/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 08:01:38,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 08:01:38,785 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 [2023-08-27 08:01:38,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 08:01:38,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 08:01:38,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 08:01:38,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 08:01:38,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 08:01:38,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 08:01:38,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 08:01:38,815 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 08:01:38,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 08:01:38,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 08:01:38,816 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 08:01:38,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 08:01:38,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 08:01:38,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 08:01:38,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 08:01:38,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 08:01:38,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 08:01:38,818 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 08:01:38,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 08:01:38,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 08:01:38,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 08:01:38,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 08:01:38,826 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 08:01:38,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 08:01:38,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:01:38,829 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 08:01:38,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 08:01:38,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 08:01:38,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 08:01:38,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 08:01:38,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 08:01:38,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 08:01:38,831 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 08:01:39,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 08:01:39,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 08:01:39,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 08:01:39,138 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 08:01:39,141 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 08:01:39,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-08-27 08:01:40,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 08:01:40,673 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 08:01:40,674 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-08-27 08:01:40,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/537bd7eb4/4076cf70af8946b48c50f2d84d85b790/FLAGe9422532a [2023-08-27 08:01:40,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/537bd7eb4/4076cf70af8946b48c50f2d84d85b790 [2023-08-27 08:01:40,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 08:01:40,699 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 08:01:40,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 08:01:40,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 08:01:40,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 08:01:40,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:40,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc5eda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40, skipping insertion in model container [2023-08-27 08:01:40,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:40,736 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 08:01:40,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:01:40,912 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 08:01:40,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:01:40,963 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:01:40,963 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:01:40,968 INFO L206 MainTranslator]: Completed translation [2023-08-27 08:01:40,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40 WrapperNode [2023-08-27 08:01:40,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 08:01:40,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 08:01:40,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 08:01:40,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 08:01:40,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:40,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,020 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 111 [2023-08-27 08:01:41,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 08:01:41,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 08:01:41,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 08:01:41,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 08:01:41,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 08:01:41,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 08:01:41,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 08:01:41,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 08:01:41,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (1/1) ... [2023-08-27 08:01:41,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:01:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:41,090 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) [2023-08-27 08:01:41,115 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 [2023-08-27 08:01:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 08:01:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 08:01:41,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 08:01:41,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 08:01:41,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 08:01:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 08:01:41,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 08:01:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 08:01:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 08:01:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 08:01:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 08:01:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 08:01:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 08:01:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 08:01:41,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 08:01:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 08:01:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 08:01:41,133 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 08:01:41,256 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 08:01:41,260 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 08:01:41,559 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 08:01:41,620 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 08:01:41,620 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 08:01:41,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:01:41 BoogieIcfgContainer [2023-08-27 08:01:41,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 08:01:41,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 08:01:41,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 08:01:41,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 08:01:41,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 08:01:40" (1/3) ... [2023-08-27 08:01:41,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a98beed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:01:41, skipping insertion in model container [2023-08-27 08:01:41,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:01:40" (2/3) ... [2023-08-27 08:01:41,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a98beed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:01:41, skipping insertion in model container [2023-08-27 08:01:41,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:01:41" (3/3) ... [2023-08-27 08:01:41,630 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-08-27 08:01:41,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 08:01:41,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 08:01:41,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 08:01:41,746 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 08:01:41,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 156 transitions, 336 flow [2023-08-27 08:01:41,879 INFO L124 PetriNetUnfolderBase]: 10/153 cut-off events. [2023-08-27 08:01:41,879 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 08:01:41,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 10/153 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 128 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-08-27 08:01:41,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 156 transitions, 336 flow [2023-08-27 08:01:41,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 142 transitions, 302 flow [2023-08-27 08:01:41,895 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 08:01:41,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 142 transitions, 302 flow [2023-08-27 08:01:41,916 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 142 transitions, 302 flow [2023-08-27 08:01:41,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 142 transitions, 302 flow [2023-08-27 08:01:41,956 INFO L124 PetriNetUnfolderBase]: 10/142 cut-off events. [2023-08-27 08:01:41,956 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 08:01:41,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 10/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-08-27 08:01:41,958 INFO L119 LiptonReduction]: Number of co-enabled transitions 1494 [2023-08-27 08:01:46,928 INFO L134 LiptonReduction]: Checked pairs total: 2078 [2023-08-27 08:01:46,928 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-27 08:01:46,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 08:01:46,946 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;@2ad7f56d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 