFO L125 PetriNetUnfolderBase]: For 319571/319641 co-relation queries the response was YES. [2023-08-24 15:53:43,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143664 conditions, 20069 events. 13147/20069 cut-off events. For 319571/319641 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 127575 event pairs, 2036 based on Foata normal form. 110/19184 useless extension candidates. Maximal degree in co-relation 143596. Up to 6081 conditions per place. [2023-08-24 15:53:43,423 INFO L140 encePairwiseOnDemand]: 426/433 looper letters, 342 selfloop transitions, 197 changer transitions 2/545 dead transitions. [2023-08-24 15:53:43,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 545 transitions, 9601 flow [2023-08-24 15:53:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 15:53:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 15:53:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1863 transitions. [2023-08-24 15:53:43,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.330964647361876 [2023-08-24 15:53:43,426 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1863 transitions. [2023-08-24 15:53:43,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1863 transitions. [2023-08-24 15:53:43,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:53:43,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1863 transitions. [2023-08-24 15:53:43,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.30769230769232) internal successors, (1863), 13 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states 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 15:53:43,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 433.0) internal successors, (6062), 14 states have internal predecessors, (6062), 0 states have call successors, (0), 0 states 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 15:53:43,431 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 433.0) internal successors, (6062), 14 states have internal predecessors, (6062), 0 states have call successors, (0), 0 states 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 15:53:43,431 INFO L175 Difference]: Start difference. First operand has 173 places, 386 transitions, 6656 flow. Second operand 13 states and 1863 transitions. [2023-08-24 15:53:43,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 545 transitions, 9601 flow [2023-08-24 15:53:45,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 545 transitions, 8579 flow, removed 104 selfloop flow, removed 11 redundant places. [2023-08-24 15:53:45,350 INFO L231 Difference]: Finished difference. Result has 170 places, 405 transitions, 6526 flow [2023-08-24 15:53:45,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=5621, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6526, PETRI_PLACES=170, PETRI_TRANSITIONS=405} [2023-08-24 15:53:45,350 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2023-08-24 15:53:45,350 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 405 transitions, 6526 flow [2023-08-24 15:53:45,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 138.54166666666666) internal successors, (3325), 24 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states 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 15:53:45,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:53:45,351 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:53:45,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 15:53:45,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:45,555 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 15:53:45,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:53:45,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1220482477, now seen corresponding path program 1 times [2023-08-24 15:53:45,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:53:45,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199057542] [2023-08-24 15:53:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:45,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:53:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 15:53:46,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:53:46,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199057542] [2023-08-24 15:53:46,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199057542] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:53:46,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924509679] [2023-08-24 15:53:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:53:46,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:53:46,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:53:46,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:53:46,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 15:53:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:53:46,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-24 15:53:46,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:53:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 15:53:47,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:53:47,605 INFO L322 Elim1Store]: treesize reduction 23, result has 75.3 percent of original size [2023-08-24 15:53:47,606 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 82 [2023-08-24 15:53:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 15:53:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924509679] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:53:48,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:53:48,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 40 [2023-08-24 15:53:48,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714298767] [2023-08-24 15:53:48,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:53:48,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-24 15:53:48,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:53:48,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-24 15:53:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1403, Unknown=0, NotChecked=0, Total=1640 [2023-08-24 15:53:48,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 433 [2023-08-24 15:53:48,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 405 transitions, 6526 flow. Second operand has 41 states, 41 states have (on average 123.90243902439025) internal successors, (5080), 41 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states 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 15:53:48,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:53:48,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 433 [2023-08-24 15:53:48,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:54:09,369 INFO L124 PetriNetUnfolderBase]: 59425/88131 cut-off events. [2023-08-24 15:54:09,369 INFO L125 PetriNetUnfolderBase]: For 1150556/1150556 co-relation queries the response was YES. [2023-08-24 15:54:10,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602134 conditions, 88131 events. 