/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 10:14:53,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 10:14:53,168 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 10:14:53,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 10:14:53,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 10:14:53,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 10:14:53,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 10:14:53,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 10:14:53,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 10:14:53,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 10:14:53,206 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 10:14:53,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 10:14:53,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 10:14:53,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 10:14:53,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 10:14:53,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 10:14:53,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 10:14:53,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 10:14:53,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 10:14:53,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 10:14:53,209 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 10:14:53,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 10:14:53,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 10:14:53,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 10:14:53,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 10:14:53,210 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 10:14:53,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 10:14:53,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 10:14:53,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 10:14:53,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 10:14:53,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 10:14:53,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 10:14:53,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 10:14:53,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 10:14:53,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 10:14:53,212 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 10:14:53,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 10:14:53,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 10:14:53,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 10:14:53,466 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 10:14:53,466 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 10:14:53,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-08-24 10:14:54,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 10:14:54,604 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 10:14:54,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-08-24 10:14:54,610 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37257d127/7bcea6d100cd4a9aa6af521b3b306d1f/FLAGe85d10b28 [2023-08-24 10:14:54,619 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37257d127/7bcea6d100cd4a9aa6af521b3b306d1f [2023-08-24 10:14:54,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 10:14:54,624 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 10:14:54,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 10:14:54,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 10:14:54,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 10:14:54,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4e97ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54, skipping insertion in model container [2023-08-24 10:14:54,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,668 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 10:14:54,835 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-three-array-min.wvr.c[2815,2828] [2023-08-24 10:14:54,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 10:14:54,849 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 10:14:54,880 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-three-array-min.wvr.c[2815,2828] [2023-08-24 10:14:54,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 10:14:54,888 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 10:14:54,889 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 10:14:54,893 INFO L206 MainTranslator]: Completed translation [2023-08-24 10:14:54,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54 WrapperNode [2023-08-24 10:14:54,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 10:14:54,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 10:14:54,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 10:14:54,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 10:14:54,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,946 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 240 [2023-08-24 10:14:54,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 10:14:54,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 10:14:54,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 10:14:54,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 10:14:54,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:54,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 10:14:54,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 10:14:54,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 10:14:54,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 10:14:54,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (1/1) ... [2023-08-24 10:14:55,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 10:14:55,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:14:55,068 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 10:14:55,085 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 10:14:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 10:14:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 10:14:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 10:14:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 10:14:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 10:14:55,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 10:14:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 10:14:55,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 10:14:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 10:14:55,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 10:14:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 10:14:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 10:14:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 10:14:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 10:14:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 10:14:55,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 10:14:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 10:14:55,109 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 10:14:55,188 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 10:14:55,189 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 10:14:55,563 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 10:14:55,634 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 10:14:55,634 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 10:14:55,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 10:14:55 BoogieIcfgContainer [2023-08-24 10:14:55,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 10:14:55,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 10:14:55,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 10:14:55,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 10:14:55,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 10:14:54" (1/3) ... [2023-08-24 10:14:55,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e70e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 10:14:55, skipping insertion in model container [2023-08-24 10:14:55,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:14:54" (2/3) ... [2023-08-24 10:14:55,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e70e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 10:14:55, skipping insertion in model container [2023-08-24 10:14:55,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 10:14:55" (3/3) ... [2023-08-24 10:14:55,657 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2023-08-24 10:14:55,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 10:14:55,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 10:14:55,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 10:14:55,737 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 10:14:55,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 290 transitions, 604 flow [2023-08-24 10:14:55,879 INFO L124 PetriNetUnfolderBase]: 27/287 cut-off events. [2023-08-24 10:14:55,880 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 10:14:55,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 287 events. 