08:01:46,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-27 08:01:46,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 08:01:46,949 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 08:01:46,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 08:01:46,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:46,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 08:01:46,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:46,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash 19584, now seen corresponding path program 1 times [2023-08-27 08:01:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:46,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829408098] [2023-08-27 08:01:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:46,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:47,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829408098] [2023-08-27 08:01:47,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829408098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:47,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:01:47,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:01:47,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386948350] [2023-08-27 08:01:47,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:47,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:01:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:01:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:01:47,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-08-27 08:01:47,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:47,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-08-27 08:01:47,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:47,392 INFO L124 PetriNetUnfolderBase]: 511/702 cut-off events. [2023-08-27 08:01:47,393 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-27 08:01:47,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 702 events. 511/702 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2520 event pairs, 267 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 1302. Up to 696 conditions per place. [2023-08-27 08:01:47,400 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2023-08-27 08:01:47,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 134 flow [2023-08-27 08:01:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:01:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:01:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2023-08-27 08:01:47,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459546925566343 [2023-08-27 08:01:47,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2023-08-27 08:01:47,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2023-08-27 08:01:47,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:47,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2023-08-27 08:01:47,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,428 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 74 flow. Second operand 3 states and 426 transitions. [2023-08-27 08:01:47,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 134 flow [2023-08-27 08:01:47,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 08:01:47,433 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 83 flow [2023-08-27 08:01:47,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2023-08-27 08:01:47,437 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2023-08-27 08:01:47,438 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 83 flow [2023-08-27 08:01:47,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:47,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 08:01:47,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 08:01:47,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:47,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:47,448 INFO L85 PathProgramCache]: Analyzing trace with hash 608367, now seen corresponding path program 1 times [2023-08-27 08:01:47,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:47,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844774761] [2023-08-27 08:01:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844774761] [2023-08-27 08:01:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844774761] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951229208] [2023-08-27 08:01:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:47,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:47,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:47,587 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) [2023-08-27 08:01:47,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 08:01:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:47,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:01:47,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:47,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:01:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951229208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:47,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:01:47,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 08:01:47,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222775516] [2023-08-27 08:01:47,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:47,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:01:47,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:47,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:01:47,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:01:47,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-08-27 08:01:47,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:47,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-08-27 08:01:47,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:47,832 INFO L124 PetriNetUnfolderBase]: 511/701 cut-off events. [2023-08-27 08:01:47,833 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 08:01:47,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 701 events. 511/701 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2533 event pairs, 267 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 1415. Up to 692 conditions per place. [2023-08-27 08:01:47,839 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 23 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-08-27 08:01:47,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 133 flow [2023-08-27 08:01:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:01:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:01:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-27 08:01:47,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44983818770226536 [2023-08-27 08:01:47,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-27 08:01:47,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-27 08:01:47,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:47,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-27 08:01:47,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,858 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 83 flow. Second operand 4 states and 556 transitions. [2023-08-27 08:01:47,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 133 flow [2023-08-27 08:01:47,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 128 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 08:01:47,859 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 82 flow [2023-08-27 08:01:47,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-08-27 08:01:47,860 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-08-27 08:01:47,860 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 82 flow [2023-08-27 08:01:47,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:47,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:47,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 08:01:47,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:48,067 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 [2023-08-27 08:01:48,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:48,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash 608368, now seen corresponding path program 1 times [2023-08-27 08:01:48,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:48,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955759790] [2023-08-27 08:01:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:48,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:48,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:48,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955759790] [2023-08-27 08:01:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955759790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450812012] [2023-08-27 08:01:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:48,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:48,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:48,116 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) [2023-08-27 08:01:48,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 08:01:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:48,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:01:48,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:48,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:01:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:48,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450812012] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:01:48,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:01:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 08:01:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408595726] [2023-08-27 08:01:48,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:01:48,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:01:48,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:48,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:01:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:01:48,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-08-27 08:01:48,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:48,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-08-27 08:01:48,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:48,377 INFO L124 PetriNetUnfolderBase]: 514/707 cut-off events. [2023-08-27 08:01:48,377 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 08:01:48,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 707 events. 