59425/88131 cut-off events. For 1150556/1150556 co-relation queries the response was YES. Maximal size of possible extension queue 3469. Compared 659286 event pairs, 3394 based on Foata normal form. 0/82447 useless extension candidates. Maximal degree in co-relation 602073. Up to 19693 conditions per place. [2023-08-24 15:54:10,642 INFO L140 encePairwiseOnDemand]: 416/433 looper letters, 1599 selfloop transitions, 2502 changer transitions 5/4106 dead transitions. [2023-08-24 15:54:10,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 4106 transitions, 69752 flow [2023-08-24 15:54:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-08-24 15:54:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-08-24 15:54:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 11208 transitions. [2023-08-24 15:54:10,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30452384186931125 [2023-08-24 15:54:10,654 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 11208 transitions. [2023-08-24 15:54:10,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 11208 transitions. [2023-08-24 15:54:10,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:54:10,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 11208 transitions. [2023-08-24 15:54:10,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 131.85882352941175) internal successors, (11208), 85 states have internal predecessors, (11208), 0 states have call successors, (0), 0 states 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 15:54:10,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 433.0) internal successors, (37238), 86 states have internal predecessors, (37238), 0 states have call successors, (0), 0 states 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 15:54:10,686 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 433.0) internal successors, (37238), 86 states have internal predecessors, (37238), 0 states have call successors, (0), 0 states 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 15:54:10,686 INFO L175 Difference]: Start difference. First operand has 170 places, 405 transitions, 6526 flow. Second operand 85 states and 11208 transitions. [2023-08-24 15:54:10,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 4106 transitions, 69752 flow [2023-08-24 15:54:26,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 4106 transitions, 69432 flow, removed 137 selfloop flow, removed 7 redundant places. [2023-08-24 15:54:26,439 INFO L231 Difference]: Finished difference. Result has 289 places, 3175 transitions, 63267 flow [2023-08-24 15:54:26,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=6374, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=63267, PETRI_PLACES=289, PETRI_TRANSITIONS=3175} [2023-08-24 15:54:26,440 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2023-08-24 15:54:26,440 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 3175 transitions, 63267 flow [2023-08-24 15:54:26,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 123.90243902439025) internal successors, (5080), 41 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states 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 15:54:26,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:54:26,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:54:26,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 15:54:26,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:54:26,645 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 15:54:26,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:54:26,645 INFO L85 PathProgramCache]: Analyzing trace with hash -577769549, now seen corresponding path program 2 times [2023-08-24 15:54:26,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:54:26,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39336740] [2023-08-24 15:54:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:54:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:54:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:54:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 15:54:27,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:54:27,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39336740] [2023-08-24 15:54:27,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39336740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:54:27,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923724027] [2023-08-24 15:54:27,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 15:54:27,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:54:27,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:54:27,787 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:54:27,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 15:54:27,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 15:54:27,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 15:54:27,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-24 15:54:27,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:54:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 15:54:30,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:54:30,228 INFO L322 Elim1Store]: treesize reduction 23, result has 75.3 percent of original size [2023-08-24 15:54:30,228 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 82 [2023-08-24 15:54:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 15:54:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923724027] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:54:30,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:54:30,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 5] total 23 [2023-08-24 15:54:30,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209251271] [2023-08-24 15:54:30,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:54:30,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 15:54:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:54:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 15:54:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-08-24 15:54:30,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 433 [2023-08-24 15:54:30,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 3175 transitions, 63267 flow. Second operand has 24 states, 24 states have (on average 137.0) internal successors, (3288), 24 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states 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 15:54:30,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:54:30,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 433 [2023-08-24 15:54:30,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:55:31,810 INFO L124 PetriNetUnfolderBase]: 79114/116220 cut-off events. [2023-08-24 15:55:31,810 INFO L125 PetriNetUnfolderBase]: For 4021848/4021968 co-relation queries the response was YES. [2023-08-24 15:55:34,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097039 conditions, 116220 events. 