27/287 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 234 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2023-08-24 10:14:55,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 290 transitions, 604 flow [2023-08-24 10:14:55,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 277 transitions, 572 flow [2023-08-24 10:14:55,904 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 10:14:55,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 277 transitions, 572 flow [2023-08-24 10:14:55,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 277 transitions, 572 flow [2023-08-24 10:14:55,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 277 transitions, 572 flow [2023-08-24 10:14:55,974 INFO L124 PetriNetUnfolderBase]: 27/277 cut-off events. [2023-08-24 10:14:55,975 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 10:14:55,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 277 events. 27/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2023-08-24 10:14:55,978 INFO L119 LiptonReduction]: Number of co-enabled transitions 2904 [2023-08-24 10:15:02,805 INFO L134 LiptonReduction]: Checked pairs total: 4130 [2023-08-24 10:15:02,806 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-08-24 10:15:02,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 10:15:02,826 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;@4e573ad6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 10:15:02,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 10:15:02,836 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 10:15:02,837 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2023-08-24 10:15:02,837 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 10:15:02,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:02,837 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 10:15:02,838 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 10:15:02,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash -963094014, now seen corresponding path program 1 times [2023-08-24 10:15:02,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808194702] [2023-08-24 10:15:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:03,303 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 10:15:03,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808194702] [2023-08-24 10:15:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808194702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:15:03,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:15:03,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 10:15:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462878854] [2023-08-24 10:15:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:15:03,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 10:15:03,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 10:15:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 10:15:03,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 600 [2023-08-24 10:15:03,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:03,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:03,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 600 [2023-08-24 10:15:03,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:03,478 INFO L124 PetriNetUnfolderBase]: 787/1050 cut-off events. [2023-08-24 10:15:03,478 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-24 10:15:03,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1050 events. 787/1050 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3696 event pairs, 357 based on Foata normal form. 0/603 useless extension candidates. Maximal degree in co-relation 1871. Up to 1027 conditions per place. [2023-08-24 10:15:03,486 INFO L140 encePairwiseOnDemand]: 597/600 looper letters, 31 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-24 10:15:03,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 156 flow [2023-08-24 10:15:03,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 10:15:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 10:15:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2023-08-24 10:15:03,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37722222222222224 [2023-08-24 10:15:03,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2023-08-24 10:15:03,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2023-08-24 10:15:03,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:03,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2023-08-24 10:15:03,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:03,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:03,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:03,521 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 3 states and 679 transitions. [2023-08-24 10:15:03,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 156 flow [2023-08-24 10:15:03,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 144 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 10:15:03,528 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 88 flow [2023-08-24 10:15:03,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-08-24 10:15:03,531 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-08-24 10:15:03,532 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 88 flow [2023-08-24 10:15:03,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:03,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:03,533 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 10:15:03,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 10:15:03,533 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 10:15:03,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1128208641, now seen corresponding path program 1 times [2023-08-24 10:15:03,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:03,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292739722] [2023-08-24 10:15:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:15:03,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:03,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292739722] [2023-08-24 10:15:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292739722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:03,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446313046] [2023-08-24 10:15:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:03,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:03,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:15:03,713 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 10:15:03,749 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 10:15:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:03,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 10:15:03,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:15:03,895 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 10:15:03,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 10:15:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446313046] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:15:03,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 10:15:03,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-08-24 10:15:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021011332] [2023-08-24 10:15:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:15:03,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 10:15:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 10:15:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 10:15:03,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 600 [2023-08-24 10:15:03,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:03,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:03,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 600 [2023-08-24 10:15:03,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:04,010 INFO L124 PetriNetUnfolderBase]: 787/1052 cut-off events. [2023-08-24 10:15:04,010 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 10:15:04,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 1052 events. 