514/707 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2562 event pairs, 267 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 1415. Up to 698 conditions per place. [2023-08-27 08:01:48,383 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 24 selfloop transitions, 9 changer transitions 0/35 dead transitions. [2023-08-27 08:01:48,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 178 flow [2023-08-27 08:01:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:01:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:01:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 828 transitions. [2023-08-27 08:01:48,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44660194174757284 [2023-08-27 08:01:48,386 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 828 transitions. [2023-08-27 08:01:48,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 828 transitions. [2023-08-27 08:01:48,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:48,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 828 transitions. [2023-08-27 08:01:48,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,393 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 82 flow. Second operand 6 states and 828 transitions. [2023-08-27 08:01:48,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 178 flow [2023-08-27 08:01:48,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:01:48,395 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 140 flow [2023-08-27 08:01:48,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-08-27 08:01:48,397 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-27 08:01:48,397 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 140 flow [2023-08-27 08:01:48,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:48,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 08:01:48,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:48,603 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,SelfDestructingSolverStorable2 [2023-08-27 08:01:48,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:48,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:48,604 INFO L85 PathProgramCache]: Analyzing trace with hash 584684044, now seen corresponding path program 1 times [2023-08-27 08:01:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913201919] [2023-08-27 08:01:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:48,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:48,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913201919] [2023-08-27 08:01:48,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913201919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:48,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:01:48,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:01:48,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221034316] [2023-08-27 08:01:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:48,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:01:48,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:48,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:01:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:01:48,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 309 [2023-08-27 08:01:48,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:48,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 309 [2023-08-27 08:01:48,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:48,796 INFO L124 PetriNetUnfolderBase]: 545/770 cut-off events. [2023-08-27 08:01:48,796 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 08:01:48,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 770 events. 545/770 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2953 event pairs, 162 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 1577. Up to 657 conditions per place. [2023-08-27 08:01:48,801 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 43 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-27 08:01:48,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 258 flow [2023-08-27 08:01:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:01:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:01:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-27 08:01:48,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47680690399137 [2023-08-27 08:01:48,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-27 08:01:48,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-27 08:01:48,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:48,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-27 08:01:48,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,807 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 140 flow. Second operand 3 states and 442 transitions. [2023-08-27 08:01:48,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 258 flow [2023-08-27 08:01:48,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 237 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 08:01:48,813 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 140 flow [2023-08-27 08:01:48,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-27 08:01:48,815 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-27 08:01:48,815 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 140 flow [2023-08-27 08:01:48,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:48,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:48,817 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 08:01:48,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 08:01:48,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:48,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash 945246273, now seen corresponding path program 2 times [2023-08-27 08:01:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:48,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905308203] [2023-08-27 08:01:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:48,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905308203] [2023-08-27 08:01:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905308203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453866993] [2023-08-27 08:01:48,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:01:48,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:48,929 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) [2023-08-27 08:01:48,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 08:01:49,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 08:01:49,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:01:49,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:01:49,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 08:01:49,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:01:49,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453866993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:49,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:01:49,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 08:01:49,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79875141] [2023-08-27 08:01:49,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:49,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:01:49,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:49,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:01:49,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 08:01:49,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 309 [2023-08-27 08:01:49,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:49,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 309 [2023-08-27 08:01:49,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:49,107 INFO L124 PetriNetUnfolderBase]: 464/657 cut-off events. [2023-08-27 08:01:49,107 INFO L125 PetriNetUnfolderBase]: For 78/108 co-relation queries the response was YES. [2023-08-27 08:01:49,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 657 events. 464/657 cut-off events. For 78/108 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2459 event pairs, 270 based on Foata normal form. 31/367 useless extension candidates. Maximal degree in co-relation 1590. Up to 653 conditions per place. [2023-08-27 08:01:49,111 INFO L140 encePairwiseOnDemand]: 307/309 looper letters, 33 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-27 08:01:49,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 198 flow [2023-08-27 08:01:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:01:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:01:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-27 08:01:49,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738942826321466 [2023-08-27 08:01:49,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-27 08:01:49,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-27 08:01:49,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:49,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-27 08:01:49,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,118 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 140 flow. Second operand 3 states and 424 transitions. [2023-08-27 08:01:49,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 198 flow [2023-08-27 08:01:49,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 177 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 08:01:49,121 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 111 flow [2023-08-27 08:01:49,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-08-27 08:01:49,123 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-08-27 08:01:49,124 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 111 flow [2023-08-27 08:01:49,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:49,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 08:01:49,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:49,333 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 [2023-08-27 08:01:49,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:49,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash 945337294, now seen corresponding path program 1 times [2023-08-27 08:01:49,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:49,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138222348] [2023-08-27 08:01:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138222348] [2023-08-27 08:01:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138222348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:49,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:01:49,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:01:49,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323593936] [2023-08-27 08:01:49,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:49,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:01:49,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:49,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:01:49,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:01:49,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 309 [2023-08-27 08:01:49,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:49,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 309 [2023-08-27 08:01:49,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:49,546 INFO L124 PetriNetUnfolderBase]: 550/774 cut-off events. [2023-08-27 08:01:49,546 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-08-27 08:01:49,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 774 events. 550/774 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2926 event pairs, 328 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1777. Up to 772 conditions per place. [2023-08-27 08:01:49,550 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-27 08:01:49,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 175 flow [2023-08-27 08:01:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:01:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:01:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-27 08:01:49,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045307443365696 [2023-08-27 08:01:49,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-27 08:01:49,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-27 08:01:49,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:49,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-27 08:01:49,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,555 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 111 flow. Second operand 3 states and 375 transitions. [2023-08-27 08:01:49,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 175 flow [2023-08-27 08:01:49,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:01:49,557 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 110 flow [2023-08-27 08:01:49,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-08-27 08:01:49,559 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-27 08:01:49,560 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 110 flow [2023-08-27 08:01:49,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:49,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:01:49,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 08:01:49,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:49,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash -762044355, now seen corresponding path program 1 times [2023-08-27 08:01:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:49,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868597007] [2023-08-27 08:01:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:01:49,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:49,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868597007] [2023-08-27 08:01:49,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868597007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:49,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380956759] [2023-08-27 08:01:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:49,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:49,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:49,613 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) [2023-08-27 08:01:49,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 08:01:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:49,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:01:49,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:01:49,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:01:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380956759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:49,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:01:49,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 08:01:49,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868016396] [2023-08-27 08:01:49,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:49,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:01:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:01:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:01:49,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 309 [2023-08-27 08:01:49,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:49,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 309 [2023-08-27 08:01:49,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:49,834 INFO L124 PetriNetUnfolderBase]: 472/664 cut-off events. [2023-08-27 08:01:49,835 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-08-27 08:01:49,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 664 events. 472/664 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2524 event pairs, 67 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 1521. Up to 296 conditions per place. [2023-08-27 08:01:49,838 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 49 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-27 08:01:49,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 256 flow [2023-08-27 08:01:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:01:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:01:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-08-27 08:01:49,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716828478964401 [2023-08-27 08:01:49,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-08-27 08:01:49,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-08-27 08:01:49,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:49,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-08-27 08:01:49,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,844 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 110 flow. Second operand 4 states and 583 transitions. [2023-08-27 08:01:49,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 256 flow [2023-08-27 08:01:49,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:01:49,847 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 110 flow [2023-08-27 08:01:49,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-27 08:01:49,848 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-27 08:01:49,848 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 110 flow [2023-08-27 08:01:49,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:49,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:49,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:01:49,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:50,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:50,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash -762044334, now seen corresponding path program 1 times [2023-08-27 08:01:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:50,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242919045] [2023-08-27 08:01:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:01:50,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242919045] [2023-08-27 08:01:50,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242919045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:50,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131211488] [2023-08-27 08:01:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:50,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:50,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:50,100 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) [2023-08-27 08:01:50,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 08:01:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:50,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:01:50,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:01:50,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:01:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:01:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131211488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:01:50,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:01:50,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 08:01:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789766747] [2023-08-27 08:01:50,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:01:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:01:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:01:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:01:50,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 309 [2023-08-27 08:01:50,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:50,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 309 [2023-08-27 08:01:50,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:50,400 INFO L124 PetriNetUnfolderBase]: 801/1089 cut-off events. [2023-08-27 08:01:50,400 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2023-08-27 08:01:50,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1089 events. 801/1089 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4242 event pairs, 129 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 2798. Up to 640 conditions per place. [2023-08-27 08:01:50,407 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 70 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2023-08-27 08:01:50,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 80 transitions, 386 flow [2023-08-27 08:01:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:01:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:01:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 879 transitions. [2023-08-27 08:01:50,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4741100323624595 [2023-08-27 08:01:50,410 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 879 transitions. [2023-08-27 08:01:50,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 879 transitions. [2023-08-27 08:01:50,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:50,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 879 transitions. [2023-08-27 08:01:50,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,417 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 110 flow. Second operand 6 states and 879 transitions. [2023-08-27 08:01:50,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 80 transitions, 386 flow [2023-08-27 08:01:50,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 80 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:01:50,420 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 168 flow [2023-08-27 08:01:50,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-27 08:01:50,422 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-27 08:01:50,422 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 168 flow [2023-08-27 08:01:50,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:50,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:01:50,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:50,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:50,628 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:50,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2144209553, now seen corresponding path program 1 times [2023-08-27 08:01:50,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:50,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562005968] [2023-08-27 08:01:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:50,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:01:50,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562005968] [2023-08-27 08:01:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562005968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:50,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:01:50,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:01:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628831418] [2023-08-27 08:01:50,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:50,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:01:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:50,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:01:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:01:50,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 309 [2023-08-27 08:01:50,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:50,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 309 [2023-08-27 08:01:50,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:50,789 INFO L124 PetriNetUnfolderBase]: 759/1062 cut-off events. [2023-08-27 08:01:50,789 INFO L125 PetriNetUnfolderBase]: For 1603/1675 co-relation queries the response was YES. [2023-08-27 08:01:50,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 1062 events. 759/1062 cut-off events. For 1603/1675 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3753 event pairs, 389 based on Foata normal form. 72/948 useless extension candidates. Maximal degree in co-relation 3319. Up to 902 conditions per place. [2023-08-27 08:01:50,814 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 55 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-27 08:01:50,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 384 flow [2023-08-27 08:01:50,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:01:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:01:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-27 08:01:50,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47357065803667747 [2023-08-27 08:01:50,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-27 08:01:50,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-27 08:01:50,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:50,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-27 08:01:50,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,820 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 168 flow. Second operand 3 states and 439 transitions. [2023-08-27 08:01:50,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 384 flow [2023-08-27 08:01:50,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 343 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-27 08:01:50,824 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 168 flow [2023-08-27 08:01:50,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-27 08:01:50,825 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-27 08:01:50,825 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 168 flow [2023-08-27 08:01:50,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:50,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:50,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:01:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 08:01:50,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:50,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2045985021, now seen corresponding path program 1 times [2023-08-27 08:01:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757403377] [2023-08-27 08:01:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:01:50,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757403377] [2023-08-27 08:01:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757403377] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843541817] [2023-08-27 08:01:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:50,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:50,876 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) [2023-08-27 08:01:50,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 08:01:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:50,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 08:01:50,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:51,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:01:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:51,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843541817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:01:51,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:01:51,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-27 08:01:51,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113383079] [2023-08-27 08:01:51,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:01:51,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 08:01:51,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:51,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 08:01:51,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 08:01:51,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 309 [2023-08-27 08:01:51,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 168 flow. Second operand has 13 states, 13 states have (on average 117.84615384615384) internal successors, (1532), 13 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:51,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:51,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 309 [2023-08-27 08:01:51,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:51,427 INFO L124 PetriNetUnfolderBase]: 1395/1930 cut-off events. [2023-08-27 08:01:51,427 INFO L125 PetriNetUnfolderBase]: For 2622/2756 co-relation queries the response was YES. [2023-08-27 08:01:51,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 1930 events. 1395/1930 cut-off events. For 2622/2756 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7625 event pairs, 423 based on Foata normal form. 160/1772 useless extension candidates. Maximal degree in co-relation 6111. Up to 693 conditions per place. [2023-08-27 08:01:51,441 INFO L140 encePairwiseOnDemand]: 300/309 looper letters, 123 selfloop transitions, 14 changer transitions 0/138 dead transitions. [2023-08-27 08:01:51,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 138 transitions, 841 flow [2023-08-27 08:01:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 08:01:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 08:01:51,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1136 transitions. [2023-08-27 08:01:51,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084861560589716 [2023-08-27 08:01:51,444 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1136 transitions. [2023-08-27 08:01:51,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1136 transitions. [2023-08-27 08:01:51,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:51,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1136 transitions. [2023-08-27 08:01:51,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.22222222222223) internal successors, (1136), 9 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:51,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:51,452 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:51,452 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 168 flow. Second operand 9 states and 1136 transitions. [2023-08-27 08:01:51,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 138 transitions, 841 flow [2023-08-27 08:01:51,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 138 transitions, 831 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 08:01:51,462 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 257 flow [2023-08-27 08:01:51,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-27 08:01:51,463 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-08-27 08:01:51,463 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 257 flow [2023-08-27 08:01:51,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 117.84615384615384) internal successors, (1532), 13 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:51,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:51,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:01:51,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:51,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:51,670 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:51,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash 944555208, now seen corresponding path program 1 times [2023-08-27 08:01:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516074951] [2023-08-27 08:01:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 08:01:51,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:51,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516074951] [2023-08-27 08:01:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516074951] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:51,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422263485] [2023-08-27 08:01:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:51,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:51,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:51,725 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) [2023-08-27 08:01:51,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 08:01:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:51,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 08:01:51,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 08:01:51,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:01:51,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422263485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:51,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:01:51,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-27 08:01:51,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074363205] [2023-08-27 08:01:51,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:51,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:01:51,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:01:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:01:51,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 309 [2023-08-27 08:01:51,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:51,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:51,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 309 [2023-08-27 08:01:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:52,048 INFO L124 PetriNetUnfolderBase]: 1235/1724 cut-off events. [2023-08-27 08:01:52,048 INFO L125 PetriNetUnfolderBase]: For 3043/3139 co-relation queries the response was YES. [2023-08-27 08:01:52,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 1724 events. 1235/1724 cut-off events. For 3043/3139 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6800 event pairs, 260 based on Foata normal form. 188/1862 useless extension candidates. Maximal degree in co-relation 6251. Up to 753 conditions per place. [2023-08-27 08:01:52,062 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 87 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2023-08-27 08:01:52,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 681 flow [2023-08-27 08:01:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:01:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:01:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 726 transitions. [2023-08-27 08:01:52,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46990291262135925 [2023-08-27 08:01:52,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 726 transitions. [2023-08-27 08:01:52,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 726 transitions. [2023-08-27 08:01:52,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:52,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 726 transitions. [2023-08-27 08:01:52,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,069 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 257 flow. Second operand 5 states and 726 transitions. [2023-08-27 08:01:52,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 681 flow [2023-08-27 08:01:52,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 658 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 08:01:52,084 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 238 flow [2023-08-27 08:01:52,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-08-27 08:01:52,084 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-08-27 08:01:52,084 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 238 flow [2023-08-27 08:01:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:52,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:01:52,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:52,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:52,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:52,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash 944555230, now seen corresponding path program 2 times [2023-08-27 08:01:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:52,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475623785] [2023-08-27 08:01:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:52,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 08:01:52,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:52,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475623785] [2023-08-27 08:01:52,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475623785] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:52,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749480565] [2023-08-27 08:01:52,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:01:52,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:52,346 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:01:52,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 08:01:52,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 08:01:52,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:01:52,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:01:52,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 08:01:52,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:01:52,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749480565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:01:52,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:01:52,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 08:01:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471746325] [2023-08-27 08:01:52,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:52,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:01:52,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:01:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:01:52,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-08-27 08:01:52,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:52,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-08-27 08:01:52,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:52,578 INFO L124 PetriNetUnfolderBase]: 843/1174 cut-off events. [2023-08-27 08:01:52,578 INFO L125 PetriNetUnfolderBase]: For 3414/3561 co-relation queries the response was YES. [2023-08-27 08:01:52,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4260 conditions, 1174 events. 843/1174 cut-off events. For 3414/3561 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4284 event pairs, 450 based on Foata normal form. 173/1335 useless extension candidates. Maximal degree in co-relation 4241. Up to 1166 conditions per place. [2023-08-27 08:01:52,587 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 41 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-27 08:01:52,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 298 flow [2023-08-27 08:01:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:01:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:01:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-27 08:01:52,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45091693635382957 [2023-08-27 08:01:52,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-27 08:01:52,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-27 08:01:52,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:52,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-27 08:01:52,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,592 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 238 flow. Second operand 3 states and 418 transitions. [2023-08-27 08:01:52,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 298 flow [2023-08-27 08:01:52,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 253 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-08-27 08:01:52,600 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 171 flow [2023-08-27 08:01:52,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-27 08:01:52,601 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-27 08:01:52,601 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 171 flow [2023-08-27 08:01:52,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:52,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:52,602 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] [2023-08-27 08:01:52,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:52,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-27 08:01:52,808 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:52,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2099623458, now seen corresponding path program 1 times [2023-08-27 08:01:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:52,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036299833] [2023-08-27 08:01:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:52,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036299833] [2023-08-27 08:01:52,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036299833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502673547] [2023-08-27 08:01:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:52,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:52,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:52,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:01:52,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 08:01:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:53,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:01:53,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:53,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:01:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502673547] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:53,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 08:01:53,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-27 08:01:53,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713474138] [2023-08-27 08:01:53,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:53,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:01:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:53,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:01:53,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 08:01:53,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 309 [2023-08-27 08:01:53,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:53,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 309 [2023-08-27 08:01:53,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:53,246 INFO L124 PetriNetUnfolderBase]: 897/1270 cut-off events. [2023-08-27 08:01:53,247 INFO L125 PetriNetUnfolderBase]: For 1384/1466 co-relation queries the response was YES. [2023-08-27 08:01:53,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3683 conditions, 1270 events. 