79114/116220 cut-off events. For 4021848/4021968 co-relation queries the response was YES. Maximal size of possible extension queue 4413. Compared 878779 event pairs, 15016 based on Foata normal form. 607/113040 useless extension candidates. Maximal degree in co-relation 1096937. Up to 78297 conditions per place. [2023-08-24 15:55:35,206 INFO L140 encePairwiseOnDemand]: 420/433 looper letters, 4296 selfloop transitions, 246 changer transitions 0/4554 dead transitions. [2023-08-24 15:55:35,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 4554 transitions, 98551 flow [2023-08-24 15:55:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 15:55:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 15:55:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3125 transitions. [2023-08-24 15:55:35,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32804954860382113 [2023-08-24 15:55:35,223 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3125 transitions. [2023-08-24 15:55:35,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3125 transitions. [2023-08-24 15:55:35,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:55:35,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3125 transitions. [2023-08-24 15:55:35,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 142.04545454545453) internal successors, (3125), 22 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states 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 15:55:35,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 433.0) internal successors, (9959), 23 states have internal predecessors, (9959), 0 states have call successors, (0), 0 states 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 15:55:35,240 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 433.0) internal successors, (9959), 23 states have internal predecessors, (9959), 0 states have call successors, (0), 0 states 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 15:55:35,240 INFO L175 Difference]: Start difference. First operand has 289 places, 3175 transitions, 63267 flow. Second operand 22 states and 3125 transitions. [2023-08-24 15:55:35,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 4554 transitions, 98551 flow [2023-08-24 15:58:09,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 4554 transitions, 94046 flow, removed 2249 selfloop flow, removed 3 redundant places. [2023-08-24 15:58:09,745 INFO L231 Difference]: Finished difference. Result has 312 places, 3195 transitions, 60341 flow [2023-08-24 15:58:09,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=59030, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2930, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=60341, PETRI_PLACES=312, PETRI_TRANSITIONS=3195} [2023-08-24 15:58:09,746 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2023-08-24 15:58:09,746 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 3195 transitions, 60341 flow [2023-08-24 15:58:09,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 137.0) internal successors, (3288), 24 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states 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 15:58:09,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:58:09,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:58:09,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-24 15:58:09,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-24 15:58:09,952 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 15:58:09,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:58:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1184963433, now seen corresponding path program 3 times [2023-08-24 15:58:09,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:58:09,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352533246] [2023-08-24 15:58:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:58:09,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:58:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:58:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 15:58:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:58:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352533246] [2023-08-24 15:58:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352533246] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:58:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013297756] [2023-08-24 15:58:10,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 15:58:10,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:58:10,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:58:10,319 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:58:10,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 15:58:10,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 15:58:10,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 15:58:10,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 15:58:10,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:58:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 15:58:10,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:58:10,594 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-24 15:58:10,594 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2023-08-24 15:58:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 15:58:10,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013297756] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:58:10,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:58:10,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 3] total 12 [2023-08-24 15:58:10,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871238736] [2023-08-24 15:58:10,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:58:10,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 15:58:10,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:58:10,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 15:58:10,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-24 15:58:10,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 433 [2023-08-24 15:58:10,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 3195 transitions, 60341 flow. Second operand has 13 states, 13 states have (on average 147.23076923076923) internal successors, (1914), 13 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 15:58:10,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:58:10,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 433 [2023-08-24 15:58:10,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:59:25,531 INFO L124 PetriNetUnfolderBase]: 100577/147263 cut-off events. [2023-08-24 15:59:25,531 INFO L125 PetriNetUnfolderBase]: For 4904387/4904527 co-relation queries the response was YES. [2023-08-24 15:59:28,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362158 conditions, 147263 events. 