787/1052 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3704 event pairs, 357 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 2108. Up to 1026 conditions per place. [2023-08-24 10:15:04,015 INFO L140 encePairwiseOnDemand]: 593/600 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-08-24 10:15:04,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 162 flow [2023-08-24 10:15:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 10:15:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 10:15:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 897 transitions. [2023-08-24 10:15:04,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37375 [2023-08-24 10:15:04,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 897 transitions. [2023-08-24 10:15:04,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 897 transitions. [2023-08-24 10:15:04,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:04,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 897 transitions. [2023-08-24 10:15:04,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 600.0) internal successors, (3000), 5 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 600.0) internal successors, (3000), 5 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,023 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 88 flow. Second operand 4 states and 897 transitions. [2023-08-24 10:15:04,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 162 flow [2023-08-24 10:15:04,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 10:15:04,024 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 112 flow [2023-08-24 10:15:04,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-08-24 10:15:04,025 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-24 10:15:04,025 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 112 flow [2023-08-24 10:15:04,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:04,026 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 10:15:04,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 10:15:04,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:04,232 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 10:15:04,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash 802689150, now seen corresponding path program 1 times [2023-08-24 10:15:04,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:04,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705961254] [2023-08-24 10:15:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:04,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 10:15:04,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:04,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705961254] [2023-08-24 10:15:04,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705961254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:15:04,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:15:04,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 10:15:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319058397] [2023-08-24 10:15:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:15:04,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 10:15:04,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 10:15:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 10:15:04,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 600 [2023-08-24 10:15:04,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:04,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 600 [2023-08-24 10:15:04,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:04,567 INFO L124 PetriNetUnfolderBase]: 1449/1926 cut-off events. [2023-08-24 10:15:04,568 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-24 10:15:04,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3898 conditions, 1926 events. 1449/1926 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7587 event pairs, 303 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 3878. Up to 1172 conditions per place. [2023-08-24 10:15:04,575 INFO L140 encePairwiseOnDemand]: 595/600 looper letters, 53 selfloop transitions, 4 changer transitions 1/61 dead transitions. [2023-08-24 10:15:04,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 279 flow [2023-08-24 10:15:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 10:15:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 10:15:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 803 transitions. [2023-08-24 10:15:04,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461111111111111 [2023-08-24 10:15:04,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 803 transitions. [2023-08-24 10:15:04,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 803 transitions. [2023-08-24 10:15:04,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:04,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 803 transitions. [2023-08-24 10:15:04,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,582 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 112 flow. Second operand 3 states and 803 transitions. [2023-08-24 10:15:04,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 279 flow [2023-08-24 10:15:04,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 10:15:04,583 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 137 flow [2023-08-24 10:15:04,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-08-24 10:15:04,584 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-24 10:15:04,584 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 137 flow [2023-08-24 10:15:04,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:04,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:15:04,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 10:15:04,585 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 10:15:04,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash -296266314, now seen corresponding path program 1 times [2023-08-24 10:15:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184365841] [2023-08-24 10:15:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 10:15:04,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:04,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184365841] [2023-08-24 10:15:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184365841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:04,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244800595] [2023-08-24 10:15:04,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:04,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:04,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:15:04,679 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 10:15:04,695 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 10:15:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:04,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 10:15:04,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:15:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 10:15:04,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:15:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 10:15:04,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244800595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:15:04,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:15:04,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 10:15:04,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602657983] [2023-08-24 10:15:04,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:15:04,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 10:15:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:04,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 10:15:04,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-24 10:15:04,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 600 [2023-08-24 10:15:04,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 137 flow. Second operand has 12 states, 12 states have (on average 213.91666666666666) internal successors, (2567), 12 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:04,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:04,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 600 [2023-08-24 10:15:04,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:05,321 INFO L124 PetriNetUnfolderBase]: 2230/3081 cut-off events. [2023-08-24 10:15:05,321 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2023-08-24 10:15:05,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 3081 events. 2230/3081 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 14171 event pairs, 790 based on Foata normal form. 0/2132 useless extension candidates. Maximal degree in co-relation 4085. Up to 1468 conditions per place. [2023-08-24 10:15:05,331 INFO L140 encePairwiseOnDemand]: 589/600 looper letters, 90 selfloop transitions, 22 changer transitions 0/114 dead transitions. [2023-08-24 10:15:05,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 114 transitions, 589 flow [2023-08-24 10:15:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 10:15:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 10:15:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2215 transitions. [2023-08-24 10:15:05,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36916666666666664 [2023-08-24 10:15:05,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2215 transitions. [2023-08-24 10:15:05,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2215 transitions. [2023-08-24 10:15:05,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:05,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2215 transitions. [2023-08-24 10:15:05,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 221.5) internal successors, (2215), 10 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:05,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 600.0) internal successors, (6600), 11 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:05,349 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 600.0) internal successors, (6600), 11 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:05,350 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 137 flow. Second operand 10 states and 2215 transitions. [2023-08-24 10:15:05,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 114 transitions, 589 flow [2023-08-24 10:15:05,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 114 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 10:15:05,354 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 292 flow [2023-08-24 10:15:05,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2023-08-24 10:15:05,357 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-08-24 10:15:05,357 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 292 flow [2023-08-24 10:15:05,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 213.91666666666666) internal successors, (2567), 12 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:05,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:05,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:15:05,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 10:15:05,565 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,SelfDestructingSolverStorable3 [2023-08-24 10:15:05,566 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 10:15:05,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1525373573, now seen corresponding path program 1 times [2023-08-24 10:15:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586763578] [2023-08-24 10:15:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:05,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 10:15:05,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586763578] [2023-08-24 10:15:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586763578] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:05,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491047306] [2023-08-24 10:15:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:05,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:05,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:15:05,713 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 10:15:05,732 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 10:15:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:05,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 10:15:05,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:15:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 10:15:05,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:15:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 10:15:05,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491047306] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:15:05,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:15:05,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 10:15:05,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672988394] [2023-08-24 10:15:05,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:15:05,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 10:15:05,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 10:15:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-24 10:15:05,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 600 [2023-08-24 10:15:05,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 292 flow. Second operand has 12 states, 12 states have (on average 210.0) internal successors, (2520), 12 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:05,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:05,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 600 [2023-08-24 10:15:05,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:06,142 INFO L124 PetriNetUnfolderBase]: 1642/2243 cut-off events. [2023-08-24 10:15:06,142 INFO L125 PetriNetUnfolderBase]: For 376/393 co-relation queries the response was YES. [2023-08-24 10:15:06,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5583 conditions, 2243 events. 1642/2243 cut-off events. For 376/393 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 9048 event pairs, 823 based on Foata normal form. 17/1625 useless extension candidates. Maximal degree in co-relation 5042. Up to 1987 conditions per place. [2023-08-24 10:15:06,151 INFO L140 encePairwiseOnDemand]: 589/600 looper letters, 33 selfloop transitions, 9 changer transitions 38/82 dead transitions. [2023-08-24 10:15:06,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 82 transitions, 522 flow [2023-08-24 10:15:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 10:15:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 10:15:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1730 transitions. [2023-08-24 10:15:06,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36041666666666666 [2023-08-24 10:15:06,164 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1730 transitions. [2023-08-24 10:15:06,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1730 transitions. [2023-08-24 10:15:06,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:06,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1730 transitions. [2023-08-24 10:15:06,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 216.25) internal successors, (1730), 8 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 600.0) internal successors, (5400), 9 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,171 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 600.0) internal successors, (5400), 9 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,171 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 292 flow. Second operand 8 states and 1730 transitions. [2023-08-24 10:15:06,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 82 transitions, 522 flow [2023-08-24 10:15:06,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 494 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-24 10:15:06,174 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 210 flow [2023-08-24 10:15:06,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-24 10:15:06,175 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 23 predicate places. [2023-08-24 10:15:06,175 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 210 flow [2023-08-24 10:15:06,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.0) internal successors, (2520), 12 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:06,176 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:15:06,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 10:15:06,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:06,380 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 10:15:06,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:06,381 INFO L85 PathProgramCache]: Analyzing trace with hash -827810902, now seen corresponding path program 2 times [2023-08-24 10:15:06,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:06,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796234264] [2023-08-24 10:15:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:06,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 10:15:06,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:06,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796234264] [2023-08-24 10:15:06,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796234264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:06,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4881] [2023-08-24 10:15:06,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 10:15:06,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:15:06,505 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 10:15:06,543 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 10:15:06,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 10:15:06,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:15:06,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 10:15:06,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:15:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 10:15:06,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:15:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 10:15:06,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4881] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:06,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 10:15:06,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-08-24 10:15:06,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354652381] [2023-08-24 10:15:06,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:15:06,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 10:15:06,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 10:15:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-24 10:15:06,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 600 [2023-08-24 10:15:06,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 215.33333333333334) internal successors, (1292), 6 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:06,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 600 [2023-08-24 10:15:06,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:06,972 INFO L124 PetriNetUnfolderBase]: 1804/2426 cut-off events. [2023-08-24 10:15:06,972 INFO L125 PetriNetUnfolderBase]: For 631/631 co-relation queries the response was YES. [2023-08-24 10:15:06,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6488 conditions, 2426 events. 1804/2426 cut-off events. For 631/631 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10006 event pairs, 730 based on Foata normal form. 0/1829 useless extension candidates. Maximal degree in co-relation 6465. Up to 1822 conditions per place. [2023-08-24 10:15:06,981 INFO L140 encePairwiseOnDemand]: 595/600 looper letters, 57 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2023-08-24 10:15:06,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 401 flow [2023-08-24 10:15:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 10:15:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 10:15:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1319 transitions. [2023-08-24 10:15:06,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663888888888889 [2023-08-24 10:15:06,984 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1319 transitions. [2023-08-24 10:15:06,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1319 transitions. [2023-08-24 10:15:06,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:06,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1319 transitions. [2023-08-24 10:15:06,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.83333333333334) internal successors, (1319), 6 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 600.0) internal successors, (4200), 7 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,990 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 600.0) internal successors, (4200), 7 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,990 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 210 flow. Second operand 6 states and 1319 transitions. [2023-08-24 10:15:06,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 401 flow [2023-08-24 10:15:06,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 347 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-08-24 10:15:06,997 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 185 flow [2023-08-24 10:15:06,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-24 10:15:06,997 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-24 10:15:06,998 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 185 flow [2023-08-24 10:15:06,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.33333333333334) internal successors, (1292), 6 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:06,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:06,998 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:15:07,005 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 10:15:07,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:07,203 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 10:15:07,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash 495019740, now seen corresponding path program 1 times [2023-08-24 10:15:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028814397] [2023-08-24 10:15:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-24 10:15:07,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:07,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028814397] [2023-08-24 10:15:07,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028814397] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:07,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016614886] [2023-08-24 10:15:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:07,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:07,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:15:07,361 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 10:15:07,387 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 10:15:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:07,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 10:15:07,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:15:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-24 10:15:07,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:15:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-24 10:15:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016614886] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:07,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 10:15:07,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-08-24 10:15:07,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987768924] [2023-08-24 10:15:07,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:15:07,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 10:15:07,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:07,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 10:15:07,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-24 10:15:07,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 600 [2023-08-24 10:15:07,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 211.5) internal successors, (1269), 6 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:07,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:07,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 600 [2023-08-24 10:15:07,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:07,700 INFO L124 PetriNetUnfolderBase]: 1346/1812 cut-off events. [2023-08-24 10:15:07,700 INFO L125 PetriNetUnfolderBase]: For 498/633 co-relation queries the response was YES. [2023-08-24 10:15:07,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 1812 events. 1346/1812 cut-off events. For 498/633 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7392 event pairs, 200 based on Foata normal form. 135/1527 useless extension candidates. Maximal degree in co-relation 4617. Up to 1279 conditions per place. [2023-08-24 10:15:07,708 INFO L140 encePairwiseOnDemand]: 593/600 looper letters, 50 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-08-24 10:15:07,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 346 flow [2023-08-24 10:15:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 10:15:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 10:15:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1291 transitions. [2023-08-24 10:15:07,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586111111111111 [2023-08-24 10:15:07,712 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1291 transitions. [2023-08-24 10:15:07,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1291 transitions. [2023-08-24 10:15:07,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:07,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1291 transitions. [2023-08-24 10:15:07,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:07,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 600.0) internal successors, (4200), 7 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:07,718 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 600.0) internal successors, (4200), 7 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:07,718 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 185 flow. Second operand 6 states and 1291 transitions. [2023-08-24 10:15:07,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 346 flow [2023-08-24 10:15:07,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 331 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-24 10:15:07,770 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 210 flow [2023-08-24 10:15:07,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-24 10:15:07,770 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-08-24 10:15:07,771 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 210 flow [2023-08-24 10:15:07,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.5) internal successors, (1269), 6 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:07,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:07,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:15:07,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 10:15:07,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:07,972 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 10:15:07,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1020146927, now seen corresponding path program 1 times [2023-08-24 10:15:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416360447] [2023-08-24 10:15:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-24 10:15:08,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:08,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416360447] [2023-08-24 10:15:08,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416360447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:15:08,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:15:08,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 10:15:08,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835899810] [2023-08-24 10:15:08,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:15:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 10:15:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 10:15:08,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 10:15:08,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 600 [2023-08-24 10:15:08,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 243.66666666666666) internal successors, (1462), 6 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:08,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 600 [2023-08-24 10:15:08,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:08,287 INFO L124 PetriNetUnfolderBase]: 1889/2588 cut-off events. [2023-08-24 10:15:08,287 INFO L125 PetriNetUnfolderBase]: For 1087/1301 co-relation queries the response was YES. [2023-08-24 10:15:08,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6932 conditions, 2588 events. 1889/2588 cut-off events. For 1087/1301 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11236 event pairs, 48 based on Foata normal form. 288/2376 useless extension candidates. Maximal degree in co-relation 6896. Up to 866 conditions per place. [2023-08-24 10:15:08,297 INFO L140 encePairwiseOnDemand]: 593/600 looper letters, 110 selfloop transitions, 12 changer transitions 0/123 dead transitions. [2023-08-24 10:15:08,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 123 transitions, 696 flow [2023-08-24 10:15:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 10:15:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 10:15:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1778 transitions. [2023-08-24 10:15:08,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2023-08-24 10:15:08,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1778 transitions. [2023-08-24 10:15:08,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1778 transitions. [2023-08-24 10:15:08,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:08,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1778 transitions. [2023-08-24 10:15:08,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 600.0) internal successors, (4800), 8 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 600.0) internal successors, (4800), 8 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,307 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 210 flow. Second operand 7 states and 1778 transitions. [2023-08-24 10:15:08,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 123 transitions, 696 flow [2023-08-24 10:15:08,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 10:15:08,312 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 299 flow [2023-08-24 10:15:08,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-08-24 10:15:08,313 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2023-08-24 10:15:08,313 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 299 flow [2023-08-24 10:15:08,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.66666666666666) internal successors, (1462), 6 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:08,313 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:15:08,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 10:15:08,314 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 10:15:08,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:08,314 INFO L85 PathProgramCache]: Analyzing trace with hash 470588981, now seen corresponding path program 2 times [2023-08-24 10:15:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:08,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387166941] [2023-08-24 10:15:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:08,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 10:15:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387166941] [2023-08-24 10:15:08,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387166941] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793845160] [2023-08-24 10:15:08,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 10:15:08,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:08,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:15:08,391 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 10:15:08,444 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 10:15:08,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 10:15:08,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:15:08,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 10:15:08,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:15:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-24 10:15:08,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:15:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-24 10:15:08,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793845160] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:08,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 10:15:08,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-08-24 10:15:08,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484038255] [2023-08-24 10:15:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:15:08,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 10:15:08,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:15:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 10:15:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-24 10:15:08,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 600 [2023-08-24 10:15:08,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 215.66666666666666) internal successors, (1294), 6 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:15:08,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 600 [2023-08-24 10:15:08,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:15:08,894 INFO L124 PetriNetUnfolderBase]: 1942/2638 cut-off events. [2023-08-24 10:15:08,894 INFO L125 PetriNetUnfolderBase]: For 3341/3648 co-relation queries the response was YES. [2023-08-24 10:15:08,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7837 conditions, 2638 events. 1942/2638 cut-off events. For 3341/3648 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10449 event pairs, 555 based on Foata normal form. 411/2481 useless extension candidates. Maximal degree in co-relation 7799. Up to 1498 conditions per place. [2023-08-24 10:15:08,906 INFO L140 encePairwiseOnDemand]: 593/600 looper letters, 62 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2023-08-24 10:15:08,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 548 flow [2023-08-24 10:15:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 10:15:08,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 10:15:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2023-08-24 10:15:08,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661111111111111 [2023-08-24 10:15:08,909 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1318 transitions. [2023-08-24 10:15:08,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1318 transitions. [2023-08-24 10:15:08,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:15:08,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1318 transitions. [2023-08-24 10:15:08,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 600.0) internal successors, (4200), 7 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,914 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 600.0) internal successors, (4200), 7 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,914 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 299 flow. Second operand 6 states and 1318 transitions. [2023-08-24 10:15:08,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 548 flow [2023-08-24 10:15:08,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 525 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-24 10:15:08,922 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 342 flow [2023-08-24 10:15:08,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-24 10:15:08,922 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2023-08-24 10:15:08,922 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 342 flow [2023-08-24 10:15:08,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.66666666666666) internal successors, (1294), 6 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:15:08,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:15:08,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:15:08,946 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 10:15:09,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:09,127 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 10:15:09,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:15:09,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1758351541, now seen corresponding path program 1 times [2023-08-24 10:15:09,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:15:09,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521449837] [2023-08-24 10:15:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:09,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:15:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-24 10:15:10,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:15:10,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521449837] [2023-08-24 10:15:10,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521449837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:15:10,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25916033] [2023-08-24 10:15:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:15:10,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:15:10,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:15:10,697 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 10:15:10,699 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 10:15:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:15:10,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 65 conjunts are in the unsatisfiable core [2023-08-24 10:15:10,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:15:10,911 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 10:15:10,970 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 10:15:10,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-24 10:15:11,068 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:15:11,068 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2023-08-24 10:15:11,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 10:15:11,352 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 16 treesize of output 18 [2023-08-24 10:15:11,558 INFO L322 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2023-08-24 10:15:11,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 42 [2023-08-24 10:15:11,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 10:15:11,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 10:15:11,943 INFO L322 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2023-08-24 10:15:11,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 125 treesize of output 138 [2023-08-24 10:15:14,007 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:15:14,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 330 treesize of output 882 [2023-08-24 10:15:22,358 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 21 treesize of output 17 [2023-08-24 10:15:27,291 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 21 treesize of output 17 [2023-08-24 10:15:28,033 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 21 treesize of output 17 [2023-08-24 10:15:29,788 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 21 treesize of output 17 [2023-08-24 10:16:05,160 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 21 treesize of output 17 [2023-08-24 10:16:05,281 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 25 treesize of output 19 [2023-08-24 10:16:11,783 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 25 treesize of output 19 [2023-08-24 10:16:11,822 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 18 treesize of output 14 [2023-08-24 10:16:23,812 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 32 treesize of output 20 [2023-08-24 10:16:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-24 10:16:23,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:16:24,131 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* c_thread1Thread1of1ForFork1_~i~0 4) c_~B~0.offset))) (let ((.cse0 (select (select |c_#memory_int| c_~B~0.base) .cse3)) (.cse2 (+ c_~C~0.offset 4))) (and (or (<= .cse0 c_~minb~0) (let ((.cse1 (+ c_~mina~0 c_~minb~0))) (and (<= .cse1 c_~minc~0) (forall ((v_ArrVal_569 (Array Int Int))) (<= .cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_569) c_~C~0.base) .cse2)))))) (or (< c_~minb~0 .cse0) (and (forall ((v_ArrVal_569 (Array Int Int))) (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_569) c_~B~0.base) .cse3) c_~mina~0) c_~minc~0)) (forall ((v_ArrVal_569 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_569))) (<= (+ (select (select .cse4 c_~B~0.base) .cse3) c_~mina~0) (select (select .cse4 c_~C~0.base) .cse2))))))))) is different from false [2023-08-24 10:16:24,203 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_thread2Thread1of1ForFork2_~i~1#1| 4))) (let ((.cse0 (+ c_~mina~0 c_~minb~0)) (.cse4 (+ (select (select |c_#memory_int| c_~B~0.base) (+ .cse2 c_~B~0.offset)) (select (select |c_#memory_int| c_~A~0.base) (+ .cse2 c_~A~0.offset)))) (.cse3 (+ (* c_thread1Thread1of1ForFork1_~i~0 4) c_~B~0.offset)) (.cse1 (select |c_#memory_int| c_~C~0.base))) (and (or (<= .cse0 c_~minc~0) (forall ((~C~0.offset Int) (v_ArrVal_567 Int)) (or (<= (select (select (store |c_#memory_int| c_~C~0.base (store .cse1 (+ .cse2 ~C~0.offset) v_ArrVal_567)) c_~B~0.base) .cse3) c_~minb~0) (< v_ArrVal_567 .cse4)))) (forall ((v_ArrVal_567 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse5 (store |c_#memory_int| c_~C~0.base (store .cse1 (+ .cse2 ~C~0.offset) v_ArrVal_567)))) (or (<= (select (select .cse5 c_~B~0.base) .cse3) c_~minb~0) (forall ((v_ArrVal_569 (Array Int Int))) (<= .cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_569) c_~C~0.base) (+ ~C~0.offset 4))))))) (< v_ArrVal_567 .cse4))) (forall ((v_ArrVal_567 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse6 (store |c_#memory_int| c_~C~0.base (store .cse1 (+ .cse2 ~C~0.offset) v_ArrVal_567)))) (or (forall ((v_ArrVal_569 (Array Int Int))) (<= (+ (select (select (store .cse6 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_569) c_~B~0.base) .cse3) c_~mina~0) c_~minc~0)) (< c_~minb~0 (select (select .cse6 c_~B~0.base) .cse3))))) (< v_ArrVal_567 .cse4))) (forall ((v_ArrVal_567 Int)) (or (< v_ArrVal_567 .cse4) (forall ((~C~0.offset Int)) (let ((.cse7 (store |c_#memory_int| c_~C~0.base (store .cse1 (+ .cse2 ~C~0.offset) v_ArrVal_567)))) (or (< c_~minb~0 (select (select .cse7 c_~B~0.base) .cse3)) (forall ((v_ArrVal_569 (Array Int Int))) (let ((.cse8 (store .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_569))) (<= (+ (select (select .cse8 c_~B~0.base) .cse3) c_~mina~0) (select (select .cse8 c_~C~0.base) (+ ~C~0.offset 4))))))))))))) is different from false [2023-08-24 10:16:24,907 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:16:24,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3647 treesize of output 3539 [2023-08-24 10:16:24,965 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 2145 treesize of output 2097 [2023-08-24 10:16:25,013 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:16:25,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2181 treesize of output 2148 [2023-08-24 10:16:25,062 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:16:25,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2117 treesize of output 1972 [2023-08-24 10:16:25,125 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:16:25,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2081 treesize of output 2024 [2023-08-24 10:16:25,194 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:16:25,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2033 treesize of output 2024 [2023-08-24 10:16:25,293 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:16:25,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2033 treesize of output 2024 [2023-08-24 10:16:25,350 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 1993 treesize of output 1985 Received shutdown request... [2023-08-24 10:29:05,408 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-24 10:29:05,410 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 10:29:05,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-24 10:29:05,434 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 10:29:05,434 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 10:29:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:29:05,615 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 17ms.. [2023-08-24 10:29:05,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 10:29:05,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 10:29:05,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 10:29:05,617 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-24 10:29:05,620 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 10:29:05,620 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 10:29:05,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 10:29:05 BasicIcfg [2023-08-24 10:29:05,623 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 10:29:05,623 INFO L158 Benchmark]: Toolchain (without parser) took 850998.71ms. Allocated memory was 396.4MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 368.7MB in the beginning and 888.3MB in the end (delta: -519.6MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-24 10:29:05,623 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 396.4MB. Free memory is still 372.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 10:29:05,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.96ms. Allocated memory is still 396.4MB. Free memory was 368.2MB in the beginning and 356.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 10:29:05,623 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.95ms. Allocated memory is still 396.4MB. Free memory was 356.1MB in the beginning and 353.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 10:29:05,623 INFO L158 Benchmark]: Boogie Preprocessor took 47.15ms. Allocated memory is still 396.4MB. Free memory was 353.6MB in the beginning and 351.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 10:29:05,624 INFO L158 Benchmark]: RCFGBuilder took 641.19ms. Allocated memory is still 396.4MB. Free memory was 351.5MB in the beginning and 319.4MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-24 10:29:05,624 INFO L158 Benchmark]: TraceAbstraction took 849971.06ms. Allocated memory was 396.4MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 372.7MB in the beginning and 888.3MB in the end (delta: -515.5MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-24 10:29:05,628 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 396.4MB. Free memory is still 372.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 268.96ms. Allocated memory is still 396.4MB. Free memory was 368.2MB in the beginning and 356.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.95ms. Allocated memory is still 396.4MB. Free memory was 356.1MB in the beginning and 353.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.15ms. Allocated memory is still 396.4MB. Free memory was 353.6MB in the beginning and 351.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 641.19ms. Allocated memory is still 396.4MB. Free memory was 351.5MB in the beginning and 319.4MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 849971.06ms. Allocated memory was 396.4MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 372.7MB in the beginning and 888.3MB in the end (delta: -515.5MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 260 PlacesBefore, 37 PlacesAfterwards, 277 TransitionsBefore, 35 TransitionsAfterwards, 2904 CoEnabledTransitionPairs, 7 FixpointIterations, 184 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 54 TrivialYvCompositions, 13 ConcurrentYvCompositions, 19 ChoiceCompositions, 310 TotalNumberOfCompositions, 4130 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3175, independent: 3075, independent conditional: 0, independent unconditional: 3075, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1598, independent: 1568, independent conditional: 0, independent unconditional: 1568, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3175, independent: 1507, independent conditional: 0, independent unconditional: 1507, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 1598, unknown conditional: 0, unknown unconditional: 1598] , Statistics on independence cache: Total cache size (in pairs): 122, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 17ms.. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 17ms.. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 17ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 17ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 312 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: 849.9s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 370 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 370 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1080 IncrementalHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 9 mSDtfsCounter, 1080 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 360 GetRequests, 284 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=342occurred in iteration=9, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 1270 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2110 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 116/136 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