897/1270 cut-off events. For 1384/1466 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4761 event pairs, 450 based on Foata normal form. 128/1390 useless extension candidates. Maximal degree in co-relation 3669. Up to 1119 conditions per place. [2023-08-27 08:01:53,260 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 53 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-08-27 08:01:53,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 340 flow [2023-08-27 08:01:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:01:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:01:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 612 transitions. [2023-08-27 08:01:53,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39611650485436894 [2023-08-27 08:01:53,263 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 612 transitions. [2023-08-27 08:01:53,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 612 transitions. [2023-08-27 08:01:53,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:53,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 612 transitions. [2023-08-27 08:01:53,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,267 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 171 flow. Second operand 5 states and 612 transitions. [2023-08-27 08:01:53,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 340 flow [2023-08-27 08:01:53,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:01:53,272 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 174 flow [2023-08-27 08:01:53,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-27 08:01:53,273 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-08-27 08:01:53,273 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 174 flow [2023-08-27 08:01:53,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:53,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:01:53,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 08:01:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 08:01:53,480 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:53,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1769192547, now seen corresponding path program 1 times [2023-08-27 08:01:53,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:53,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701680512] [2023-08-27 08:01:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:53,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701680512] [2023-08-27 08:01:53,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701680512] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:53,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131734050] [2023-08-27 08:01:53,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:53,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:53,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:53,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:01:53,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 08:01:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:53,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:01:53,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:53,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:01:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:53,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131734050] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:53,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 08:01:53,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-27 08:01:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477770520] [2023-08-27 08:01:53,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:01:53,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:01:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:53,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:01:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 08:01:53,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 309 [2023-08-27 08:01:53,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:53,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 309 [2023-08-27 08:01:53,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:53,940 INFO L124 PetriNetUnfolderBase]: 909/1314 cut-off events. [2023-08-27 08:01:53,941 INFO L125 PetriNetUnfolderBase]: For 1215/1271 co-relation queries the response was YES. [2023-08-27 08:01:53,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 1314 events. 909/1314 cut-off events. For 1215/1271 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4920 event pairs, 450 based on Foata normal form. 136/1450 useless extension candidates. Maximal degree in co-relation 3671. Up to 1039 conditions per place. [2023-08-27 08:01:53,947 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 50 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-27 08:01:53,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 325 flow [2023-08-27 08:01:53,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:01:53,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:01:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 612 transitions. [2023-08-27 08:01:53,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39611650485436894 [2023-08-27 08:01:53,949 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 612 transitions. [2023-08-27 08:01:53,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 612 transitions. [2023-08-27 08:01:53,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:53,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 612 transitions. [2023-08-27 08:01:53,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,953 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,954 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 174 flow. Second operand 5 states and 612 transitions. [2023-08-27 08:01:53,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 325 flow [2023-08-27 08:01:53,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 315 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 08:01:53,958 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 168 flow [2023-08-27 08:01:53,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-27 08:01:53,959 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-08-27 08:01:53,959 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 168 flow [2023-08-27 08:01:53,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:53,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:01:53,959 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] [2023-08-27 08:01:53,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:54,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 08:01:54,165 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 08:01:54,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:01:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash -415495243, now seen corresponding path program 1 times [2023-08-27 08:01:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:01:54,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919177609] [2023-08-27 08:01:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:01:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:55,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:01:55,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919177609] [2023-08-27 08:01:55,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919177609] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:01:55,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461940324] [2023-08-27 08:01:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:01:55,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:01:55,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:01:55,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:01:55,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 08:01:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:01:55,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 08:01:55,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:01:55,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 08:01:55,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 08:01:55,231 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 21 treesize of output 21 [2023-08-27 08:01:55,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 08:01:55,301 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 21 treesize of output 21 [2023-08-27 08:01:55,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-27 08:01:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:01:55,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:01:55,551 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_524 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_524) c_~A~0.base) c_~A~0.offset))) (or (<= .cse0 c_~max~0) (<= c_~min~0 .cse0)))) (or (forall ((v_ArrVal_524 (Array Int Int))) (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_524) c_~A~0.base) c_~A~0.offset))) (<= c_~min~0 c_~max~0))) is different from false [2023-08-27 08:01:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:01:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461940324] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:01:55,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:01:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 24 [2023-08-27 08:01:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968765389] [2023-08-27 08:01:55,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:01:55,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 08:01:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:01:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 08:01:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=419, Unknown=2, NotChecked=44, Total=600 [2023-08-27 08:01:55,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 309 [2023-08-27 08:01:55,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 168 flow. Second operand has 25 states, 25 states have (on average 90.48) internal successors, (2262), 25 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:55,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:01:55,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 309 [2023-08-27 08:01:55,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:01:56,693 INFO L124 PetriNetUnfolderBase]: 1272/1875 cut-off events. [2023-08-27 08:01:56,694 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2023-08-27 08:01:56,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5442 conditions, 1875 events. 1272/1875 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7652 event pairs, 42 based on Foata normal form. 3/1878 useless extension candidates. Maximal degree in co-relation 5427. Up to 729 conditions per place. [2023-08-27 08:01:56,699 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 0 selfloop transitions, 0 changer transitions 151/151 dead transitions. [2023-08-27 08:01:56,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 151 transitions, 926 flow [2023-08-27 08:01:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 08:01:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 08:01:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1238 transitions. [2023-08-27 08:01:56,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3081901916853373 [2023-08-27 08:01:56,704 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1238 transitions. [2023-08-27 08:01:56,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1238 transitions. [2023-08-27 08:01:56,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:01:56,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1238 transitions. [2023-08-27 08:01:56,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 95.23076923076923) internal successors, (1238), 13 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:56,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 309.0) internal successors, (4326), 14 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:56,712 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 309.0) internal successors, (4326), 14 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:56,712 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 168 flow. Second operand 13 states and 1238 transitions. [2023-08-27 08:01:56,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 151 transitions, 926 flow [2023-08-27 08:01:56,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 151 transitions, 866 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 08:01:56,719 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-27 08:01:56,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-27 08:01:56,719 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-08-27 08:01:56,720 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-27 08:01:56,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 90.48) internal successors, (2262), 25 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:01:56,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-27 08:01:56,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-27 08:01:56,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-27 08:01:56,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-27 08:01:56,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-27 08:01:56,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-27 08:01:56,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (7 of 14 remaining) [2023-08-27 08:01:56,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2023-08-27 08:01:56,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-08-27 08:01:56,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-08-27 08:01:56,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-27 08:01:56,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-27 08:01:56,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-27 08:01:56,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-27 08:01:56,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 08:01:56,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 08:01:56,930 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:01:56,935 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 08:01:56,935 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 08:01:56,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 08:01:56 BasicIcfg [2023-08-27 08:01:56,937 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 08:01:56,938 INFO L158 Benchmark]: Toolchain (without parser) took 16239.01ms. Allocated memory was 362.8MB in the beginning and 524.3MB in the end (delta: 161.5MB). Free memory was 339.3MB in the beginning and 290.8MB in the end (delta: 48.5MB). Peak memory consumption was 212.1MB. Max. memory is 16.0GB. [2023-08-27 08:01:56,938 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 362.8MB. Free memory was 340.8MB in the beginning and 340.7MB in the end (delta: 86.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 08:01:56,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.62ms. Allocated memory is still 362.8MB. Free memory was 339.3MB in the beginning and 327.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 08:01:56,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.83ms. Allocated memory is still 362.8MB. Free memory was 327.8MB in the beginning and 326.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:01:56,939 INFO L158 Benchmark]: Boogie Preprocessor took 33.61ms. Allocated memory is still 362.8MB. Free memory was 326.2MB in the beginning and 324.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:01:56,939 INFO L158 Benchmark]: RCFGBuilder took 566.38ms. Allocated memory is still 362.8MB. Free memory was 324.6MB in the beginning and 303.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 08:01:56,939 INFO L158 Benchmark]: TraceAbstraction took 15312.97ms. Allocated memory was 362.8MB in the beginning and 524.3MB in the end (delta: 161.5MB). Free memory was 303.2MB in the beginning and 290.8MB in the end (delta: 12.4MB). Peak memory consumption was 176.4MB. Max. memory is 16.0GB. [2023-08-27 08:01:56,940 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 362.8MB. Free memory was 340.8MB in the beginning and 340.7MB in the end (delta: 86.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 268.62ms. Allocated memory is still 362.8MB. Free memory was 339.3MB in the beginning and 327.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.83ms. Allocated memory is still 362.8MB. Free memory was 327.8MB in the beginning and 326.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.61ms. Allocated memory is still 362.8MB. Free memory was 326.2MB in the beginning and 324.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 566.38ms. Allocated memory is still 362.8MB. Free memory was 324.6MB in the beginning and 303.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 15312.97ms. Allocated memory was 362.8MB in the beginning and 524.3MB in the end (delta: 161.5MB). Free memory was 303.2MB in the beginning and 290.8MB in the end (delta: 12.4MB). Peak memory consumption was 176.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 142 PlacesBefore, 35 PlacesAfterwards, 142 TransitionsBefore, 28 TransitionsAfterwards, 1494 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 153 TotalNumberOfCompositions, 2078 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1711, independent: 1680, independent conditional: 0, independent unconditional: 1680, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 843, independent: 827, independent conditional: 0, independent unconditional: 827, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1711, independent: 853, independent conditional: 0, independent unconditional: 853, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 843, unknown conditional: 0, unknown unconditional: 843] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 182 locations, 14 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: 15.2s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 519 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 519 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 82 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1521 IncrementalHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 15 mSDtfsCounter, 1521 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 261 GetRequests, 151 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=10, InterpolantAutomatonStates: 75, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 261 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 311 ConstructedInterpolants, 4 QuantifiedInterpolants, 1596 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1787 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 32 InterpolantComputations, 11 PerfectInterpolantSequences, 48/85 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 08:01:56,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...