100577/147263 cut-off events. For 4904387/4904527 co-relation queries the response was YES. Maximal size of possible extension queue 5468. Compared 1141243 event pairs, 15970 based on Foata normal form. 1919/146570 useless extension candidates. Maximal degree in co-relation 1362050. Up to 72761 conditions per place. [2023-08-24 15:59:29,687 INFO L140 encePairwiseOnDemand]: 423/433 looper letters, 4038 selfloop transitions, 406 changer transitions 0/4456 dead transitions. [2023-08-24 15:59:29,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 4456 transitions, 93160 flow [2023-08-24 15:59:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 15:59:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 15:59:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1670 transitions. [2023-08-24 15:59:29,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.350619357547764 [2023-08-24 15:59:29,689 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1670 transitions. [2023-08-24 15:59:29,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1670 transitions. [2023-08-24 15:59:29,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:59:29,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1670 transitions. [2023-08-24 15:59:29,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.8181818181818) internal successors, (1670), 11 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states 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 15:59:29,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 433.0) internal successors, (5196), 12 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states 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 15:59:29,693 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 433.0) internal successors, (5196), 12 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states 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 15:59:29,693 INFO L175 Difference]: Start difference. First operand has 312 places, 3195 transitions, 60341 flow. Second operand 11 states and 1670 transitions. [2023-08-24 15:59:29,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 4456 transitions, 93160 flow [2023-08-24 16:03:02,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 4456 transitions, 92698 flow, removed 145 selfloop flow, removed 10 redundant places. [2023-08-24 16:03:02,727 INFO L231 Difference]: Finished difference. Result has 316 places, 3351 transitions, 64622 flow [2023-08-24 16:03:02,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=59467, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=64622, PETRI_PLACES=316, PETRI_TRANSITIONS=3351} [2023-08-24 16:03:02,728 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2023-08-24 16:03:02,729 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 3351 transitions, 64622 flow [2023-08-24 16:03:02,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 147.23076923076923) internal successors, (1914), 13 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 16:03:02,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:03:02,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:03:02,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-24 16:03:02,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-24 16:03:02,933 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:03:02,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:03:02,934 INFO L85 PathProgramCache]: Analyzing trace with hash -200378745, now seen corresponding path program 4 times [2023-08-24 16:03:02,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:03:02,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327163192] [2023-08-24 16:03:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:03:02,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:03:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:03:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:03:04,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:03:04,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327163192] [2023-08-24 16:03:04,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327163192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:03:04,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319315388] [2023-08-24 16:03:04,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 16:03:04,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:03:04,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:03:04,229 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:03:04,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 16:03:04,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 16:03:04,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:03:04,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-24 16:03:04,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:03:04,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:03:04,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 16:03:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 16:03:04,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:03:04,644 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1029 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1029) c_~q2~0.base) (+ c_~q2~0.offset (* c_~q2_front~0 4))) 0))) is different from false [2023-08-24 16:03:04,787 INFO L322 Elim1Store]: treesize reduction 19, result has 79.6 percent of original size [2023-08-24 16:03:04,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 106 [2023-08-24 16:03:04,793 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-24 16:03:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2023-08-24 16:03:04,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319315388] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:03:04,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:03:04,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 29 [2023-08-24 16:03:04,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273955311] [2023-08-24 16:03:04,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:03:04,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-24 16:03:04,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:03:04,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-24 16:03:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=739, Unknown=1, NotChecked=54, Total=870 [2023-08-24 16:03:04,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 433 [2023-08-24 16:03:04,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 3351 transitions, 64622 flow. Second operand has 30 states, 30 states have (on average 129.43333333333334) internal successors, (3883), 30 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states 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 16:03:04,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:03:04,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 433 [2023-08-24 16:03:04,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:04:58,174 INFO L124 PetriNetUnfolderBase]: 133816/197137 cut-off events. [2023-08-24 16:04:58,174 INFO L125 PetriNetUnfolderBase]: For 6814455/6814595 co-relation queries the response was YES. [2023-08-24 16:05:02,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858562 conditions, 197137 events. 133816/197137 cut-off events. For 6814455/6814595 co-relation queries the response was YES. Maximal size of possible extension queue 6722. Compared 1590927 event pairs, 19432 based on Foata normal form. 2175/196780 useless extension candidates. Maximal degree in co-relation 1858449. Up to 78407 conditions per place. [2023-08-24 16:05:03,809 INFO L140 encePairwiseOnDemand]: 414/433 looper letters, 5329 selfloop transitions, 1655 changer transitions 0/6996 dead transitions. [2023-08-24 16:05:03,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 6996 transitions, 148795 flow [2023-08-24 16:05:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-24 16:05:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-24 16:05:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3808 transitions. [2023-08-24 16:05:03,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140877598152425 [2023-08-24 16:05:03,812 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3808 transitions. [2023-08-24 16:05:03,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3808 transitions. [2023-08-24 16:05:03,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:05:03,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3808 transitions. [2023-08-24 16:05:03,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 136.0) internal successors, (3808), 28 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states 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 16:05:03,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 433.0) internal successors, (12557), 29 states have internal predecessors, (12557), 0 states have call successors, (0), 0 states 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 16:05:03,837 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 433.0) internal successors, (12557), 29 states have internal predecessors, (12557), 0 states have call successors, (0), 0 states 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 16:05:03,837 INFO L175 Difference]: Start difference. First operand has 316 places, 3351 transitions, 64622 flow. Second operand 28 states and 3808 transitions. [2023-08-24 16:05:03,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 6996 transitions, 148795 flow Received shutdown request... [2023-08-24 16:06:30,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 16:06:30,236 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 16:06:30,245 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 16:06:30,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-24 16:06:30,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:06:30,445 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-24 16:06:30,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 16:06:30,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 16:06:30,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 16:06:30,447 INFO L445 BasicCegarLoop]: Path program histogram: [7, 6, 4, 2, 1, 1, 1, 1] [2023-08-24 16:06:30,449 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 16:06:30,449 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 16:06:30,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 04:06:30 BasicIcfg [2023-08-24 16:06:30,451 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 16:06:30,451 INFO L158 Benchmark]: Toolchain (without parser) took 817392.07ms. Allocated memory was 373.3MB in the beginning and 14.2GB in the end (delta: 13.9GB). Free memory was 349.5MB in the beginning and 8.6GB in the end (delta: -8.3GB). Peak memory consumption was 10.0GB. Max. memory is 16.0GB. [2023-08-24 16:06:30,451 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory is still 349.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 16:06:30,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.97ms. Allocated memory is still 373.3MB. Free memory was 349.0MB in the beginning and 337.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 16:06:30,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.73ms. Allocated memory is still 373.3MB. Free memory was 336.5MB in the beginning and 334.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 16:06:30,452 INFO L158 Benchmark]: Boogie Preprocessor took 29.40ms. Allocated memory is still 373.3MB. Free memory was 334.4MB in the beginning and 332.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 16:06:30,452 INFO L158 Benchmark]: RCFGBuilder took 439.50ms. Allocated memory is still 373.3MB. Free memory was 332.3MB in the beginning and 296.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-08-24 16:06:30,452 INFO L158 Benchmark]: TraceAbstraction took 816679.66ms. Allocated memory was 373.3MB in the beginning and 14.2GB in the end (delta: 13.9GB). Free memory was 296.1MB in the beginning and 8.6GB in the end (delta: -8.3GB). Peak memory consumption was 10.0GB. Max. memory is 16.0GB. [2023-08-24 16:06:30,453 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory is still 349.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 199.97ms. Allocated memory is still 373.3MB. Free memory was 349.0MB in the beginning and 337.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.73ms. Allocated memory is still 373.3MB. Free memory was 336.5MB in the beginning and 334.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.40ms. Allocated memory is still 373.3MB. Free memory was 334.4MB in the beginning and 332.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 439.50ms. Allocated memory is still 373.3MB. Free memory was 332.3MB in the beginning and 296.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 816679.66ms. Allocated memory was 373.3MB in the beginning and 14.2GB in the end (delta: 13.9GB). Free memory was 296.1MB in the beginning and 8.6GB in the end (delta: -8.3GB). Peak memory consumption was 10.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8s, 196 PlacesBefore, 32 PlacesAfterwards, 204 TransitionsBefore, 28 TransitionsAfterwards, 1960 CoEnabledTransitionPairs, 8 FixpointIterations, 131 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 11 ConcurrentYvCompositions, 12 ChoiceCompositions, 216 TotalNumberOfCompositions, 2787 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2169, independent: 2100, independent conditional: 0, independent unconditional: 2100, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1108, independent: 1085, independent conditional: 0, independent unconditional: 1085, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2169, independent: 1015, independent conditional: 0, independent unconditional: 1015, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 1108, unknown conditional: 0, unknown unconditional: 1108] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 237 locations, 4 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: 816.6s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 786.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 85 mSolverCounterUnknown, 2465 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2465 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 394 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 638 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13904 IncrementalHoareTripleChecker+Invalid, 15021 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 638 mSolverCounterUnsat, 8 mSDtfsCounter, 13904 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1032 GetRequests, 561 SyntacticMatches, 11 SemanticMatches, 460 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 5262 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64622occurred in iteration=22, InterpolantAutomatonStates: 293, 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: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 964 NumberOfCodeBlocks, 964 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1240 ConstructedInterpolants, 50 QuantifiedInterpolants, 17057 SizeOfPredicates, 157 NumberOfNonLiveVariables, 4838 ConjunctsInSsa, 334 ConjunctsInUnsatCore, 49 InterpolantComputations, 13 PerfectInterpolantSequences, 122/268 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown