/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:38:37,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:38:38,039 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 11:38:38,046 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:38:38,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:38:38,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:38:38,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:38:38,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:38:38,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:38:38,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:38:38,086 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:38:38,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:38:38,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:38:38,087 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:38:38,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:38:38,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:38:38,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:38:38,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:38:38,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:38:38,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:38:38,089 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:38:38,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:38:38,090 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:38:38,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:38:38,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:38:38,091 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:38:38,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:38:38,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:38:38,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:38:38,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:38:38,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:38:38,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:38:38,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:38:38,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:38:38,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:38:38,093 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:38:38,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:38:38,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:38:38,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:38:38,387 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:38:38,387 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:38:38,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-27 11:38:39,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:38:39,830 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:38:39,831 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-27 11:38:39,844 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71831c411/d74726653f474ff2858647e07a93abf7/FLAG10730d8be [2023-08-27 11:38:39,855 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71831c411/d74726653f474ff2858647e07a93abf7 [2023-08-27 11:38:39,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:38:39,858 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:38:39,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:38:39,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:38:39,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:38:39,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:38:39" (1/1) ... [2023-08-27 11:38:39,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f890c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:39, skipping insertion in model container [2023-08-27 11:38:39,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:38:39" (1/1) ... [2023-08-27 11:38:39,895 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:38:40,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:38:40,213 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:38:40,238 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:38:40,240 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:38:40,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:38:40,312 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:38:40,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40 WrapperNode [2023-08-27 11:38:40,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:38:40,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:38:40,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:38:40,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:38:40,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,368 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2023-08-27 11:38:40,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:38:40,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:38:40,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:38:40,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:38:40,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:38:40,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:38:40,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:38:40,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:38:40,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (1/1) ... [2023-08-27 11:38:40,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:38:40,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:40,440 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 11:38:40,448 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 11:38:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:38:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:38:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:38:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:38:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:38:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:38:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:38:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:38:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:38:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:38:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:38:40,479 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 11:38:40,595 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:38:40,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:38:40,757 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:38:40,765 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:38:40,766 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-27 11:38:40,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:38:40 BoogieIcfgContainer [2023-08-27 11:38:40,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:38:40,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:38:40,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:38:40,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:38:40,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:38:39" (1/3) ... [2023-08-27 11:38:40,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa891bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:38:40, skipping insertion in model container [2023-08-27 11:38:40,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:40" (2/3) ... [2023-08-27 11:38:40,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa891bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:38:40, skipping insertion in model container [2023-08-27 11:38:40,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:38:40" (3/3) ... [2023-08-27 11:38:40,774 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-08-27 11:38:40,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:38:40,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 11:38:40,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:38:40,837 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:38:40,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 130 transitions, 268 flow [2023-08-27 11:38:40,946 INFO L124 PetriNetUnfolderBase]: 19/168 cut-off events. [2023-08-27 11:38:40,946 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:38:40,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 168 events. 19/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 426 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-08-27 11:38:40,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 130 transitions, 268 flow [2023-08-27 11:38:40,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 127 transitions, 262 flow [2023-08-27 11:38:40,965 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:38:40,976 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 127 transitions, 262 flow [2023-08-27 11:38:40,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 127 transitions, 262 flow [2023-08-27 11:38:40,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2023-08-27 11:38:41,010 INFO L124 PetriNetUnfolderBase]: 18/165 cut-off events. [2023-08-27 11:38:41,011 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:38:41,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 165 events. 18/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 424 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-08-27 11:38:41,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-27 11:38:44,080 INFO L134 LiptonReduction]: Checked pairs total: 6751 [2023-08-27 11:38:44,081 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-27 11:38:44,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:38:44,097 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;@147321b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:38:44,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 11:38:44,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:38:44,100 INFO L124 PetriNetUnfolderBase]: 3/10 cut-off events. [2023-08-27 11:38:44,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:44,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:44,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:38:44,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:38:44,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash 15571059, now seen corresponding path program 1 times [2023-08-27 11:38:44,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:44,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033924714] [2023-08-27 11:38:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:44,351 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 11:38:44,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:44,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033924714] [2023-08-27 11:38:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033924714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:44,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:44,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:38:44,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493989334] [2023-08-27 11:38:44,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:44,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:44,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:44,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:44,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:44,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 249 [2023-08-27 11:38:44,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 11:38:44,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:44,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 249 [2023-08-27 11:38:44,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:44,483 INFO L124 PetriNetUnfolderBase]: 126/284 cut-off events. [2023-08-27 11:38:44,484 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:38:44,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 284 events. 126/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1059 event pairs, 104 based on Foata normal form. 10/208 useless extension candidates. Maximal degree in co-relation 551. Up to 265 conditions per place. [2023-08-27 11:38:44,486 INFO L140 encePairwiseOnDemand]: 235/249 looper letters, 41 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-27 11:38:44,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 184 flow [2023-08-27 11:38:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-27 11:38:44,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113788487282463 [2023-08-27 11:38:44,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-27 11:38:44,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-27 11:38:44,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:44,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-27 11:38:44,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 11:38:44,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 11:38:44,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 11:38:44,510 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 90 flow. Second operand 3 states and 382 transitions. [2023-08-27 11:38:44,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 184 flow [2023-08-27 11:38:44,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:38:44,514 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 76 flow [2023-08-27 11:38:44,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-27 11:38:44,518 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 11:38:44,518 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 76 flow [2023-08-27 11:38:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 11:38:44,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:44,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:44,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:38:44,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:38:44,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash 21181849, now seen corresponding path program 1 times [2023-08-27 11:38:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698612563] [2023-08-27 11:38:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:44,772 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 11:38:44,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:44,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698612563] [2023-08-27 11:38:44,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698612563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:44,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:44,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:38:44,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920359411] [2023-08-27 11:38:44,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:44,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:44,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:44,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:38:44,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 249 [2023-08-27 11:38:44,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 11:38:44,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:44,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 249 [2023-08-27 11:38:44,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:44,868 INFO L124 PetriNetUnfolderBase]: 108/247 cut-off events. [2023-08-27 11:38:44,868 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 11:38:44,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 247 events. 108/247 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 885 event pairs, 32 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 514. Up to 175 conditions per place. [2023-08-27 11:38:44,870 INFO L140 encePairwiseOnDemand]: 244/249 looper letters, 35 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-27 11:38:44,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 181 flow [2023-08-27 11:38:44,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2023-08-27 11:38:44,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006024096385542 [2023-08-27 11:38:44,876 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 399 transitions. [2023-08-27 11:38:44,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 399 transitions. [2023-08-27 11:38:44,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:44,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 399 transitions. [2023-08-27 11:38:44,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 11:38:44,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 11:38:44,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 11:38:44,881 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 76 flow. Second operand 4 states and 399 transitions. [2023-08-27 11:38:44,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 181 flow [2023-08-27 11:38:44,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:44,883 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 85 flow [2023-08-27 11:38:44,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-27 11:38:44,884 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 11:38:44,884 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 85 flow [2023-08-27 11:38:44,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 11:38:44,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:44,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:44,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:38:44,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:38:44,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash 22228028, now seen corresponding path program 1 times [2023-08-27 11:38:44,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:44,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869738585] [2023-08-27 11:38:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:44,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:44,952 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 11:38:44,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:44,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869738585] [2023-08-27 11:38:44,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869738585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:44,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855508637] [2023-08-27 11:38:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:44,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:44,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:44,961 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 11:38:44,972 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 11:38:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:45,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:38:45,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:45,082 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 11:38:45,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:38:45,100 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 11:38:45,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855508637] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:38:45,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:38:45,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:38:45,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452403131] [2023-08-27 11:38:45,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:38:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:38:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:38:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:38:45,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 249 [2023-08-27 11:38:45,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 85 flow. Second operand has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 11:38:45,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:45,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 249 [2023-08-27 11:38:45,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:45,160 INFO L124 PetriNetUnfolderBase]: 24/79 cut-off events. [2023-08-27 11:38:45,161 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:38:45,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 79 events. 24/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 233 event pairs, 0 based on Foata normal form. 13/86 useless extension candidates. Maximal degree in co-relation 144. Up to 50 conditions per place. [2023-08-27 11:38:45,164 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 19 selfloop transitions, 2 changer transitions 8/31 dead transitions. [2023-08-27 11:38:45,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 136 flow [2023-08-27 11:38:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2023-08-27 11:38:45,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598393574297189 [2023-08-27 11:38:45,166 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 458 transitions. [2023-08-27 11:38:45,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 458 transitions. [2023-08-27 11:38:45,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:45,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 458 transitions. [2023-08-27 11:38:45,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 11:38:45,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 11:38:45,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 11:38:45,171 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 85 flow. Second operand 4 states and 458 transitions. [2023-08-27 11:38:45,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 136 flow [2023-08-27 11:38:45,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 125 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:38:45,173 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 37 flow [2023-08-27 11:38:45,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-08-27 11:38:45,174 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -11 predicate places. [2023-08-27 11:38:45,174 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 37 flow [2023-08-27 11:38:45,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 11:38:45,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:45,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:45,186 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 11:38:45,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:45,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:38:45,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1681607034, now seen corresponding path program 1 times [2023-08-27 11:38:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:45,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950139159] [2023-08-27 11:38:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:45,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:45,466 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 11:38:45,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:45,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950139159] [2023-08-27 11:38:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950139159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:45,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:45,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:38:45,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812158338] [2023-08-27 11:38:45,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:45,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:45,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:38:45,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 249 [2023-08-27 11:38:45,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 11:38:45,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:45,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 249 [2023-08-27 11:38:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:45,507 INFO L124 PetriNetUnfolderBase]: 13/54 cut-off events. [2023-08-27 11:38:45,508 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 11:38:45,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 54 events. 13/54 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 4 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 93. Up to 22 conditions per place. [2023-08-27 11:38:45,508 INFO L140 encePairwiseOnDemand]: 243/249 looper letters, 13 selfloop transitions, 7 changer transitions 0/22 dead transitions. [2023-08-27 11:38:45,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 97 flow [2023-08-27 11:38:45,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:38:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:38:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2023-08-27 11:38:45,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36626506024096384 [2023-08-27 11:38:45,510 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2023-08-27 11:38:45,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2023-08-27 11:38:45,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:45,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2023-08-27 11:38:45,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:38:45,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:45,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:45,515 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 37 flow. Second operand 5 states and 456 transitions. [2023-08-27 11:38:45,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 97 flow [2023-08-27 11:38:45,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:45,516 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 71 flow [2023-08-27 11:38:45,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=71, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-08-27 11:38:45,517 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -11 predicate places. [2023-08-27 11:38:45,517 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 71 flow [2023-08-27 11:38:45,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 11:38:45,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:45,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:45,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:38:45,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:38:45,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:45,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1681607058, now seen corresponding path program 1 times [2023-08-27 11:38:45,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:45,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584829665] [2023-08-27 11:38:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:45,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:45,700 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 11:38:45,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:45,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584829665] [2023-08-27 11:38:45,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584829665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:45,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:45,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:38:45,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553660840] [2023-08-27 11:38:45,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:45,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:38:45,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:45,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:38:45,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:38:45,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 249 [2023-08-27 11:38:45,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 11:38:45,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:45,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 249 [2023-08-27 11:38:45,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:45,780 INFO L124 PetriNetUnfolderBase]: 11/48 cut-off events. [2023-08-27 11:38:45,781 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-27 11:38:45,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 48 events. 11/48 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 4 based on Foata normal form. 3/50 useless extension candidates. Maximal degree in co-relation 105. Up to 15 conditions per place. [2023-08-27 11:38:45,781 INFO L140 encePairwiseOnDemand]: 243/249 looper letters, 12 selfloop transitions, 5 changer transitions 3/22 dead transitions. [2023-08-27 11:38:45,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 123 flow [2023-08-27 11:38:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:38:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:38:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2023-08-27 11:38:45,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485943775100402 [2023-08-27 11:38:45,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2023-08-27 11:38:45,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2023-08-27 11:38:45,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:45,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2023-08-27 11:38:45,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 11:38:45,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:45,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:45,787 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 71 flow. Second operand 5 states and 434 transitions. [2023-08-27 11:38:45,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 123 flow [2023-08-27 11:38:45,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:45,788 INFO L231 Difference]: Finished difference. Result has 27 places, 15 transitions, 68 flow [2023-08-27 11:38:45,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=15} [2023-08-27 11:38:45,789 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-27 11:38:45,789 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 15 transitions, 68 flow [2023-08-27 11:38:45,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 11:38:45,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:45,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:45,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:38:45,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:38:45,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash 265194225, now seen corresponding path program 1 times [2023-08-27 11:38:45,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:45,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351872506] [2023-08-27 11:38:45,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:45,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:46,179 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 11:38:46,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:46,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351872506] [2023-08-27 11:38:46,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351872506] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:46,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375193367] [2023-08-27 11:38:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:46,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:46,185 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 11:38:46,208 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 11:38:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:46,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:38:46,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:46,303 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:38:46,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:38:46,368 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 11:38:46,403 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 14 treesize of output 16 [2023-08-27 11:38:46,416 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 11:38:46,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:38:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375193367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:46,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:38:46,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-27 11:38:46,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186309854] [2023-08-27 11:38:46,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:46,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:38:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:38:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-27 11:38:46,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 249 [2023-08-27 11:38:46,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 15 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 11:38:46,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:46,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 249 [2023-08-27 11:38:46,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:46,452 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2023-08-27 11:38:46,452 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 11:38:46,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 31 events. 8/31 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 7 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 77. Up to 25 conditions per place. [2023-08-27 11:38:46,453 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-27 11:38:46,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 90 flow [2023-08-27 11:38:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2023-08-27 11:38:46,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463855421686747 [2023-08-27 11:38:46,455 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2023-08-27 11:38:46,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2023-08-27 11:38:46,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:46,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2023-08-27 11:38:46,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 11:38:46,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 11:38:46,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 11:38:46,458 INFO L175 Difference]: Start difference. First operand has 27 places, 15 transitions, 68 flow. Second operand 4 states and 345 transitions. [2023-08-27 11:38:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 90 flow [2023-08-27 11:38:46,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 79 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:38:46,460 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 56 flow [2023-08-27 11:38:46,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-08-27 11:38:46,462 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -11 predicate places. [2023-08-27 11:38:46,462 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 56 flow [2023-08-27 11:38:46,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 11:38:46,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:46,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:46,470 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 11:38:46,668 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,SelfDestructingSolverStorable5 [2023-08-27 11:38:46,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:38:46,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash 265239771, now seen corresponding path program 1 times [2023-08-27 11:38:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:46,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275902998] [2023-08-27 11:38:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:46,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:46,847 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 11:38:46,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275902998] [2023-08-27 11:38:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275902998] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:46,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117567909] [2023-08-27 11:38:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:46,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:46,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:46,849 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 11:38:46,851 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 11:38:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:46,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 11:38:46,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:46,946 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:38:46,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:38:46,971 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 14 treesize of output 16 [2023-08-27 11:38:47,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:38:47,091 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 14 treesize of output 16 [2023-08-27 11:38:47,113 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 11:38:47,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:38:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117567909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:47,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:38:47,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:38:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58525925] [2023-08-27 11:38:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:38:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:38:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:38:47,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 249 [2023-08-27 11:38:47,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 56 flow. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 11:38:47,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:47,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 249 [2023-08-27 11:38:47,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:47,144 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2023-08-27 11:38:47,145 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:38:47,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 30 events. 8/30 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 4 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 70. Up to 14 conditions per place. [2023-08-27 11:38:47,145 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-08-27 11:38:47,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 15 transitions, 84 flow [2023-08-27 11:38:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:38:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:38:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2023-08-27 11:38:47,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.344578313253012 [2023-08-27 11:38:47,147 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2023-08-27 11:38:47,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2023-08-27 11:38:47,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:47,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2023-08-27 11:38:47,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 11:38:47,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:47,150 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:47,150 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 56 flow. Second operand 5 states and 429 transitions. [2023-08-27 11:38:47,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 15 transitions, 84 flow [2023-08-27 11:38:47,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 15 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:38:47,152 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-08-27 11:38:47,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-08-27 11:38:47,153 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -12 predicate places. [2023-08-27 11:38:47,153 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-08-27 11:38:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 11:38:47,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-27 11:38:47,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 11:38:47,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 11:38:47,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 11:38:47,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 11:38:47,165 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 11:38:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:47,363 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:47,365 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:38:47,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 130 transitions, 268 flow [2023-08-27 11:38:47,383 INFO L124 PetriNetUnfolderBase]: 19/168 cut-off events. [2023-08-27 11:38:47,383 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:38:47,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 168 events. 19/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 426 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-08-27 11:38:47,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 130 transitions, 268 flow [2023-08-27 11:38:47,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 121 transitions, 247 flow [2023-08-27 11:38:47,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:38:47,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 121 transitions, 247 flow [2023-08-27 11:38:47,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 121 transitions, 247 flow [2023-08-27 11:38:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 121 transitions, 247 flow [2023-08-27 11:38:47,400 INFO L124 PetriNetUnfolderBase]: 18/159 cut-off events. [2023-08-27 11:38:47,400 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:47,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 159 events. 18/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-08-27 11:38:47,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-27 11:38:50,117 INFO L134 LiptonReduction]: Checked pairs total: 6522 [2023-08-27 11:38:50,117 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-27 11:38:50,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:38:50,119 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;@147321b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:38:50,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:38:50,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:38:50,121 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-08-27 11:38:50,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:50,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:50,121 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:38:50,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:38:50,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1093042484, now seen corresponding path program 1 times [2023-08-27 11:38:50,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:50,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797314401] [2023-08-27 11:38:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:50,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:38:50,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:38:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:38:50,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:38:50,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:38:50,163 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:38:50,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:38:50,164 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:38:50,164 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:38:50,165 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:38:50,165 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:38:50,191 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:38:50,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 172 transitions, 362 flow [2023-08-27 11:38:50,226 INFO L124 PetriNetUnfolderBase]: 34/285 cut-off events. [2023-08-27 11:38:50,226 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:38:50,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 34/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 914 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 170. Up to 8 conditions per place. [2023-08-27 11:38:50,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 172 transitions, 362 flow [2023-08-27 11:38:50,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 172 transitions, 362 flow [2023-08-27 11:38:50,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:38:50,230 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 172 transitions, 362 flow [2023-08-27 11:38:50,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 172 transitions, 362 flow [2023-08-27 11:38:50,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 172 transitions, 362 flow [2023-08-27 11:38:50,256 INFO L124 PetriNetUnfolderBase]: 34/285 cut-off events. [2023-08-27 11:38:50,256 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:38:50,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 34/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 914 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 170. Up to 8 conditions per place. [2023-08-27 11:38:50,265 INFO L119 LiptonReduction]: Number of co-enabled transitions 12400 [2023-08-27 11:38:53,498 INFO L134 LiptonReduction]: Checked pairs total: 24917 [2023-08-27 11:38:53,499 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-27 11:38:53,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:38:53,500 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;@147321b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:38:53,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-27 11:38:53,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:38:53,502 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-27 11:38:53,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:53,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:53,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:38:53,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:53,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash 30184436, now seen corresponding path program 1 times [2023-08-27 11:38:53,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:53,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106328901] [2023-08-27 11:38:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:53,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:53,528 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 11:38:53,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:53,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106328901] [2023-08-27 11:38:53,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106328901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:53,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:53,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:38:53,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845917935] [2023-08-27 11:38:53,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:53,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:53,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:53,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:53,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:53,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 321 [2023-08-27 11:38:53,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 11:38:53,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:53,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 321 [2023-08-27 11:38:53,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:54,067 INFO L124 PetriNetUnfolderBase]: 4435/7415 cut-off events. [2023-08-27 11:38:54,068 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-27 11:38:54,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14582 conditions, 7415 events. 4435/7415 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 49384 event pairs, 2080 based on Foata normal form. 710/5595 useless extension candidates. Maximal degree in co-relation 1679. Up to 7046 conditions per place. [2023-08-27 11:38:54,112 INFO L140 encePairwiseOnDemand]: 302/321 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-27 11:38:54,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2023-08-27 11:38:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-27 11:38:54,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254413291796469 [2023-08-27 11:38:54,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-27 11:38:54,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-27 11:38:54,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:54,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-27 11:38:54,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 11:38:54,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 11:38:54,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 11:38:54,118 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 506 transitions. [2023-08-27 11:38:54,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2023-08-27 11:38:54,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:38:54,122 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2023-08-27 11:38:54,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-27 11:38:54,123 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-27 11:38:54,123 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2023-08-27 11:38:54,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 11:38:54,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:54,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:38:54,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:54,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1676562478, now seen corresponding path program 1 times [2023-08-27 11:38:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739547392] [2023-08-27 11:38:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:54,222 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 11:38:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:54,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739547392] [2023-08-27 11:38:54,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739547392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:54,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:54,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:38:54,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987698034] [2023-08-27 11:38:54,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:54,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:54,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:38:54,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 321 [2023-08-27 11:38:54,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:38:54,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:54,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 321 [2023-08-27 11:38:54,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:54,693 INFO L124 PetriNetUnfolderBase]: 3967/6615 cut-off events. [2023-08-27 11:38:54,693 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2023-08-27 11:38:54,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13787 conditions, 6615 events. 3967/6615 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42924 event pairs, 1492 based on Foata normal form. 0/4681 useless extension candidates. Maximal degree in co-relation 13699. Up to 5815 conditions per place. [2023-08-27 11:38:54,733 INFO L140 encePairwiseOnDemand]: 313/321 looper letters, 69 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-08-27 11:38:54,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 362 flow [2023-08-27 11:38:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-08-27 11:38:54,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338006230529595 [2023-08-27 11:38:54,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-08-27 11:38:54,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-08-27 11:38:54,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:54,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-08-27 11:38:54,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 11:38:54,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:38:54,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:38:54,741 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 4 states and 557 transitions. [2023-08-27 11:38:54,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 362 flow [2023-08-27 11:38:54,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:38:54,743 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 187 flow [2023-08-27 11:38:54,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-27 11:38:54,745 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-08-27 11:38:54,745 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 187 flow [2023-08-27 11:38:54,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:38:54,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:54,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:54,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:38:54,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:54,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash -614937513, now seen corresponding path program 1 times [2023-08-27 11:38:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:54,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744172241] [2023-08-27 11:38:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:54,773 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 11:38:54,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:54,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744172241] [2023-08-27 11:38:54,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744172241] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:54,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045656739] [2023-08-27 11:38:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:54,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:54,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:54,775 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 11:38:54,777 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 11:38:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:54,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:38:54,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:54,853 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 11:38:54,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:38:54,868 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 11:38:54,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045656739] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:38:54,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:38:54,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:38:54,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146351260] [2023-08-27 11:38:54,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:38:54,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:38:54,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:54,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:38:54,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:38:54,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 321 [2023-08-27 11:38:54,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 187 flow. Second operand has 7 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 11:38:54,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:54,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 321 [2023-08-27 11:38:54,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:55,111 INFO L124 PetriNetUnfolderBase]: 1154/2111 cut-off events. [2023-08-27 11:38:55,111 INFO L125 PetriNetUnfolderBase]: For 635/635 co-relation queries the response was YES. [2023-08-27 11:38:55,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 2111 events. 1154/2111 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13014 event pairs, 14 based on Foata normal form. 188/1828 useless extension candidates. Maximal degree in co-relation 4065. Up to 1000 conditions per place. [2023-08-27 11:38:55,122 INFO L140 encePairwiseOnDemand]: 316/321 looper letters, 100 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-08-27 11:38:55,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 110 transitions, 532 flow [2023-08-27 11:38:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:38:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:38:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 947 transitions. [2023-08-27 11:38:55,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4916926272066459 [2023-08-27 11:38:55,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 947 transitions. [2023-08-27 11:38:55,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 947 transitions. [2023-08-27 11:38:55,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:55,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 947 transitions. [2023-08-27 11:38:55,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 11:38:55,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 11:38:55,132 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 11:38:55,132 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 187 flow. Second operand 6 states and 947 transitions. [2023-08-27 11:38:55,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 110 transitions, 532 flow [2023-08-27 11:38:55,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 110 transitions, 506 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-27 11:38:55,136 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 129 flow [2023-08-27 11:38:55,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-27 11:38:55,137 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-08-27 11:38:55,137 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 129 flow [2023-08-27 11:38:55,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 11:38:55,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:55,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:38:55,148 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 11:38:55,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:55,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:55,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:55,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1882114586, now seen corresponding path program 1 times [2023-08-27 11:38:55,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:55,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579085845] [2023-08-27 11:38:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:55,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:55,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579085845] [2023-08-27 11:38:55,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579085845] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473783776] [2023-08-27 11:38:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:55,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:55,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:55,377 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 11:38:55,405 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 11:38:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:55,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:38:55,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:55,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:38:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473783776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:55,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:38:55,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 11:38:55,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261937150] [2023-08-27 11:38:55,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:55,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:55,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:38:55,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 321 [2023-08-27 11:38:55,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 11:38:55,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:55,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 321 [2023-08-27 11:38:55,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:55,592 INFO L124 PetriNetUnfolderBase]: 830/1495 cut-off events. [2023-08-27 11:38:55,592 INFO L125 PetriNetUnfolderBase]: For 632/632 co-relation queries the response was YES. [2023-08-27 11:38:55,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 1495 events. 830/1495 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8451 event pairs, 370 based on Foata normal form. 0/1272 useless extension candidates. Maximal degree in co-relation 1836. Up to 1382 conditions per place. [2023-08-27 11:38:55,600 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 44 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-27 11:38:55,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 242 flow [2023-08-27 11:38:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 609 transitions. [2023-08-27 11:38:55,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742990654205608 [2023-08-27 11:38:55,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 609 transitions. [2023-08-27 11:38:55,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 609 transitions. [2023-08-27 11:38:55,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:55,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 609 transitions. [2023-08-27 11:38:55,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 11:38:55,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:38:55,606 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:38:55,606 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 129 flow. Second operand 4 states and 609 transitions. [2023-08-27 11:38:55,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 242 flow [2023-08-27 11:38:55,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 235 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 11:38:55,608 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 120 flow [2023-08-27 11:38:55,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-27 11:38:55,609 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -4 predicate places. [2023-08-27 11:38:55,610 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 120 flow [2023-08-27 11:38:55,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 11:38:55,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:55,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:55,618 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 11:38:55,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-27 11:38:55,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:55,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash -623422243, now seen corresponding path program 1 times [2023-08-27 11:38:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:55,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391007108] [2023-08-27 11:38:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:55,895 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 11:38:55,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:55,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391007108] [2023-08-27 11:38:55,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391007108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:55,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:55,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:38:55,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412192864] [2023-08-27 11:38:55,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:55,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:55,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:55,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:55,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:55,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 321 [2023-08-27 11:38:55,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 11:38:55,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:55,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 321 [2023-08-27 11:38:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:56,082 INFO L124 PetriNetUnfolderBase]: 1073/2055 cut-off events. [2023-08-27 11:38:56,082 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-27 11:38:56,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 2055 events. 1073/2055 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13313 event pairs, 370 based on Foata normal form. 0/1805 useless extension candidates. Maximal degree in co-relation 4494. Up to 947 conditions per place. [2023-08-27 11:38:56,091 INFO L140 encePairwiseOnDemand]: 309/321 looper letters, 50 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2023-08-27 11:38:56,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 323 flow [2023-08-27 11:38:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-27 11:38:56,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4454828660436137 [2023-08-27 11:38:56,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-27 11:38:56,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-27 11:38:56,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:56,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-27 11:38:56,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 11:38:56,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 11:38:56,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 11:38:56,098 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 120 flow. Second operand 3 states and 429 transitions. [2023-08-27 11:38:56,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 323 flow [2023-08-27 11:38:56,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:56,101 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 213 flow [2023-08-27 11:38:56,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-27 11:38:56,101 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-08-27 11:38:56,101 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 213 flow [2023-08-27 11:38:56,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 11:38:56,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:56,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:56,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:38:56,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:56,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash -623422265, now seen corresponding path program 1 times [2023-08-27 11:38:56,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:56,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7877438] [2023-08-27 11:38:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:56,207 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 11:38:56,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:56,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7877438] [2023-08-27 11:38:56,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7877438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:56,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:56,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:38:56,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939104865] [2023-08-27 11:38:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:56,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:38:56,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:56,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:38:56,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:38:56,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 321 [2023-08-27 11:38:56,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:56,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:56,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 321 [2023-08-27 11:38:56,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:56,592 INFO L124 PetriNetUnfolderBase]: 1193/2366 cut-off events. [2023-08-27 11:38:56,593 INFO L125 PetriNetUnfolderBase]: For 1540/1540 co-relation queries the response was YES. [2023-08-27 11:38:56,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6426 conditions, 2366 events. 1193/2366 cut-off events. For 1540/1540 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 16075 event pairs, 310 based on Foata normal form. 71/2436 useless extension candidates. Maximal degree in co-relation 6338. Up to 1459 conditions per place. [2023-08-27 11:38:56,604 INFO L140 encePairwiseOnDemand]: 305/321 looper letters, 103 selfloop transitions, 28 changer transitions 0/137 dead transitions. [2023-08-27 11:38:56,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 137 transitions, 821 flow [2023-08-27 11:38:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:38:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:38:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 904 transitions. [2023-08-27 11:38:56,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023141967067201 [2023-08-27 11:38:56,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 904 transitions. [2023-08-27 11:38:56,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 904 transitions. [2023-08-27 11:38:56,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:56,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 904 transitions. [2023-08-27 11:38:56,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 11:38:56,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:38:56,614 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:38:56,614 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 213 flow. Second operand 7 states and 904 transitions. [2023-08-27 11:38:56,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 137 transitions, 821 flow [2023-08-27 11:38:56,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 137 transitions, 765 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:56,621 INFO L231 Difference]: Finished difference. Result has 62 places, 74 transitions, 469 flow [2023-08-27 11:38:56,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=62, PETRI_TRANSITIONS=74} [2023-08-27 11:38:56,622 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-08-27 11:38:56,622 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 74 transitions, 469 flow [2023-08-27 11:38:56,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:56,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:56,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:38:56,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:56,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1293788267, now seen corresponding path program 1 times [2023-08-27 11:38:56,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:56,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848743519] [2023-08-27 11:38:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:56,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:56,773 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 11:38:56,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:56,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848743519] [2023-08-27 11:38:56,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848743519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:56,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95508109] [2023-08-27 11:38:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:56,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:56,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:56,775 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 11:38:56,778 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 11:38:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:56,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 11:38:56,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:56,865 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:38:56,866 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:38:56,884 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 14 treesize of output 16 [2023-08-27 11:38:56,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:38:56,982 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 14 treesize of output 16 [2023-08-27 11:38:57,001 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 11:38:57,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:38:57,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95508109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:57,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:38:57,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:38:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392914096] [2023-08-27 11:38:57,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:57,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:38:57,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:38:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:38:57,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 321 [2023-08-27 11:38:57,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 74 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 11:38:57,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:57,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 321 [2023-08-27 11:38:57,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:57,271 INFO L124 PetriNetUnfolderBase]: 1150/2269 cut-off events. [2023-08-27 11:38:57,272 INFO L125 PetriNetUnfolderBase]: For 3221/3221 co-relation queries the response was YES. [2023-08-27 11:38:57,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7424 conditions, 2269 events. 1150/2269 cut-off events. For 3221/3221 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15087 event pairs, 393 based on Foata normal form. 24/2292 useless extension candidates. Maximal degree in co-relation 7324. Up to 1652 conditions per place. [2023-08-27 11:38:57,285 INFO L140 encePairwiseOnDemand]: 314/321 looper letters, 93 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2023-08-27 11:38:57,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 111 transitions, 871 flow [2023-08-27 11:38:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:38:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:38:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 628 transitions. [2023-08-27 11:38:57,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912772585669782 [2023-08-27 11:38:57,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 628 transitions. [2023-08-27 11:38:57,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 628 transitions. [2023-08-27 11:38:57,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:57,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 628 transitions. [2023-08-27 11:38:57,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 11:38:57,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 11:38:57,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 11:38:57,291 INFO L175 Difference]: Start difference. First operand has 62 places, 74 transitions, 469 flow. Second operand 5 states and 628 transitions. [2023-08-27 11:38:57,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 111 transitions, 871 flow [2023-08-27 11:38:57,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 111 transitions, 859 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 11:38:57,298 INFO L231 Difference]: Finished difference. Result has 66 places, 78 transitions, 531 flow [2023-08-27 11:38:57,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=531, PETRI_PLACES=66, PETRI_TRANSITIONS=78} [2023-08-27 11:38:57,299 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2023-08-27 11:38:57,299 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 78 transitions, 531 flow [2023-08-27 11:38:57,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 11:38:57,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:57,299 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:57,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 11:38:57,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 11:38:57,505 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:57,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1293960295, now seen corresponding path program 1 times [2023-08-27 11:38:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:57,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685266218] [2023-08-27 11:38:57,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:57,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:57,628 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 11:38:57,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:57,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685266218] [2023-08-27 11:38:57,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685266218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:57,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949825450] [2023-08-27 11:38:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:57,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:57,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:57,630 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 11:38:57,632 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 11:38:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:57,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:38:57,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:57,713 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:38:57,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:38:57,754 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 11:38:57,780 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 14 treesize of output 16 [2023-08-27 11:38:57,791 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 11:38:57,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:38:57,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949825450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:57,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:38:57,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-27 11:38:57,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062143253] [2023-08-27 11:38:57,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:57,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:38:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:57,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:38:57,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:38:57,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 321 [2023-08-27 11:38:57,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 78 transitions, 531 flow. Second operand has 5 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 11:38:57,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:57,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 321 [2023-08-27 11:38:57,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:58,021 INFO L124 PetriNetUnfolderBase]: 1106/2165 cut-off events. [2023-08-27 11:38:58,022 INFO L125 PetriNetUnfolderBase]: For 3839/3839 co-relation queries the response was YES. [2023-08-27 11:38:58,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7199 conditions, 2165 events. 1106/2165 cut-off events. For 3839/3839 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14153 event pairs, 610 based on Foata normal form. 40/2201 useless extension candidates. Maximal degree in co-relation 7093. Up to 1596 conditions per place. [2023-08-27 11:38:58,036 INFO L140 encePairwiseOnDemand]: 313/321 looper letters, 69 selfloop transitions, 10 changer transitions 4/89 dead transitions. [2023-08-27 11:38:58,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 736 flow [2023-08-27 11:38:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 524 transitions. [2023-08-27 11:38:58,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40809968847352024 [2023-08-27 11:38:58,038 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 524 transitions. [2023-08-27 11:38:58,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 524 transitions. [2023-08-27 11:38:58,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:58,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 524 transitions. [2023-08-27 11:38:58,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:38:58,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:38:58,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:38:58,042 INFO L175 Difference]: Start difference. First operand has 66 places, 78 transitions, 531 flow. Second operand 4 states and 524 transitions. [2023-08-27 11:38:58,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 736 flow [2023-08-27 11:38:58,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 717 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 11:38:58,048 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 536 flow [2023-08-27 11:38:58,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-08-27 11:38:58,048 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-08-27 11:38:58,048 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 536 flow [2023-08-27 11:38:58,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 11:38:58,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:58,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:58,059 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 11:38:58,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:58,260 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:58,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1737611644, now seen corresponding path program 1 times [2023-08-27 11:38:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424947333] [2023-08-27 11:38:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:58,372 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 11:38:58,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:58,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424947333] [2023-08-27 11:38:58,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424947333] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:58,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311903935] [2023-08-27 11:38:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:58,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:58,374 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 11:38:58,383 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 11:38:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:58,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 11:38:58,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:58,472 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:38:58,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:38:58,489 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 14 treesize of output 16 [2023-08-27 11:38:58,521 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 14 treesize of output 16 [2023-08-27 11:38:58,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:38:58,592 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 11:38:58,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:38:58,636 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_298 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_298) c_~g1~0.base) c_~g1~0.offset) 2147483649))) is different from false [2023-08-27 11:38:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-27 11:38:58,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311903935] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:38:58,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:38:58,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 11:38:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893825522] [2023-08-27 11:38:58,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:38:58,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:38:58,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:58,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:38:58,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2023-08-27 11:38:58,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 321 [2023-08-27 11:38:58,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 536 flow. Second operand has 14 states, 14 states have (on average 115.57142857142857) internal successors, (1618), 14 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:58,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:58,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 321 [2023-08-27 11:38:58,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:59,306 INFO L124 PetriNetUnfolderBase]: 1296/2565 cut-off events. [2023-08-27 11:38:59,307 INFO L125 PetriNetUnfolderBase]: For 5351/5351 co-relation queries the response was YES. [2023-08-27 11:38:59,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 2565 events. 1296/2565 cut-off events. For 5351/5351 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17408 event pairs, 204 based on Foata normal form. 82/2646 useless extension candidates. Maximal degree in co-relation 8472. Up to 1236 conditions per place. [2023-08-27 11:38:59,323 INFO L140 encePairwiseOnDemand]: 305/321 looper letters, 128 selfloop transitions, 71 changer transitions 12/217 dead transitions. [2023-08-27 11:38:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 217 transitions, 1736 flow [2023-08-27 11:38:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:38:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:38:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1965 transitions. [2023-08-27 11:38:59,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38259345794392524 [2023-08-27 11:38:59,329 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1965 transitions. [2023-08-27 11:38:59,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1965 transitions. [2023-08-27 11:38:59,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:59,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1965 transitions. [2023-08-27 11:38:59,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.8125) internal successors, (1965), 16 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states 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 11:38:59,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states 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 11:38:59,341 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states 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 11:38:59,341 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 536 flow. Second operand 16 states and 1965 transitions. [2023-08-27 11:38:59,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 217 transitions, 1736 flow [2023-08-27 11:38:59,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 217 transitions, 1702 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:59,363 INFO L231 Difference]: Finished difference. Result has 89 places, 125 transitions, 1213 flow [2023-08-27 11:38:59,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1213, PETRI_PLACES=89, PETRI_TRANSITIONS=125} [2023-08-27 11:38:59,363 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2023-08-27 11:38:59,363 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 125 transitions, 1213 flow [2023-08-27 11:38:59,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.57142857142857) internal successors, (1618), 14 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:59,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:59,364 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:59,372 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 11:38:59,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 11:38:59,573 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:59,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1258862838, now seen corresponding path program 1 times [2023-08-27 11:38:59,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:59,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658850559] [2023-08-27 11:38:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:59,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:59,649 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 11:38:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:59,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658850559] [2023-08-27 11:38:59,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658850559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:59,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:59,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:38:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248316739] [2023-08-27 11:38:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:59,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:59,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:59,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:59,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:38:59,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 321 [2023-08-27 11:38:59,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 125 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 11:38:59,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:59,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 321 [2023-08-27 11:38:59,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:59,729 INFO L124 PetriNetUnfolderBase]: 150/456 cut-off events. [2023-08-27 11:38:59,730 INFO L125 PetriNetUnfolderBase]: For 1233/1233 co-relation queries the response was YES. [2023-08-27 11:38:59,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1771 conditions, 456 events. 150/456 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2300 event pairs, 55 based on Foata normal form. 76/532 useless extension candidates. Maximal degree in co-relation 1715. Up to 357 conditions per place. [2023-08-27 11:38:59,732 INFO L140 encePairwiseOnDemand]: 316/321 looper letters, 60 selfloop transitions, 5 changer transitions 7/76 dead transitions. [2023-08-27 11:38:59,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 76 transitions, 755 flow [2023-08-27 11:38:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 528 transitions. [2023-08-27 11:38:59,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.411214953271028 [2023-08-27 11:38:59,734 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 528 transitions. [2023-08-27 11:38:59,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 528 transitions. [2023-08-27 11:38:59,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:59,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 528 transitions. [2023-08-27 11:38:59,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 11:38:59,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:38:59,738 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:38:59,738 INFO L175 Difference]: Start difference. First operand has 89 places, 125 transitions, 1213 flow. Second operand 4 states and 528 transitions. [2023-08-27 11:38:59,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 76 transitions, 755 flow [2023-08-27 11:38:59,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 643 flow, removed 38 selfloop flow, removed 7 redundant places. [2023-08-27 11:38:59,744 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 418 flow [2023-08-27 11:38:59,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2023-08-27 11:38:59,744 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2023-08-27 11:38:59,744 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 418 flow [2023-08-27 11:38:59,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 11:38:59,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:59,745 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:59,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 11:38:59,745 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:59,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1772283190, now seen corresponding path program 1 times [2023-08-27 11:38:59,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:59,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617301962] [2023-08-27 11:38:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:59,852 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 11:38:59,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:59,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617301962] [2023-08-27 11:38:59,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617301962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:59,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:59,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:38:59,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839687927] [2023-08-27 11:38:59,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:59,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:38:59,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:59,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:38:59,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:38:59,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 321 [2023-08-27 11:38:59,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 418 flow. Second operand has 5 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 11:38:59,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:59,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 321 [2023-08-27 11:38:59,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:59,970 INFO L124 PetriNetUnfolderBase]: 132/431 cut-off events. [2023-08-27 11:38:59,970 INFO L125 PetriNetUnfolderBase]: For 786/786 co-relation queries the response was YES. [2023-08-27 11:38:59,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 431 events. 132/431 cut-off events. For 786/786 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2279 event pairs, 49 based on Foata normal form. 3/433 useless extension candidates. Maximal degree in co-relation 1421. Up to 183 conditions per place. [2023-08-27 11:38:59,973 INFO L140 encePairwiseOnDemand]: 309/321 looper letters, 59 selfloop transitions, 31 changer transitions 2/98 dead transitions. [2023-08-27 11:38:59,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 783 flow [2023-08-27 11:38:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:38:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:38:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 913 transitions. [2023-08-27 11:38:59,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40631953716065866 [2023-08-27 11:38:59,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 913 transitions. [2023-08-27 11:38:59,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 913 transitions. [2023-08-27 11:38:59,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:59,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 913 transitions. [2023-08-27 11:38:59,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 11:38:59,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:38:59,980 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:38:59,980 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 418 flow. Second operand 7 states and 913 transitions. [2023-08-27 11:38:59,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 783 flow [2023-08-27 11:38:59,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 764 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 11:38:59,985 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 554 flow [2023-08-27 11:38:59,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2023-08-27 11:38:59,985 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2023-08-27 11:38:59,985 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 554 flow [2023-08-27 11:38:59,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 11:38:59,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:59,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:59,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 11:38:59,986 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:38:59,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:59,986 INFO L85 PathProgramCache]: Analyzing trace with hash -325112715, now seen corresponding path program 1 times [2023-08-27 11:38:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323412353] [2023-08-27 11:38:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:59,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:00,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:00,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323412353] [2023-08-27 11:39:00,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323412353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:00,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:00,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:39:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127937813] [2023-08-27 11:39:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:00,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:39:00,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:39:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:39:00,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 321 [2023-08-27 11:39:00,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 554 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 11:39:00,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:00,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 321 [2023-08-27 11:39:00,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:00,145 INFO L124 PetriNetUnfolderBase]: 132/436 cut-off events. [2023-08-27 11:39:00,145 INFO L125 PetriNetUnfolderBase]: For 1154/1154 co-relation queries the response was YES. [2023-08-27 11:39:00,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 436 events. 132/436 cut-off events. For 1154/1154 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2327 event pairs, 58 based on Foata normal form. 3/438 useless extension candidates. Maximal degree in co-relation 1558. Up to 238 conditions per place. [2023-08-27 11:39:00,147 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 62 selfloop transitions, 22 changer transitions 1/91 dead transitions. [2023-08-27 11:39:00,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 833 flow [2023-08-27 11:39:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:39:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:39:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 635 transitions. [2023-08-27 11:39:00,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956386292834891 [2023-08-27 11:39:00,150 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 635 transitions. [2023-08-27 11:39:00,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 635 transitions. [2023-08-27 11:39:00,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:00,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 635 transitions. [2023-08-27 11:39:00,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states 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 11:39:00,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 11:39:00,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 11:39:00,154 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 554 flow. Second operand 5 states and 635 transitions. [2023-08-27 11:39:00,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 833 flow [2023-08-27 11:39:00,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 782 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-08-27 11:39:00,159 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 662 flow [2023-08-27 11:39:00,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=662, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2023-08-27 11:39:00,160 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2023-08-27 11:39:00,160 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 662 flow [2023-08-27 11:39:00,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 11:39:00,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:00,160 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:00,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 11:39:00,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:39:00,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash 696225127, now seen corresponding path program 1 times [2023-08-27 11:39:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:00,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847642998] [2023-08-27 11:39:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847642998] [2023-08-27 11:39:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847642998] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760077968] [2023-08-27 11:39:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:00,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:00,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:00,345 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 11:39:00,354 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 11:39:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:00,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:39:00,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:00,451 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:39:00,452 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:39:00,500 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 11:39:00,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:39:00,584 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:39:00,612 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 11:39:00,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:39:00,671 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_423 Int) (v_ArrVal_425 (Array Int Int))) (or (< (+ v_ArrVal_423 1) |c_t_funThread1of2ForFork0_#t~mem8|) (< 0 (+ (select (select (store (store |c_#memory_int| c_~g1~0.base (store (select |c_#memory_int| c_~g1~0.base) c_~g1~0.offset v_ArrVal_423)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_425) c_~g1~0.base) c_~g1~0.offset) 2147483650)))) is different from false [2023-08-27 11:39:00,680 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_423 Int) (v_ArrVal_425 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~g1~0.base))) (or (< (+ v_ArrVal_423 1) (select .cse0 c_~g1~0.offset)) (< 0 (+ (select (select (store (store |c_#memory_int| c_~g1~0.base (store .cse0 c_~g1~0.offset v_ArrVal_423)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_425) c_~g1~0.base) c_~g1~0.offset) 2147483650))))) is different from false [2023-08-27 11:39:00,698 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:39:00,698 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-27 11:39:00,702 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 33 treesize of output 25 [2023-08-27 11:39:00,738 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 11:39:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760077968] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:39:00,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:39:00,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 11:39:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536587166] [2023-08-27 11:39:00,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:39:00,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 11:39:00,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 11:39:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=231, Unknown=2, NotChecked=66, Total=380 [2023-08-27 11:39:00,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 321 [2023-08-27 11:39:00,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 662 flow. Second operand has 20 states, 20 states have (on average 113.7) internal successors, (2274), 20 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states 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 11:39:00,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:00,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 321 [2023-08-27 11:39:00,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:01,208 INFO L124 PetriNetUnfolderBase]: 132/429 cut-off events. [2023-08-27 11:39:01,208 INFO L125 PetriNetUnfolderBase]: For 1470/1470 co-relation queries the response was YES. [2023-08-27 11:39:01,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 429 events. 132/429 cut-off events. For 1470/1470 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2254 event pairs, 35 based on Foata normal form. 3/431 useless extension candidates. Maximal degree in co-relation 1691. Up to 118 conditions per place. [2023-08-27 11:39:01,211 INFO L140 encePairwiseOnDemand]: 306/321 looper letters, 75 selfloop transitions, 31 changer transitions 2/114 dead transitions. [2023-08-27 11:39:01,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 114 transitions, 1095 flow [2023-08-27 11:39:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:39:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:39:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1733 transitions. [2023-08-27 11:39:01,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35991692627206645 [2023-08-27 11:39:01,216 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1733 transitions. [2023-08-27 11:39:01,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1733 transitions. [2023-08-27 11:39:01,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:01,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1733 transitions. [2023-08-27 11:39:01,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 115.53333333333333) internal successors, (1733), 15 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states 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 11:39:01,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 321.0) internal successors, (5136), 16 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states 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 11:39:01,227 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 321.0) internal successors, (5136), 16 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states 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 11:39:01,227 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 662 flow. Second operand 15 states and 1733 transitions. [2023-08-27 11:39:01,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 114 transitions, 1095 flow [2023-08-27 11:39:01,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 1085 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-27 11:39:01,234 INFO L231 Difference]: Finished difference. Result has 107 places, 80 transitions, 737 flow [2023-08-27 11:39:01,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=737, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2023-08-27 11:39:01,235 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2023-08-27 11:39:01,235 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 737 flow [2023-08-27 11:39:01,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 113.7) internal successors, (2274), 20 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states 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 11:39:01,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:01,236 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:01,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 11:39:01,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:01,442 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:39:01,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash 696225182, now seen corresponding path program 2 times [2023-08-27 11:39:01,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:01,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623974909] [2023-08-27 11:39:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:01,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623974909] [2023-08-27 11:39:01,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623974909] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212313090] [2023-08-27 11:39:01,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:39:01,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:01,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:01,622 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 11:39:01,646 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 11:39:01,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:39:01,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:39:01,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:39:01,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:01,740 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:39:01,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:39:01,772 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 11:39:01,816 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:39:01,844 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 14 treesize of output 16 [2023-08-27 11:39:01,867 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 11:39:01,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:39:01,918 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_480 Int) (v_ArrVal_482 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| c_~g1~0.base (store (select |c_#memory_int| c_~g1~0.base) c_~g1~0.offset v_ArrVal_480)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_482) c_~g1~0.base) c_~g1~0.offset) 2147483647) (< |c_t_funThread1of2ForFork0_#t~mem8| (+ v_ArrVal_480 1)))) is different from false [2023-08-27 11:39:01,929 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_480 Int) (v_ArrVal_482 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~g1~0.base))) (or (< (select (select (store (store |c_#memory_int| c_~g1~0.base (store .cse0 c_~g1~0.offset v_ArrVal_480)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_482) c_~g1~0.base) c_~g1~0.offset) 2147483647) (< (select .cse0 c_~g1~0.offset) (+ v_ArrVal_480 1))))) is different from false [2023-08-27 11:39:01,948 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:39:01,949 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-27 11:39:01,951 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 29 treesize of output 21 [2023-08-27 11:39:01,976 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 11:39:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212313090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:39:01,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:39:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-27 11:39:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853995706] [2023-08-27 11:39:01,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:39:01,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:39:01,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:39:01,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=181, Unknown=2, NotChecked=58, Total=306 [2023-08-27 11:39:01,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 321 [2023-08-27 11:39:01,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 737 flow. Second operand has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 11:39:01,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:01,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 321 [2023-08-27 11:39:01,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:02,281 INFO L124 PetriNetUnfolderBase]: 128/413 cut-off events. [2023-08-27 11:39:02,281 INFO L125 PetriNetUnfolderBase]: For 1729/1729 co-relation queries the response was YES. [2023-08-27 11:39:02,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 413 events. 128/413 cut-off events. For 1729/1729 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2118 event pairs, 34 based on Foata normal form. 6/418 useless extension candidates. Maximal degree in co-relation 1752. Up to 125 conditions per place. [2023-08-27 11:39:02,283 INFO L140 encePairwiseOnDemand]: 309/321 looper letters, 70 selfloop transitions, 24 changer transitions 3/103 dead transitions. [2023-08-27 11:39:02,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 103 transitions, 1040 flow [2023-08-27 11:39:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:39:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:39:02,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1279 transitions. [2023-08-27 11:39:02,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362220334182951 [2023-08-27 11:39:02,287 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1279 transitions. [2023-08-27 11:39:02,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1279 transitions. [2023-08-27 11:39:02,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:02,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1279 transitions. [2023-08-27 11:39:02,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.27272727272727) internal successors, (1279), 11 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states 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 11:39:02,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states 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 11:39:02,294 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states 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 11:39:02,294 INFO L175 Difference]: Start difference. First operand has 107 places, 80 transitions, 737 flow. Second operand 11 states and 1279 transitions. [2023-08-27 11:39:02,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 103 transitions, 1040 flow [2023-08-27 11:39:02,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 969 flow, removed 10 selfloop flow, removed 14 redundant places. [2023-08-27 11:39:02,302 INFO L231 Difference]: Finished difference. Result has 101 places, 76 transitions, 655 flow [2023-08-27 11:39:02,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=655, PETRI_PLACES=101, PETRI_TRANSITIONS=76} [2023-08-27 11:39:02,302 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2023-08-27 11:39:02,302 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 76 transitions, 655 flow [2023-08-27 11:39:02,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 11:39:02,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:02,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:02,309 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 11:39:02,508 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,SelfDestructingSolverStorable21 [2023-08-27 11:39:02,508 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:39:02,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash -325112657, now seen corresponding path program 1 times [2023-08-27 11:39:02,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:02,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115690525] [2023-08-27 11:39:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115690525] [2023-08-27 11:39:02,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115690525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:02,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:02,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:39:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54535790] [2023-08-27 11:39:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:02,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:39:02,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:39:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:39:02,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 321 [2023-08-27 11:39:02,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 76 transitions, 655 flow. Second operand has 5 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 11:39:02,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:02,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 321 [2023-08-27 11:39:02,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:02,718 INFO L124 PetriNetUnfolderBase]: 127/416 cut-off events. [2023-08-27 11:39:02,718 INFO L125 PetriNetUnfolderBase]: For 1659/1659 co-relation queries the response was YES. [2023-08-27 11:39:02,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1756 conditions, 416 events. 127/416 cut-off events. For 1659/1659 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2163 event pairs, 36 based on Foata normal form. 3/418 useless extension candidates. Maximal degree in co-relation 1668. Up to 160 conditions per place. [2023-08-27 11:39:02,721 INFO L140 encePairwiseOnDemand]: 309/321 looper letters, 53 selfloop transitions, 36 changer transitions 0/95 dead transitions. [2023-08-27 11:39:02,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 925 flow [2023-08-27 11:39:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:39:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:39:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 878 transitions. [2023-08-27 11:39:02,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907432131731197 [2023-08-27 11:39:02,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 878 transitions. [2023-08-27 11:39:02,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 878 transitions. [2023-08-27 11:39:02,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:02,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 878 transitions. [2023-08-27 11:39:02,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states 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 11:39:02,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:39:02,727 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:39:02,727 INFO L175 Difference]: Start difference. First operand has 101 places, 76 transitions, 655 flow. Second operand 7 states and 878 transitions. [2023-08-27 11:39:02,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 925 flow [2023-08-27 11:39:02,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 877 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-27 11:39:02,733 INFO L231 Difference]: Finished difference. Result has 101 places, 78 transitions, 744 flow [2023-08-27 11:39:02,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=744, PETRI_PLACES=101, PETRI_TRANSITIONS=78} [2023-08-27 11:39:02,733 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2023-08-27 11:39:02,733 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 78 transitions, 744 flow [2023-08-27 11:39:02,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 11:39:02,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:02,734 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:02,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:39:02,734 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:39:02,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2123571151, now seen corresponding path program 2 times [2023-08-27 11:39:02,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:02,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980296896] [2023-08-27 11:39:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:02,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:39:02,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:02,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980296896] [2023-08-27 11:39:02,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980296896] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:02,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306976078] [2023-08-27 11:39:02,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:39:02,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:02,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:02,922 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 11:39:02,956 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 11:39:03,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:39:03,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:39:03,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:39:03,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:03,065 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:39:03,066 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:39:03,105 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 11:39:03,129 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 14 treesize of output 16 [2023-08-27 11:39:03,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:39:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:39:03,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:39:03,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306976078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:03,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:39:03,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-27 11:39:03,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611100712] [2023-08-27 11:39:03,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:03,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:03,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:03,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:03,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:39:03,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 321 [2023-08-27 11:39:03,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 78 transitions, 744 flow. Second operand has 7 states, 7 states have (on average 115.57142857142857) internal successors, (809), 7 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 11:39:03,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:03,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 321 [2023-08-27 11:39:03,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:03,313 INFO L124 PetriNetUnfolderBase]: 126/415 cut-off events. [2023-08-27 11:39:03,313 INFO L125 PetriNetUnfolderBase]: For 1934/1934 co-relation queries the response was YES. [2023-08-27 11:39:03,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 415 events. 126/415 cut-off events. For 1934/1934 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2167 event pairs, 58 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1727. Up to 222 conditions per place. [2023-08-27 11:39:03,315 INFO L140 encePairwiseOnDemand]: 313/321 looper letters, 63 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2023-08-27 11:39:03,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 84 transitions, 915 flow [2023-08-27 11:39:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:39:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:39:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 716 transitions. [2023-08-27 11:39:03,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37175493250259606 [2023-08-27 11:39:03,317 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 716 transitions. [2023-08-27 11:39:03,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 716 transitions. [2023-08-27 11:39:03,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:03,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 716 transitions. [2023-08-27 11:39:03,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 11:39:03,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 11:39:03,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 11:39:03,321 INFO L175 Difference]: Start difference. First operand has 101 places, 78 transitions, 744 flow. Second operand 6 states and 716 transitions. [2023-08-27 11:39:03,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 84 transitions, 915 flow [2023-08-27 11:39:03,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 84 transitions, 851 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-27 11:39:03,327 INFO L231 Difference]: Finished difference. Result has 99 places, 76 transitions, 682 flow [2023-08-27 11:39:03,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=99, PETRI_TRANSITIONS=76} [2023-08-27 11:39:03,328 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2023-08-27 11:39:03,328 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 76 transitions, 682 flow [2023-08-27 11:39:03,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.57142857142857) internal successors, (809), 7 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 11:39:03,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:03,328 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:03,340 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 11:39:03,534 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,SelfDestructingSolverStorable23 [2023-08-27 11:39:03,534 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:39:03,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:03,534 INFO L85 PathProgramCache]: Analyzing trace with hash -182119825, now seen corresponding path program 2 times [2023-08-27 11:39:03,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:03,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076131441] [2023-08-27 11:39:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:03,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:39:03,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:03,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076131441] [2023-08-27 11:39:03,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076131441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:03,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779104200] [2023-08-27 11:39:03,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:39:03,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:03,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:03,742 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:39:03,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 11:39:03,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:39:03,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:39:03,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:39:03,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:03,856 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:39:03,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:39:03,924 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 11:39:03,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:39:04,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:39:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:39:04,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:39:04,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779104200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:04,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:39:04,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2023-08-27 11:39:04,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525334674] [2023-08-27 11:39:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:04,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:04,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:39:04,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 321 [2023-08-27 11:39:04,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 76 transitions, 682 flow. Second operand has 8 states, 8 states have (on average 109.25) internal successors, (874), 8 states have internal predecessors, (874), 0 states have call successors, (0), 0 states 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 11:39:04,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:04,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 321 [2023-08-27 11:39:04,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:04,157 INFO L124 PetriNetUnfolderBase]: 126/416 cut-off events. [2023-08-27 11:39:04,157 INFO L125 PetriNetUnfolderBase]: For 1753/1753 co-relation queries the response was YES. [2023-08-27 11:39:04,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 416 events. 126/416 cut-off events. For 1753/1753 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2181 event pairs, 62 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 1668. Up to 174 conditions per place. [2023-08-27 11:39:04,160 INFO L140 encePairwiseOnDemand]: 312/321 looper letters, 58 selfloop transitions, 22 changer transitions 1/87 dead transitions. [2023-08-27 11:39:04,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 87 transitions, 924 flow [2023-08-27 11:39:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:39:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:39:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 788 transitions. [2023-08-27 11:39:04,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506898086337339 [2023-08-27 11:39:04,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 788 transitions. [2023-08-27 11:39:04,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 788 transitions. [2023-08-27 11:39:04,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:04,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 788 transitions. [2023-08-27 11:39:04,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.57142857142857) internal successors, (788), 7 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 11:39:04,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:39:04,165 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 11:39:04,165 INFO L175 Difference]: Start difference. First operand has 99 places, 76 transitions, 682 flow. Second operand 7 states and 788 transitions. [2023-08-27 11:39:04,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 87 transitions, 924 flow [2023-08-27 11:39:04,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 87 transitions, 883 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 11:39:04,172 INFO L231 Difference]: Finished difference. Result has 98 places, 75 transitions, 674 flow [2023-08-27 11:39:04,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=674, PETRI_PLACES=98, PETRI_TRANSITIONS=75} [2023-08-27 11:39:04,172 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2023-08-27 11:39:04,172 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 75 transitions, 674 flow [2023-08-27 11:39:04,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.25) internal successors, (874), 8 states have internal predecessors, (874), 0 states have call successors, (0), 0 states 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 11:39:04,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:04,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:04,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 11:39:04,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 11:39:04,378 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:39:04,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash 473039773, now seen corresponding path program 1 times [2023-08-27 11:39:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082831174] [2023-08-27 11:39:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:04,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082831174] [2023-08-27 11:39:04,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082831174] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978894664] [2023-08-27 11:39:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:04,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:04,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:04,652 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:39:04,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 11:39:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:04,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:39:04,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:04,778 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:39:04,779 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:39:04,821 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 11:39:04,849 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:39:04,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:39:04,918 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 11:39:04,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:39:05,015 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_697 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_697) c_~g1~0.base) c_~g1~0.offset)))) is different from false [2023-08-27 11:39:05,028 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:39:05,028 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-27 11:39:05,031 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 35 treesize of output 27 [2023-08-27 11:39:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:39:05,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978894664] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:39:05,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:39:05,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 18 [2023-08-27 11:39:05,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711781538] [2023-08-27 11:39:05,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:39:05,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 11:39:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:05,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 11:39:05,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=272, Unknown=1, NotChecked=34, Total=380 [2023-08-27 11:39:05,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 321 [2023-08-27 11:39:05,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 75 transitions, 674 flow. Second operand has 20 states, 20 states have (on average 108.15) internal successors, (2163), 20 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 11:39:05,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:05,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 321 [2023-08-27 11:39:05,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:05,373 INFO L124 PetriNetUnfolderBase]: 124/405 cut-off events. [2023-08-27 11:39:05,373 INFO L125 PetriNetUnfolderBase]: For 1724/1724 co-relation queries the response was YES. [2023-08-27 11:39:05,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 405 events. 124/405 cut-off events. For 1724/1724 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2085 event pairs, 30 based on Foata normal form. 4/408 useless extension candidates. Maximal degree in co-relation 1636. Up to 105 conditions per place. [2023-08-27 11:39:05,375 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 38 selfloop transitions, 7 changer transitions 53/104 dead transitions. [2023-08-27 11:39:05,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 104 transitions, 1041 flow [2023-08-27 11:39:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:39:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:39:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1317 transitions. [2023-08-27 11:39:05,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34190031152647976 [2023-08-27 11:39:05,382 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1317 transitions. [2023-08-27 11:39:05,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1317 transitions. [2023-08-27 11:39:05,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:05,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1317 transitions. [2023-08-27 11:39:05,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 109.75) internal successors, (1317), 12 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states 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 11:39:05,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 321.0) internal successors, (4173), 13 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states 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 11:39:05,388 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 321.0) internal successors, (4173), 13 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states 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 11:39:05,388 INFO L175 Difference]: Start difference. First operand has 98 places, 75 transitions, 674 flow. Second operand 12 states and 1317 transitions. [2023-08-27 11:39:05,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 104 transitions, 1041 flow [2023-08-27 11:39:05,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 993 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-27 11:39:05,395 INFO L231 Difference]: Finished difference. Result has 99 places, 46 transitions, 368 flow [2023-08-27 11:39:05,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=368, PETRI_PLACES=99, PETRI_TRANSITIONS=46} [2023-08-27 11:39:05,395 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2023-08-27 11:39:05,395 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 46 transitions, 368 flow [2023-08-27 11:39:05,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.15) internal successors, (2163), 20 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 11:39:05,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:05,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:05,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 11:39:05,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 11:39:05,602 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:39:05,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash -113260566, now seen corresponding path program 1 times [2023-08-27 11:39:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:05,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087771408] [2023-08-27 11:39:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:05,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:05,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087771408] [2023-08-27 11:39:05,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087771408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:05,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:05,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:05,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020517620] [2023-08-27 11:39:05,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:05,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:39:05,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:39:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:39:05,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 321 [2023-08-27 11:39:05,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 46 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 11:39:05,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:05,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 321 [2023-08-27 11:39:05,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:05,801 INFO L124 PetriNetUnfolderBase]: 38/156 cut-off events. [2023-08-27 11:39:05,801 INFO L125 PetriNetUnfolderBase]: For 450/450 co-relation queries the response was YES. [2023-08-27 11:39:05,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 156 events. 38/156 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 513 event pairs, 18 based on Foata normal form. 3/158 useless extension candidates. Maximal degree in co-relation 573. Up to 71 conditions per place. [2023-08-27 11:39:05,803 INFO L140 encePairwiseOnDemand]: 312/321 looper letters, 27 selfloop transitions, 16 changer transitions 10/59 dead transitions. [2023-08-27 11:39:05,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 59 transitions, 555 flow [2023-08-27 11:39:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:39:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:39:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1153 transitions. [2023-08-27 11:39:05,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35919003115264797 [2023-08-27 11:39:05,805 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1153 transitions. [2023-08-27 11:39:05,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1153 transitions. [2023-08-27 11:39:05,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:05,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1153 transitions. [2023-08-27 11:39:05,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.3) internal successors, (1153), 10 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states 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 11:39:05,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 321.0) internal successors, (3531), 11 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states 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 11:39:05,809 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 321.0) internal successors, (3531), 11 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states 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 11:39:05,809 INFO L175 Difference]: Start difference. First operand has 99 places, 46 transitions, 368 flow. Second operand 10 states and 1153 transitions. [2023-08-27 11:39:05,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 59 transitions, 555 flow [2023-08-27 11:39:05,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 464 flow, removed 7 selfloop flow, removed 16 redundant places. [2023-08-27 11:39:05,812 INFO L231 Difference]: Finished difference. Result has 74 places, 41 transitions, 290 flow [2023-08-27 11:39:05,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=74, PETRI_TRANSITIONS=41} [2023-08-27 11:39:05,813 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2023-08-27 11:39:05,813 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 41 transitions, 290 flow [2023-08-27 11:39:05,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 11:39:05,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:05,813 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 11:39:05,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 11:39:05,813 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:39:05,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:05,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1410243568, now seen corresponding path program 2 times [2023-08-27 11:39:05,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:05,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756916815] [2023-08-27 11:39:05,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:05,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:39:06,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756916815] [2023-08-27 11:39:06,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756916815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989758665] [2023-08-27 11:39:06,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:39:06,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:06,072 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:39:06,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 11:39:06,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:39:06,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:39:06,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:39:06,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:06,205 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:39:06,206 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:39:06,270 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 11:39:06,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:39:06,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:39:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:39:06,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:39:06,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989758665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:06,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:39:06,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-27 11:39:06,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677422776] [2023-08-27 11:39:06,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:06,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:06,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:06,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:06,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-08-27 11:39:06,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 321 [2023-08-27 11:39:06,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 41 transitions, 290 flow. Second operand has 8 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:39:06,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:06,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 321 [2023-08-27 11:39:06,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:06,490 INFO L124 PetriNetUnfolderBase]: 33/135 cut-off events. [2023-08-27 11:39:06,491 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-27 11:39:06,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 135 events. 33/135 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 400 event pairs, 20 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 477. Up to 60 conditions per place. [2023-08-27 11:39:06,491 INFO L140 encePairwiseOnDemand]: 313/321 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-27 11:39:06,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 46 transitions, 387 flow [2023-08-27 11:39:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:39:06,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:39:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 885 transitions. [2023-08-27 11:39:06,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446261682242991 [2023-08-27 11:39:06,493 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 885 transitions. [2023-08-27 11:39:06,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 885 transitions. [2023-08-27 11:39:06,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:06,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 885 transitions. [2023-08-27 11:39:06,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.625) internal successors, (885), 8 states have internal predecessors, (885), 0 states have call successors, (0), 0 states 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 11:39:06,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states 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 11:39:06,499 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states 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 11:39:06,499 INFO L175 Difference]: Start difference. First operand has 74 places, 41 transitions, 290 flow. Second operand 8 states and 885 transitions. [2023-08-27 11:39:06,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 46 transitions, 387 flow [2023-08-27 11:39:06,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 46 transitions, 312 flow, removed 8 selfloop flow, removed 16 redundant places. [2023-08-27 11:39:06,501 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-08-27 11:39:06,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-08-27 11:39:06,501 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-08-27 11:39:06,501 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-08-27 11:39:06,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (14 of 17 remaining) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-27 11:39:06,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-27 11:39:06,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-27 11:39:06,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-27 11:39:06,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-27 11:39:06,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-27 11:39:06,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-27 11:39:06,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-27 11:39:06,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-27 11:39:06,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-27 11:39:06,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 11:39:06,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:06,709 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:06,709 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:39:06,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 172 transitions, 362 flow [2023-08-27 11:39:06,734 INFO L124 PetriNetUnfolderBase]: 34/285 cut-off events. [2023-08-27 11:39:06,734 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:39:06,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 34/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 914 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 170. Up to 8 conditions per place. [2023-08-27 11:39:06,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 172 transitions, 362 flow [2023-08-27 11:39:06,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 172 transitions, 362 flow [2023-08-27 11:39:06,737 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:39:06,737 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 172 transitions, 362 flow [2023-08-27 11:39:06,737 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 172 transitions, 362 flow [2023-08-27 11:39:06,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 172 transitions, 362 flow [2023-08-27 11:39:06,757 INFO L124 PetriNetUnfolderBase]: 34/285 cut-off events. [2023-08-27 11:39:06,757 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:39:06,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 34/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 914 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 170. Up to 8 conditions per place. [2023-08-27 11:39:06,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 12400 [2023-08-27 11:39:09,817 INFO L134 LiptonReduction]: Checked pairs total: 25400 [2023-08-27 11:39:09,818 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-27 11:39:09,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:39:09,819 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;@147321b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:39:09,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:39:09,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:39:09,824 INFO L124 PetriNetUnfolderBase]: 12/66 cut-off events. [2023-08-27 11:39:09,824 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:39:09,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:09,824 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:39:09,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:39:09,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2119099220, now seen corresponding path program 1 times [2023-08-27 11:39:09,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:09,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038656939] [2023-08-27 11:39:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:09,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:39:09,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:39:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:39:09,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:39:09,841 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:39:09,841 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:39:09,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 11:39:09,841 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:39:09,842 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:39:09,842 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:39:09,842 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:39:09,857 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:39:09,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 214 transitions, 458 flow [2023-08-27 11:39:09,899 INFO L124 PetriNetUnfolderBase]: 54/443 cut-off events. [2023-08-27 11:39:09,899 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:39:09,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 443 events. 54/443 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1566 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2023-08-27 11:39:09,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 214 transitions, 458 flow [2023-08-27 11:39:09,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 214 transitions, 458 flow [2023-08-27 11:39:09,904 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:39:09,904 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 214 transitions, 458 flow [2023-08-27 11:39:09,905 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 214 transitions, 458 flow [2023-08-27 11:39:09,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 214 transitions, 458 flow [2023-08-27 11:39:09,944 INFO L124 PetriNetUnfolderBase]: 54/443 cut-off events. [2023-08-27 11:39:09,944 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:39:09,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 443 events. 54/443 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1566 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2023-08-27 11:39:09,959 INFO L119 LiptonReduction]: Number of co-enabled transitions 23760 [2023-08-27 11:39:13,167 INFO L134 LiptonReduction]: Checked pairs total: 53063 [2023-08-27 11:39:13,167 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-27 11:39:13,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:39:13,168 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;@147321b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:39:13,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 11:39:13,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:39:13,170 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-08-27 11:39:13,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:39:13,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:13,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:39:13,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:13,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:13,170 INFO L85 PathProgramCache]: Analyzing trace with hash 48238431, now seen corresponding path program 1 times [2023-08-27 11:39:13,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:13,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313192191] [2023-08-27 11:39:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:13,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:13,211 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 11:39:13,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:13,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313192191] [2023-08-27 11:39:13,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313192191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:13,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:13,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:39:13,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910832568] [2023-08-27 11:39:13,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:13,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:39:13,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:39:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:39:13,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 397 [2023-08-27 11:39:13,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 11:39:13,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:13,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 397 [2023-08-27 11:39:13,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:20,657 INFO L124 PetriNetUnfolderBase]: 106504/150622 cut-off events. [2023-08-27 11:39:20,657 INFO L125 PetriNetUnfolderBase]: For 2671/2671 co-relation queries the response was YES. [2023-08-27 11:39:20,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300076 conditions, 150622 events. 106504/150622 cut-off events. For 2671/2671 co-relation queries the response was YES. Maximal size of possible extension queue 3928. Compared 1104394 event pairs, 69316 based on Foata normal form. 11036/113668 useless extension candidates. Maximal degree in co-relation 26589. Up to 147719 conditions per place. [2023-08-27 11:39:21,576 INFO L140 encePairwiseOnDemand]: 371/397 looper letters, 74 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-27 11:39:21,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 350 flow [2023-08-27 11:39:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:39:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:39:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2023-08-27 11:39:21,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298068849706129 [2023-08-27 11:39:21,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2023-08-27 11:39:21,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2023-08-27 11:39:21,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:21,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2023-08-27 11:39:21,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 11:39:21,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states 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 11:39:21,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states 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 11:39:21,580 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 210 flow. Second operand 3 states and 631 transitions. [2023-08-27 11:39:21,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 350 flow [2023-08-27 11:39:21,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:39:21,584 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2023-08-27 11:39:21,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-08-27 11:39:21,584 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-27 11:39:21,585 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2023-08-27 11:39:21,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 11:39:21,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:21,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 11:39:21,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:21,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -222802891, now seen corresponding path program 1 times [2023-08-27 11:39:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260930757] [2023-08-27 11:39:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:21,632 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 11:39:21,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:21,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260930757] [2023-08-27 11:39:21,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260930757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:21,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:21,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:39:21,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593938155] [2023-08-27 11:39:21,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:21,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:39:21,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:39:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:39:21,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 397 [2023-08-27 11:39:21,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 11:39:21,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:21,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 397 [2023-08-27 11:39:21,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:30,621 INFO L124 PetriNetUnfolderBase]: 108221/151347 cut-off events. [2023-08-27 11:39:30,621 INFO L125 PetriNetUnfolderBase]: For 9069/9069 co-relation queries the response was YES. [2023-08-27 11:39:30,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315906 conditions, 151347 events. 108221/151347 cut-off events. For 9069/9069 co-relation queries the response was YES. Maximal size of possible extension queue 4112. Compared 1084516 event pairs, 50654 based on Foata normal form. 0/105269 useless extension candidates. Maximal degree in co-relation 315817. Up to 147209 conditions per place. [2023-08-27 11:39:31,290 INFO L140 encePairwiseOnDemand]: 386/397 looper letters, 93 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2023-08-27 11:39:31,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 485 flow [2023-08-27 11:39:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:39:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:39:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 707 transitions. [2023-08-27 11:39:31,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452141057934509 [2023-08-27 11:39:31,292 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 707 transitions. [2023-08-27 11:39:31,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 707 transitions. [2023-08-27 11:39:31,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:31,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 707 transitions. [2023-08-27 11:39:31,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 11:39:31,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 11:39:31,295 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 11:39:31,295 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 4 states and 707 transitions. [2023-08-27 11:39:31,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 485 flow [2023-08-27 11:39:31,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:39:31,311 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 253 flow [2023-08-27 11:39:31,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-08-27 11:39:31,313 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-27 11:39:31,313 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 253 flow [2023-08-27 11:39:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 11:39:31,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:31,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:31,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 11:39:31,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:31,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:31,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1458489912, now seen corresponding path program 1 times [2023-08-27 11:39:31,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:31,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435610527] [2023-08-27 11:39:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:31,334 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 11:39:31,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:31,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435610527] [2023-08-27 11:39:31,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435610527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:31,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824489026] [2023-08-27 11:39:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:31,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:31,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:31,336 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:39:31,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 11:39:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:31,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:39:31,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:31,442 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 11:39:31,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:39:31,453 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 11:39:31,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824489026] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:39:31,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:39:31,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:39:31,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188750266] [2023-08-27 11:39:31,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:39:31,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:31,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 397 [2023-08-27 11:39:31,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 11:39:31,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:31,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 397 [2023-08-27 11:39:31,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:34,082 INFO L124 PetriNetUnfolderBase]: 29862/45297 cut-off events. [2023-08-27 11:39:34,082 INFO L125 PetriNetUnfolderBase]: For 20148/20148 co-relation queries the response was YES. [2023-08-27 11:39:34,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113560 conditions, 45297 events. 29862/45297 cut-off events. For 20148/20148 co-relation queries the response was YES. Maximal size of possible extension queue 1600. Compared 338319 event pairs, 248 based on Foata normal form. 3010/37994 useless extension candidates. Maximal degree in co-relation 71037. Up to 21232 conditions per place. [2023-08-27 11:39:34,264 INFO L140 encePairwiseOnDemand]: 392/397 looper letters, 176 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2023-08-27 11:39:34,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 189 transitions, 924 flow [2023-08-27 11:39:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:39:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:39:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1401 transitions. [2023-08-27 11:39:34,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041381792011514 [2023-08-27 11:39:34,267 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1401 transitions. [2023-08-27 11:39:34,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1401 transitions. [2023-08-27 11:39:34,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:34,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1401 transitions. [2023-08-27 11:39:34,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states 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 11:39:34,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:39:34,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:39:34,271 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 253 flow. Second operand 7 states and 1401 transitions. [2023-08-27 11:39:34,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 189 transitions, 924 flow [2023-08-27 11:39:34,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 189 transitions, 874 flow, removed 25 selfloop flow, removed 1 redundant places. [2023-08-27 11:39:34,306 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 189 flow [2023-08-27 11:39:34,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2023-08-27 11:39:34,306 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2023-08-27 11:39:34,307 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 189 flow [2023-08-27 11:39:34,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 11:39:34,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:34,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:39:34,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 11:39:34,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:34,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:34,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:34,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2029877826, now seen corresponding path program 1 times [2023-08-27 11:39:34,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:34,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039007891] [2023-08-27 11:39:34,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:34,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:34,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:34,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039007891] [2023-08-27 11:39:34,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039007891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:34,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800321356] [2023-08-27 11:39:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:34,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:34,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:34,534 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:39:34,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 11:39:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:34,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:39:34,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:34,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:39:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800321356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:39:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 11:39:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63497320] [2023-08-27 11:39:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:34,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:39:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:39:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:39:34,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 397 [2023-08-27 11:39:34,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 11:39:34,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:34,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 397 [2023-08-27 11:39:34,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:36,456 INFO L124 PetriNetUnfolderBase]: 21703/31146 cut-off events. [2023-08-27 11:39:36,456 INFO L125 PetriNetUnfolderBase]: For 12407/12431 co-relation queries the response was YES. [2023-08-27 11:39:36,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73684 conditions, 31146 events. 21703/31146 cut-off events. For 12407/12431 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 201367 event pairs, 14334 based on Foata normal form. 0/25646 useless extension candidates. Maximal degree in co-relation 31134. Up to 30721 conditions per place. [2023-08-27 11:39:36,586 INFO L140 encePairwiseOnDemand]: 394/397 looper letters, 61 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-27 11:39:36,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 330 flow [2023-08-27 11:39:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:39:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:39:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 760 transitions. [2023-08-27 11:39:36,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47858942065491183 [2023-08-27 11:39:36,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 760 transitions. [2023-08-27 11:39:36,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 760 transitions. [2023-08-27 11:39:36,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:36,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 760 transitions. [2023-08-27 11:39:36,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 11:39:36,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 11:39:36,591 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 11:39:36,591 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 189 flow. Second operand 4 states and 760 transitions. [2023-08-27 11:39:36,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 330 flow [2023-08-27 11:39:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 321 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 11:39:36,593 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 172 flow [2023-08-27 11:39:36,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2023-08-27 11:39:36,594 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2023-08-27 11:39:36,594 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 172 flow [2023-08-27 11:39:36,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 11:39:36,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:36,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:36,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 11:39:36,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-27 11:39:36,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:36,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash 188445047, now seen corresponding path program 1 times [2023-08-27 11:39:36,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:36,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734468986] [2023-08-27 11:39:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:36,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:36,834 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 11:39:36,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734468986] [2023-08-27 11:39:36,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734468986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:36,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:36,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:39:36,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587807387] [2023-08-27 11:39:36,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:36,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:39:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:39:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:39:36,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 397 [2023-08-27 11:39:36,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 11:39:36,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:36,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 397 [2023-08-27 11:39:36,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:39,430 INFO L124 PetriNetUnfolderBase]: 33151/49601 cut-off events. [2023-08-27 11:39:39,430 INFO L125 PetriNetUnfolderBase]: For 9481/9481 co-relation queries the response was YES. [2023-08-27 11:39:39,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111899 conditions, 49601 events. 33151/49601 cut-off events. For 9481/9481 co-relation queries the response was YES. Maximal size of possible extension queue 1709. Compared 374360 event pairs, 13076 based on Foata normal form. 0/42606 useless extension candidates. Maximal degree in co-relation 111811. Up to 25718 conditions per place. [2023-08-27 11:39:39,643 INFO L140 encePairwiseOnDemand]: 380/397 looper letters, 79 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2023-08-27 11:39:39,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 488 flow [2023-08-27 11:39:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:39:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:39:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 551 transitions. [2023-08-27 11:39:39,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626364399664148 [2023-08-27 11:39:39,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 551 transitions. [2023-08-27 11:39:39,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 551 transitions. [2023-08-27 11:39:39,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:39,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 551 transitions. [2023-08-27 11:39:39,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 11:39:39,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states 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 11:39:39,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states 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 11:39:39,647 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 172 flow. Second operand 3 states and 551 transitions. [2023-08-27 11:39:39,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 488 flow [2023-08-27 11:39:39,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:39:39,655 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 307 flow [2023-08-27 11:39:39,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2023-08-27 11:39:39,655 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2023-08-27 11:39:39,655 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 307 flow [2023-08-27 11:39:39,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 11:39:39,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:39,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:39,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:39:39,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:39,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:39,656 INFO L85 PathProgramCache]: Analyzing trace with hash 188445019, now seen corresponding path program 1 times [2023-08-27 11:39:39,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:39,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832754710] [2023-08-27 11:39:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:39,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:39,748 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 11:39:39,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:39,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832754710] [2023-08-27 11:39:39,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832754710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:39,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:39,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:39:39,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014113266] [2023-08-27 11:39:39,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:39:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:39:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:39:39,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 397 [2023-08-27 11:39:39,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states 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 11:39:39,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:39,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 397 [2023-08-27 11:39:39,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:43,975 INFO L124 PetriNetUnfolderBase]: 42543/65282 cut-off events. [2023-08-27 11:39:43,975 INFO L125 PetriNetUnfolderBase]: For 50154/50154 co-relation queries the response was YES. [2023-08-27 11:39:44,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178959 conditions, 65282 events. 42543/65282 cut-off events. For 50154/50154 co-relation queries the response was YES. Maximal size of possible extension queue 2413. Compared 524707 event pairs, 10995 based on Foata normal form. 2039/67320 useless extension candidates. Maximal degree in co-relation 178869. Up to 41772 conditions per place. [2023-08-27 11:39:44,285 INFO L140 encePairwiseOnDemand]: 375/397 looper letters, 179 selfloop transitions, 47 changer transitions 0/232 dead transitions. [2023-08-27 11:39:44,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 232 transitions, 1395 flow [2023-08-27 11:39:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:39:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:39:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1189 transitions. [2023-08-27 11:39:44,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4278517452320979 [2023-08-27 11:39:44,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1189 transitions. [2023-08-27 11:39:44,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1189 transitions. [2023-08-27 11:39:44,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:44,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1189 transitions. [2023-08-27 11:39:44,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.85714285714286) internal successors, (1189), 7 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states 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 11:39:44,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:39:44,290 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:39:44,290 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 307 flow. Second operand 7 states and 1189 transitions. [2023-08-27 11:39:44,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 232 transitions, 1395 flow [2023-08-27 11:39:44,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 232 transitions, 1309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:39:44,357 INFO L231 Difference]: Finished difference. Result has 80 places, 113 transitions, 759 flow [2023-08-27 11:39:44,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=759, PETRI_PLACES=80, PETRI_TRANSITIONS=113} [2023-08-27 11:39:44,358 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-27 11:39:44,358 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 113 transitions, 759 flow [2023-08-27 11:39:44,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states 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 11:39:44,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:44,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:44,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 11:39:44,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:44,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1527955510, now seen corresponding path program 1 times [2023-08-27 11:39:44,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:44,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776950789] [2023-08-27 11:39:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:44,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:44,459 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 11:39:44,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:44,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776950789] [2023-08-27 11:39:44,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776950789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:44,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:44,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:39:44,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573722366] [2023-08-27 11:39:44,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:44,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:39:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:39:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:39:44,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 397 [2023-08-27 11:39:44,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 113 transitions, 759 flow. Second operand has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 11:39:44,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:44,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 397 [2023-08-27 11:39:44,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:48,728 INFO L124 PetriNetUnfolderBase]: 41034/62874 cut-off events. [2023-08-27 11:39:48,729 INFO L125 PetriNetUnfolderBase]: For 113580/113580 co-relation queries the response was YES. [2023-08-27 11:39:48,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210036 conditions, 62874 events. 41034/62874 cut-off events. For 113580/113580 co-relation queries the response was YES. Maximal size of possible extension queue 2247. Compared 503706 event pairs, 19789 based on Foata normal form. 1059/63920 useless extension candidates. Maximal degree in co-relation 209937. Up to 45345 conditions per place. [2023-08-27 11:39:49,093 INFO L140 encePairwiseOnDemand]: 381/397 looper letters, 140 selfloop transitions, 28 changer transitions 0/174 dead transitions. [2023-08-27 11:39:49,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 174 transitions, 1448 flow [2023-08-27 11:39:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:39:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:39:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 688 transitions. [2023-08-27 11:39:49,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332493702770781 [2023-08-27 11:39:49,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 688 transitions. [2023-08-27 11:39:49,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 688 transitions. [2023-08-27 11:39:49,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:49,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 688 transitions. [2023-08-27 11:39:49,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states 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 11:39:49,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 11:39:49,097 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 11:39:49,097 INFO L175 Difference]: Start difference. First operand has 80 places, 113 transitions, 759 flow. Second operand 4 states and 688 transitions. [2023-08-27 11:39:49,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 174 transitions, 1448 flow [2023-08-27 11:39:49,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 174 transitions, 1424 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 11:39:49,185 INFO L231 Difference]: Finished difference. Result has 84 places, 133 transitions, 1078 flow [2023-08-27 11:39:49,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1078, PETRI_PLACES=84, PETRI_TRANSITIONS=133} [2023-08-27 11:39:49,185 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-08-27 11:39:49,185 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 133 transitions, 1078 flow [2023-08-27 11:39:49,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 11:39:49,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:49,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:49,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 11:39:49,186 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:49,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:49,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1528124798, now seen corresponding path program 1 times [2023-08-27 11:39:49,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:49,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149476366] [2023-08-27 11:39:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:49,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:49,289 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 11:39:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:49,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149476366] [2023-08-27 11:39:49,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149476366] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:49,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071136254] [2023-08-27 11:39:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:49,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:49,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:49,293 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:39:49,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 11:39:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:49,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 11:39:49,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:49,424 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:39:49,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:39:49,449 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 14 treesize of output 16 [2023-08-27 11:39:49,510 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:39:49,542 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 14 treesize of output 16 [2023-08-27 11:39:49,555 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 11:39:49,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:39:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071136254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:49,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:39:49,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:39:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669733912] [2023-08-27 11:39:49,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:49,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:39:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:39:49,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:39:49,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 397 [2023-08-27 11:39:49,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 133 transitions, 1078 flow. Second operand has 6 states, 6 states have (on average 144.83333333333334) internal successors, (869), 6 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 11:39:49,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:49,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 397 [2023-08-27 11:39:49,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:54,056 INFO L124 PetriNetUnfolderBase]: 39975/61278 cut-off events. [2023-08-27 11:39:54,056 INFO L125 PetriNetUnfolderBase]: For 146345/146345 co-relation queries the response was YES. [2023-08-27 11:39:54,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216733 conditions, 61278 events. 39975/61278 cut-off events. For 146345/146345 co-relation queries the response was YES. Maximal size of possible extension queue 2167. Compared 481651 event pairs, 15643 based on Foata normal form. 172/61449 useless extension candidates. Maximal degree in co-relation 216629. Up to 56395 conditions per place. [2023-08-27 11:39:54,432 INFO L140 encePairwiseOnDemand]: 388/397 looper letters, 170 selfloop transitions, 20 changer transitions 0/196 dead transitions. [2023-08-27 11:39:54,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 196 transitions, 1821 flow [2023-08-27 11:39:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:39:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:39:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 810 transitions. [2023-08-27 11:39:54,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080604534005038 [2023-08-27 11:39:54,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 810 transitions. [2023-08-27 11:39:54,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 810 transitions. [2023-08-27 11:39:54,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:54,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 810 transitions. [2023-08-27 11:39:54,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:39:54,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 11:39:54,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 11:39:54,436 INFO L175 Difference]: Start difference. First operand has 84 places, 133 transitions, 1078 flow. Second operand 5 states and 810 transitions. [2023-08-27 11:39:54,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 196 transitions, 1821 flow [2023-08-27 11:39:56,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 196 transitions, 1810 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-27 11:39:56,734 INFO L231 Difference]: Finished difference. Result has 88 places, 144 transitions, 1265 flow [2023-08-27 11:39:56,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1265, PETRI_PLACES=88, PETRI_TRANSITIONS=144} [2023-08-27 11:39:56,735 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 15 predicate places. [2023-08-27 11:39:56,735 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 144 transitions, 1265 flow [2023-08-27 11:39:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.83333333333334) internal successors, (869), 6 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 11:39:56,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:56,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:56,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 11:39:56,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 11:39:56,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:39:56,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2065460177, now seen corresponding path program 1 times [2023-08-27 11:39:56,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:56,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257162737] [2023-08-27 11:39:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:56,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:57,027 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 11:39:57,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:57,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257162737] [2023-08-27 11:39:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257162737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:57,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269393336] [2023-08-27 11:39:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:57,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:57,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:57,029 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:39:57,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 11:39:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:57,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 11:39:57,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:57,145 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:39:57,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:39:57,159 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 14 treesize of output 16 [2023-08-27 11:39:57,180 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 14 treesize of output 16 [2023-08-27 11:39:57,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:39:57,246 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 11:39:57,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:39:57,314 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 11:39:57,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269393336] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:39:57,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:39:57,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 11:39:57,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291978577] [2023-08-27 11:39:57,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:39:57,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:39:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:57,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:39:57,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:39:57,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 397 [2023-08-27 11:39:57,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 144 transitions, 1265 flow. Second operand has 14 states, 14 states have (on average 145.78571428571428) internal successors, (2041), 14 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states 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 11:39:57,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:57,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 397 [2023-08-27 11:39:57,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:57,864 WARN L839 $PredicateComparison]: unable to prove that (and (= |c_t_funThread2of3ForFork0_#t~post6| 0) (forall ((v_ArrVal_962 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_962) c_~g1~0.base) c_~g1~0.offset))))) is different from false [2023-08-27 11:39:57,868 WARN L839 $PredicateComparison]: unable to prove that (and (< 0 (+ 2147483649 |c_t_funThread2of3ForFork0_#t~post6|)) (forall ((v_ArrVal_962 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_962) c_~g1~0.base) c_~g1~0.offset))))) is different from false [2023-08-27 11:40:04,520 INFO L124 PetriNetUnfolderBase]: 59009/90812 cut-off events. [2023-08-27 11:40:04,520 INFO L125 PetriNetUnfolderBase]: For 233540/233540 co-relation queries the response was YES. [2023-08-27 11:40:04,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321550 conditions, 90812 events. 59009/90812 cut-off events. For 233540/233540 co-relation queries the response was YES. Maximal size of possible extension queue 3570. Compared 762170 event pairs, 6265 based on Foata normal form. 3222/94033 useless extension candidates. Maximal degree in co-relation 321440. Up to 36250 conditions per place. [2023-08-27 11:40:05,300 INFO L140 encePairwiseOnDemand]: 364/397 looper letters, 473 selfloop transitions, 392 changer transitions 1/872 dead transitions. [2023-08-27 11:40:05,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 872 transitions, 7942 flow [2023-08-27 11:40:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 11:40:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 11:40:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3986 transitions. [2023-08-27 11:40:05,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4183459277917716 [2023-08-27 11:40:05,308 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3986 transitions. [2023-08-27 11:40:05,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3986 transitions. [2023-08-27 11:40:05,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:05,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3986 transitions. [2023-08-27 11:40:05,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 166.08333333333334) internal successors, (3986), 24 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states 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 11:40:05,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 397.0) internal successors, (9925), 25 states have internal predecessors, (9925), 0 states have call successors, (0), 0 states 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 11:40:05,319 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 397.0) internal successors, (9925), 25 states have internal predecessors, (9925), 0 states have call successors, (0), 0 states 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 11:40:05,319 INFO L175 Difference]: Start difference. First operand has 88 places, 144 transitions, 1265 flow. Second operand 24 states and 3986 transitions. [2023-08-27 11:40:05,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 872 transitions, 7942 flow [2023-08-27 11:40:11,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 872 transitions, 7783 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-08-27 11:40:11,513 INFO L231 Difference]: Finished difference. Result has 125 places, 532 transitions, 6440 flow [2023-08-27 11:40:11,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6440, PETRI_PLACES=125, PETRI_TRANSITIONS=532} [2023-08-27 11:40:11,514 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 52 predicate places. [2023-08-27 11:40:11,514 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 532 transitions, 6440 flow [2023-08-27 11:40:11,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 145.78571428571428) internal successors, (2041), 14 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states 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 11:40:11,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:11,514 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:11,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 11:40:11,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 11:40:11,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:11,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:11,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2075117068, now seen corresponding path program 1 times [2023-08-27 11:40:11,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:11,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317057150] [2023-08-27 11:40:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:11,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:11,789 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 11:40:11,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:11,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317057150] [2023-08-27 11:40:11,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317057150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:11,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:11,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:40:11,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779674529] [2023-08-27 11:40:11,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:11,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:40:11,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:40:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:40:11,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 397 [2023-08-27 11:40:11,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 532 transitions, 6440 flow. Second operand has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 11:40:11,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:11,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 397 [2023-08-27 11:40:11,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:12,073 INFO L124 PetriNetUnfolderBase]: 537/1584 cut-off events. [2023-08-27 11:40:12,074 INFO L125 PetriNetUnfolderBase]: For 9500/9504 co-relation queries the response was YES. [2023-08-27 11:40:12,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1584 events. 537/1584 cut-off events. For 9500/9504 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10729 event pairs, 147 based on Foata normal form. 604/2188 useless extension candidates. Maximal degree in co-relation 7555. Up to 1283 conditions per place. [2023-08-27 11:40:12,081 INFO L140 encePairwiseOnDemand]: 390/397 looper letters, 102 selfloop transitions, 7 changer transitions 0/115 dead transitions. [2023-08-27 11:40:12,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 115 transitions, 1357 flow [2023-08-27 11:40:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:40:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:40:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 655 transitions. [2023-08-27 11:40:12,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41246851385390426 [2023-08-27 11:40:12,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 655 transitions. [2023-08-27 11:40:12,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 655 transitions. [2023-08-27 11:40:12,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:12,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 655 transitions. [2023-08-27 11:40:12,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states 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 11:40:12,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 11:40:12,085 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 11:40:12,085 INFO L175 Difference]: Start difference. First operand has 125 places, 532 transitions, 6440 flow. Second operand 4 states and 655 transitions. [2023-08-27 11:40:12,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 115 transitions, 1357 flow [2023-08-27 11:40:12,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 115 transitions, 1145 flow, removed 76 selfloop flow, removed 13 redundant places. [2023-08-27 11:40:12,113 INFO L231 Difference]: Finished difference. Result has 102 places, 108 transitions, 890 flow [2023-08-27 11:40:12,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=890, PETRI_PLACES=102, PETRI_TRANSITIONS=108} [2023-08-27 11:40:12,114 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 29 predicate places. [2023-08-27 11:40:12,114 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 108 transitions, 890 flow [2023-08-27 11:40:12,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 11:40:12,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:12,114 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 11:40:12,114 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:12,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1997567958, now seen corresponding path program 1 times [2023-08-27 11:40:12,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048976786] [2023-08-27 11:40:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:40:12,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:12,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048976786] [2023-08-27 11:40:12,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048976786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:12,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390940729] [2023-08-27 11:40:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:12,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:12,225 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:12,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 11:40:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:12,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 11:40:12,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:12,359 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:12,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:12,378 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 14 treesize of output 16 [2023-08-27 11:40:12,399 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 14 treesize of output 16 [2023-08-27 11:40:12,423 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 14 treesize of output 16 [2023-08-27 11:40:12,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:40:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:40:12,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:40:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:40:12,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390940729] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:40:12,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:40:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 11:40:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062408217] [2023-08-27 11:40:12,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:40:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:40:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:40:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:40:12,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 397 [2023-08-27 11:40:12,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 890 flow. Second operand has 14 states, 14 states have (on average 150.0) internal successors, (2100), 14 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 11:40:12,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:12,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 397 [2023-08-27 11:40:12,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:13,070 INFO L124 PetriNetUnfolderBase]: 520/1532 cut-off events. [2023-08-27 11:40:13,071 INFO L125 PetriNetUnfolderBase]: For 4869/4869 co-relation queries the response was YES. [2023-08-27 11:40:13,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 1532 events. 520/1532 cut-off events. For 4869/4869 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10281 event pairs, 63 based on Foata normal form. 6/1537 useless extension candidates. Maximal degree in co-relation 6425. Up to 728 conditions per place. [2023-08-27 11:40:13,079 INFO L140 encePairwiseOnDemand]: 379/397 looper letters, 136 selfloop transitions, 56 changer transitions 3/201 dead transitions. [2023-08-27 11:40:13,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 201 transitions, 1897 flow [2023-08-27 11:40:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:40:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:40:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2192 transitions. [2023-08-27 11:40:13,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943864699532206 [2023-08-27 11:40:13,082 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2192 transitions. [2023-08-27 11:40:13,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2192 transitions. [2023-08-27 11:40:13,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:13,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2192 transitions. [2023-08-27 11:40:13,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 156.57142857142858) internal successors, (2192), 14 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states 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 11:40:13,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 397.0) internal successors, (5955), 15 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states 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 11:40:13,089 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 397.0) internal successors, (5955), 15 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states 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 11:40:13,089 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 890 flow. Second operand 14 states and 2192 transitions. [2023-08-27 11:40:13,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 201 transitions, 1897 flow [2023-08-27 11:40:13,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 201 transitions, 1855 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 11:40:13,102 INFO L231 Difference]: Finished difference. Result has 120 places, 132 transitions, 1336 flow [2023-08-27 11:40:13,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1336, PETRI_PLACES=120, PETRI_TRANSITIONS=132} [2023-08-27 11:40:13,102 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 47 predicate places. [2023-08-27 11:40:13,103 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 132 transitions, 1336 flow [2023-08-27 11:40:13,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 150.0) internal successors, (2100), 14 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 11:40:13,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:13,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:13,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 11:40:13,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 11:40:13,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:13,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1501119547, now seen corresponding path program 1 times [2023-08-27 11:40:13,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:13,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467719728] [2023-08-27 11:40:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:13,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:40:13,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:13,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467719728] [2023-08-27 11:40:13,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467719728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:13,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:13,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:40:13,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186668526] [2023-08-27 11:40:13,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:13,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:40:13,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:13,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:40:13,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:40:13,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 397 [2023-08-27 11:40:13,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 132 transitions, 1336 flow. Second operand has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states 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 11:40:13,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:13,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 397 [2023-08-27 11:40:13,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:13,597 INFO L124 PetriNetUnfolderBase]: 582/1708 cut-off events. [2023-08-27 11:40:13,597 INFO L125 PetriNetUnfolderBase]: For 8054/8054 co-relation queries the response was YES. [2023-08-27 11:40:13,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7865 conditions, 1708 events. 582/1708 cut-off events. For 8054/8054 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11738 event pairs, 206 based on Foata normal form. 15/1722 useless extension candidates. Maximal degree in co-relation 7731. Up to 803 conditions per place. [2023-08-27 11:40:13,604 INFO L140 encePairwiseOnDemand]: 381/397 looper letters, 110 selfloop transitions, 59 changer transitions 0/175 dead transitions. [2023-08-27 11:40:13,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 175 transitions, 1969 flow [2023-08-27 11:40:13,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:40:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:40:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 823 transitions. [2023-08-27 11:40:13,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146095717884131 [2023-08-27 11:40:13,606 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 823 transitions. [2023-08-27 11:40:13,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 823 transitions. [2023-08-27 11:40:13,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:13,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 823 transitions. [2023-08-27 11:40:13,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 11:40:13,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 11:40:13,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 11:40:13,609 INFO L175 Difference]: Start difference. First operand has 120 places, 132 transitions, 1336 flow. Second operand 5 states and 823 transitions. [2023-08-27 11:40:13,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 175 transitions, 1969 flow [2023-08-27 11:40:13,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 175 transitions, 1941 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-08-27 11:40:13,624 INFO L231 Difference]: Finished difference. Result has 127 places, 142 transitions, 1682 flow [2023-08-27 11:40:13,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1682, PETRI_PLACES=127, PETRI_TRANSITIONS=142} [2023-08-27 11:40:13,624 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 54 predicate places. [2023-08-27 11:40:13,624 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 142 transitions, 1682 flow [2023-08-27 11:40:13,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states 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 11:40:13,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:13,625 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:13,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 11:40:13,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:13,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1403871300, now seen corresponding path program 1 times [2023-08-27 11:40:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:13,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119329564] [2023-08-27 11:40:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:13,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:40:13,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119329564] [2023-08-27 11:40:13,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119329564] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88408893] [2023-08-27 11:40:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:13,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:13,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:13,785 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:13,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 11:40:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:13,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:13,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:13,900 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:13,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:13,940 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 11:40:13,982 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:40:14,010 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 14 treesize of output 16 [2023-08-27 11:40:14,030 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 11:40:14,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:40:14,067 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1104 (Array Int Int)) (v_ArrVal_1102 Int)) (or (< (select (select (store (store |c_#memory_int| c_~g1~0.base (store (select |c_#memory_int| c_~g1~0.base) c_~g1~0.offset v_ArrVal_1102)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1104) c_~g1~0.base) c_~g1~0.offset) 2147483647) (< |c_t_funThread1of3ForFork0_#t~post9| (+ v_ArrVal_1102 1)))) is different from false [2023-08-27 11:40:14,074 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1104 (Array Int Int)) (v_ArrVal_1102 Int)) (let ((.cse0 (select |c_#memory_int| c_~g1~0.base))) (or (< (select (select (store (store |c_#memory_int| c_~g1~0.base (store .cse0 c_~g1~0.offset v_ArrVal_1102)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1104) c_~g1~0.base) c_~g1~0.offset) 2147483647) (< (select .cse0 c_~g1~0.offset) (+ v_ArrVal_1102 1))))) is different from false [2023-08-27 11:40:14,091 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:40:14,091 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-27 11:40:14,094 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 29 treesize of output 21 [2023-08-27 11:40:14,114 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 11:40:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88408893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:40:14,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:40:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-27 11:40:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640411036] [2023-08-27 11:40:14,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:40:14,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:40:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:40:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=181, Unknown=3, NotChecked=58, Total=306 [2023-08-27 11:40:14,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 397 [2023-08-27 11:40:14,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 142 transitions, 1682 flow. Second operand has 18 states, 18 states have (on average 140.0) internal successors, (2520), 18 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:40:14,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:14,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 397 [2023-08-27 11:40:14,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:14,664 INFO L124 PetriNetUnfolderBase]: 573/1682 cut-off events. [2023-08-27 11:40:14,664 INFO L125 PetriNetUnfolderBase]: For 12235/12235 co-relation queries the response was YES. [2023-08-27 11:40:14,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8493 conditions, 1682 events. 573/1682 cut-off events. For 12235/12235 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11482 event pairs, 134 based on Foata normal form. 28/1709 useless extension candidates. Maximal degree in co-relation 8348. Up to 544 conditions per place. [2023-08-27 11:40:14,671 INFO L140 encePairwiseOnDemand]: 379/397 looper letters, 186 selfloop transitions, 48 changer transitions 0/240 dead transitions. [2023-08-27 11:40:14,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 240 transitions, 2932 flow [2023-08-27 11:40:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:40:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:40:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2188 transitions. [2023-08-27 11:40:14,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3674223341729639 [2023-08-27 11:40:14,674 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2188 transitions. [2023-08-27 11:40:14,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2188 transitions. [2023-08-27 11:40:14,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:14,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2188 transitions. [2023-08-27 11:40:14,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.86666666666667) internal successors, (2188), 15 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states 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 11:40:14,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 397.0) internal successors, (6352), 16 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states 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 11:40:14,681 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 397.0) internal successors, (6352), 16 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states 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 11:40:14,681 INFO L175 Difference]: Start difference. First operand has 127 places, 142 transitions, 1682 flow. Second operand 15 states and 2188 transitions. [2023-08-27 11:40:14,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 240 transitions, 2932 flow [2023-08-27 11:40:14,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 240 transitions, 2916 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-27 11:40:14,706 INFO L231 Difference]: Finished difference. Result has 144 places, 150 transitions, 1935 flow [2023-08-27 11:40:14,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1935, PETRI_PLACES=144, PETRI_TRANSITIONS=150} [2023-08-27 11:40:14,707 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 71 predicate places. [2023-08-27 11:40:14,707 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 150 transitions, 1935 flow [2023-08-27 11:40:14,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 140.0) internal successors, (2520), 18 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:40:14,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:14,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:14,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-27 11:40:14,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-08-27 11:40:14,912 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:14,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1403871299, now seen corresponding path program 2 times [2023-08-27 11:40:14,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:14,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619012132] [2023-08-27 11:40:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:14,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:40:15,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:15,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619012132] [2023-08-27 11:40:15,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619012132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:15,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628161455] [2023-08-27 11:40:15,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:40:15,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:15,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:15,093 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:15,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 11:40:15,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:40:15,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:40:15,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:15,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:15,252 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:15,252 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:15,293 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 11:40:15,343 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:40:15,374 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:40:15,400 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 11:40:15,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:40:15,451 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1159 Int) (v_ArrVal_1161 (Array Int Int))) (or (< (+ v_ArrVal_1159 1) |c_t_funThread1of3ForFork0_#t~post9|) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~g1~0.base (store (select |c_#memory_int| c_~g1~0.base) c_~g1~0.offset v_ArrVal_1159)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1161) c_~g1~0.base) c_~g1~0.offset))))) is different from false [2023-08-27 11:40:15,460 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1159 Int) (v_ArrVal_1161 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~g1~0.base))) (or (< (+ v_ArrVal_1159 1) (select .cse0 c_~g1~0.offset)) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~g1~0.base (store .cse0 c_~g1~0.offset v_ArrVal_1159)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1161) c_~g1~0.base) c_~g1~0.offset)))))) is different from false [2023-08-27 11:40:15,477 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:40:15,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-27 11:40:15,480 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 33 treesize of output 25 [2023-08-27 11:40:15,518 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 11:40:15,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628161455] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:40:15,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:40:15,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 11:40:15,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394557034] [2023-08-27 11:40:15,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:40:15,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 11:40:15,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 11:40:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=231, Unknown=2, NotChecked=66, Total=380 [2023-08-27 11:40:15,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 397 [2023-08-27 11:40:15,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 150 transitions, 1935 flow. Second operand has 20 states, 20 states have (on average 139.7) internal successors, (2794), 20 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states 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 11:40:15,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:15,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 397 [2023-08-27 11:40:15,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:16,086 INFO L124 PetriNetUnfolderBase]: 563/1655 cut-off events. [2023-08-27 11:40:16,087 INFO L125 PetriNetUnfolderBase]: For 13295/13295 co-relation queries the response was YES. [2023-08-27 11:40:16,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8648 conditions, 1655 events. 563/1655 cut-off events. For 13295/13295 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11193 event pairs, 124 based on Foata normal form. 15/1669 useless extension candidates. Maximal degree in co-relation 8491. Up to 526 conditions per place. [2023-08-27 11:40:16,094 INFO L140 encePairwiseOnDemand]: 380/397 looper letters, 178 selfloop transitions, 51 changer transitions 0/235 dead transitions. [2023-08-27 11:40:16,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 235 transitions, 2955 flow [2023-08-27 11:40:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:40:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:40:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2184 transitions. [2023-08-27 11:40:16,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36675062972292194 [2023-08-27 11:40:16,098 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2184 transitions. [2023-08-27 11:40:16,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2184 transitions. [2023-08-27 11:40:16,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:16,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2184 transitions. [2023-08-27 11:40:16,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.6) internal successors, (2184), 15 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 11:40:16,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 397.0) internal successors, (6352), 16 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states 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 11:40:16,105 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 397.0) internal successors, (6352), 16 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states 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 11:40:16,105 INFO L175 Difference]: Start difference. First operand has 144 places, 150 transitions, 1935 flow. Second operand 15 states and 2184 transitions. [2023-08-27 11:40:16,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 235 transitions, 2955 flow [2023-08-27 11:40:16,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 235 transitions, 2900 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-27 11:40:16,136 INFO L231 Difference]: Finished difference. Result has 151 places, 146 transitions, 1922 flow [2023-08-27 11:40:16,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1922, PETRI_PLACES=151, PETRI_TRANSITIONS=146} [2023-08-27 11:40:16,137 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 78 predicate places. [2023-08-27 11:40:16,137 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 146 transitions, 1922 flow [2023-08-27 11:40:16,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 139.7) internal successors, (2794), 20 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states 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 11:40:16,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:16,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:16,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 11:40:16,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:16,343 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:16,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1900960643, now seen corresponding path program 1 times [2023-08-27 11:40:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901949468] [2023-08-27 11:40:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:40:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901949468] [2023-08-27 11:40:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901949468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:16,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:16,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:40:16,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497008007] [2023-08-27 11:40:16,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:16,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:40:16,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:40:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:40:16,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 397 [2023-08-27 11:40:16,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 1922 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 11:40:16,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:16,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 397 [2023-08-27 11:40:16,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:16,677 INFO L124 PetriNetUnfolderBase]: 611/1791 cut-off events. [2023-08-27 11:40:16,677 INFO L125 PetriNetUnfolderBase]: For 14889/14889 co-relation queries the response was YES. [2023-08-27 11:40:16,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9377 conditions, 1791 events. 611/1791 cut-off events. For 14889/14889 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12425 event pairs, 220 based on Foata normal form. 15/1805 useless extension candidates. Maximal degree in co-relation 9219. Up to 920 conditions per place. [2023-08-27 11:40:16,684 INFO L140 encePairwiseOnDemand]: 382/397 looper letters, 102 selfloop transitions, 73 changer transitions 0/181 dead transitions. [2023-08-27 11:40:16,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 181 transitions, 2524 flow [2023-08-27 11:40:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:40:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:40:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 820 transitions. [2023-08-27 11:40:16,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41309823677581864 [2023-08-27 11:40:16,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 820 transitions. [2023-08-27 11:40:16,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 820 transitions. [2023-08-27 11:40:16,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:16,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 820 transitions. [2023-08-27 11:40:16,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:40:16,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 11:40:16,688 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 11:40:16,688 INFO L175 Difference]: Start difference. First operand has 151 places, 146 transitions, 1922 flow. Second operand 5 states and 820 transitions. [2023-08-27 11:40:16,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 181 transitions, 2524 flow [2023-08-27 11:40:16,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 181 transitions, 2381 flow, removed 11 selfloop flow, removed 14 redundant places. [2023-08-27 11:40:16,711 INFO L231 Difference]: Finished difference. Result has 143 places, 151 transitions, 2161 flow [2023-08-27 11:40:16,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2161, PETRI_PLACES=143, PETRI_TRANSITIONS=151} [2023-08-27 11:40:16,711 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 70 predicate places. [2023-08-27 11:40:16,711 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 151 transitions, 2161 flow [2023-08-27 11:40:16,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 11:40:16,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:16,712 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:16,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-27 11:40:16,712 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:16,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1900960700, now seen corresponding path program 1 times [2023-08-27 11:40:16,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:16,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461286383] [2023-08-27 11:40:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:40:16,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461286383] [2023-08-27 11:40:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461286383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:16,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:16,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:40:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456963288] [2023-08-27 11:40:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:40:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:40:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:40:16,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 397 [2023-08-27 11:40:16,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 151 transitions, 2161 flow. Second operand has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states 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 11:40:16,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:16,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 397 [2023-08-27 11:40:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:17,064 INFO L124 PetriNetUnfolderBase]: 648/1896 cut-off events. [2023-08-27 11:40:17,064 INFO L125 PetriNetUnfolderBase]: For 18611/18611 co-relation queries the response was YES. [2023-08-27 11:40:17,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10170 conditions, 1896 events. 648/1896 cut-off events. For 18611/18611 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13391 event pairs, 220 based on Foata normal form. 15/1910 useless extension candidates. Maximal degree in co-relation 10015. Up to 956 conditions per place. [2023-08-27 11:40:17,072 INFO L140 encePairwiseOnDemand]: 381/397 looper letters, 123 selfloop transitions, 72 changer transitions 0/201 dead transitions. [2023-08-27 11:40:17,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 201 transitions, 2962 flow [2023-08-27 11:40:17,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:40:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:40:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1127 transitions. [2023-08-27 11:40:17,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40554156171284633 [2023-08-27 11:40:17,074 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1127 transitions. [2023-08-27 11:40:17,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1127 transitions. [2023-08-27 11:40:17,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:17,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1127 transitions. [2023-08-27 11:40:17,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states 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 11:40:17,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:40:17,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:40:17,078 INFO L175 Difference]: Start difference. First operand has 143 places, 151 transitions, 2161 flow. Second operand 7 states and 1127 transitions. [2023-08-27 11:40:17,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 201 transitions, 2962 flow [2023-08-27 11:40:17,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 201 transitions, 2935 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-27 11:40:17,109 INFO L231 Difference]: Finished difference. Result has 150 places, 160 transitions, 2487 flow [2023-08-27 11:40:17,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2487, PETRI_PLACES=150, PETRI_TRANSITIONS=160} [2023-08-27 11:40:17,109 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 77 predicate places. [2023-08-27 11:40:17,109 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 160 transitions, 2487 flow [2023-08-27 11:40:17,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states 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 11:40:17,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:17,109 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:17,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-27 11:40:17,110 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:17,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1829074513, now seen corresponding path program 2 times [2023-08-27 11:40:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936870155] [2023-08-27 11:40:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:17,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:17,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936870155] [2023-08-27 11:40:17,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936870155] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:17,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474832019] [2023-08-27 11:40:17,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:40:17,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:17,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:17,284 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:17,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 11:40:17,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:40:17,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:40:17,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:17,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:17,432 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:17,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:17,475 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 11:40:17,501 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 14 treesize of output 16 [2023-08-27 11:40:17,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:40:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:17,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:40:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474832019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:40:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-27 11:40:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072370340] [2023-08-27 11:40:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:17,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:40:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:40:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:40:17,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 397 [2023-08-27 11:40:17,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 160 transitions, 2487 flow. Second operand has 7 states, 7 states have (on average 145.71428571428572) internal successors, (1020), 7 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 11:40:17,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:17,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 397 [2023-08-27 11:40:17,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:17,854 INFO L124 PetriNetUnfolderBase]: 633/1860 cut-off events. [2023-08-27 11:40:17,855 INFO L125 PetriNetUnfolderBase]: For 20940/20940 co-relation queries the response was YES. [2023-08-27 11:40:17,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10236 conditions, 1860 events. 633/1860 cut-off events. For 20940/20940 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13126 event pairs, 269 based on Foata normal form. 22/1881 useless extension candidates. Maximal degree in co-relation 10073. Up to 633 conditions per place. [2023-08-27 11:40:17,863 INFO L140 encePairwiseOnDemand]: 385/397 looper letters, 131 selfloop transitions, 47 changer transitions 0/184 dead transitions. [2023-08-27 11:40:17,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 184 transitions, 2896 flow [2023-08-27 11:40:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:40:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:40:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1075 transitions. [2023-08-27 11:40:17,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38682979489024827 [2023-08-27 11:40:17,864 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1075 transitions. [2023-08-27 11:40:17,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1075 transitions. [2023-08-27 11:40:17,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:17,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1075 transitions. [2023-08-27 11:40:17,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.57142857142858) internal successors, (1075), 7 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 11:40:17,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:40:17,868 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:40:17,868 INFO L175 Difference]: Start difference. First operand has 150 places, 160 transitions, 2487 flow. Second operand 7 states and 1075 transitions. [2023-08-27 11:40:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 184 transitions, 2896 flow [2023-08-27 11:40:17,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 184 transitions, 2848 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-08-27 11:40:17,904 INFO L231 Difference]: Finished difference. Result has 152 places, 154 transitions, 2398 flow [2023-08-27 11:40:17,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2398, PETRI_PLACES=152, PETRI_TRANSITIONS=154} [2023-08-27 11:40:17,905 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 79 predicate places. [2023-08-27 11:40:17,905 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 154 transitions, 2398 flow [2023-08-27 11:40:17,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.71428571428572) internal successors, (1020), 7 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 11:40:17,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:17,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:17,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 11:40:18,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:18,110 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:18,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2072223402, now seen corresponding path program 2 times [2023-08-27 11:40:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:18,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52450674] [2023-08-27 11:40:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:18,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:18,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:18,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52450674] [2023-08-27 11:40:18,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52450674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:18,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342297868] [2023-08-27 11:40:18,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:40:18,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:18,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:18,280 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:18,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 11:40:18,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:40:18,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:40:18,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:18,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:18,403 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:18,403 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:18,439 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 11:40:18,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:40:18,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:40:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:18,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:40:18,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342297868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:18,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:40:18,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-27 11:40:18,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408853412] [2023-08-27 11:40:18,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:18,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:40:18,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:40:18,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:40:18,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 397 [2023-08-27 11:40:18,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 2398 flow. Second operand has 7 states, 7 states have (on average 145.71428571428572) internal successors, (1020), 7 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 11:40:18,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:18,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 397 [2023-08-27 11:40:18,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:18,772 INFO L124 PetriNetUnfolderBase]: 629/1836 cut-off events. [2023-08-27 11:40:18,772 INFO L125 PetriNetUnfolderBase]: For 20648/20648 co-relation queries the response was YES. [2023-08-27 11:40:18,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10118 conditions, 1836 events. 629/1836 cut-off events. For 20648/20648 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12825 event pairs, 266 based on Foata normal form. 11/1846 useless extension candidates. Maximal degree in co-relation 9955. Up to 639 conditions per place. [2023-08-27 11:40:18,780 INFO L140 encePairwiseOnDemand]: 386/397 looper letters, 123 selfloop transitions, 47 changer transitions 0/176 dead transitions. [2023-08-27 11:40:18,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 176 transitions, 2847 flow [2023-08-27 11:40:18,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:40:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:40:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 926 transitions. [2023-08-27 11:40:18,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887489504617968 [2023-08-27 11:40:18,782 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 926 transitions. [2023-08-27 11:40:18,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 926 transitions. [2023-08-27 11:40:18,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:18,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 926 transitions. [2023-08-27 11:40:18,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 11:40:18,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states 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 11:40:18,785 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states 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 11:40:18,785 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 2398 flow. Second operand 6 states and 926 transitions. [2023-08-27 11:40:18,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 176 transitions, 2847 flow [2023-08-27 11:40:18,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 176 transitions, 2738 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 11:40:18,819 INFO L231 Difference]: Finished difference. Result has 148 places, 152 transitions, 2349 flow [2023-08-27 11:40:18,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2349, PETRI_PLACES=148, PETRI_TRANSITIONS=152} [2023-08-27 11:40:18,820 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 75 predicate places. [2023-08-27 11:40:18,820 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 152 transitions, 2349 flow [2023-08-27 11:40:18,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.71428571428572) internal successors, (1020), 7 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 11:40:18,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:18,820 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:18,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 11:40:19,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:19,020 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:19,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1250344173, now seen corresponding path program 1 times [2023-08-27 11:40:19,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:19,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684802017] [2023-08-27 11:40:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:19,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:40:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684802017] [2023-08-27 11:40:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684802017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:19,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:40:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887682627] [2023-08-27 11:40:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:40:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:40:19,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:40:19,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 397 [2023-08-27 11:40:19,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 152 transitions, 2349 flow. Second operand has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states 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 11:40:19,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:19,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 397 [2023-08-27 11:40:19,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:19,380 INFO L124 PetriNetUnfolderBase]: 625/1858 cut-off events. [2023-08-27 11:40:19,381 INFO L125 PetriNetUnfolderBase]: For 19450/19450 co-relation queries the response was YES. [2023-08-27 11:40:19,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 1858 events. 625/1858 cut-off events. For 19450/19450 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13176 event pairs, 306 based on Foata normal form. 12/1869 useless extension candidates. Maximal degree in co-relation 10071. Up to 1079 conditions per place. [2023-08-27 11:40:19,389 INFO L140 encePairwiseOnDemand]: 382/397 looper letters, 112 selfloop transitions, 74 changer transitions 0/192 dead transitions. [2023-08-27 11:40:19,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 192 transitions, 3043 flow [2023-08-27 11:40:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:40:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:40:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1119 transitions. [2023-08-27 11:40:19,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026628283555236 [2023-08-27 11:40:19,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1119 transitions. [2023-08-27 11:40:19,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1119 transitions. [2023-08-27 11:40:19,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:19,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1119 transitions. [2023-08-27 11:40:19,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states 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 11:40:19,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:40:19,393 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:40:19,393 INFO L175 Difference]: Start difference. First operand has 148 places, 152 transitions, 2349 flow. Second operand 7 states and 1119 transitions. [2023-08-27 11:40:19,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 192 transitions, 3043 flow [2023-08-27 11:40:19,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 192 transitions, 2962 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-27 11:40:19,417 INFO L231 Difference]: Finished difference. Result has 149 places, 161 transitions, 2641 flow [2023-08-27 11:40:19,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2641, PETRI_PLACES=149, PETRI_TRANSITIONS=161} [2023-08-27 11:40:19,418 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 76 predicate places. [2023-08-27 11:40:19,418 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 161 transitions, 2641 flow [2023-08-27 11:40:19,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states 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 11:40:19,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:19,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:19,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-27 11:40:19,418 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:19,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:19,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1308640838, now seen corresponding path program 1 times [2023-08-27 11:40:19,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:19,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922290661] [2023-08-27 11:40:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:19,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:40:19,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922290661] [2023-08-27 11:40:19,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922290661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:19,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:19,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:40:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84078369] [2023-08-27 11:40:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:19,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:40:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:19,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:40:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:40:19,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 397 [2023-08-27 11:40:19,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 161 transitions, 2641 flow. Second operand has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states 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 11:40:19,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:19,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 397 [2023-08-27 11:40:19,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:19,887 INFO L124 PetriNetUnfolderBase]: 645/1909 cut-off events. [2023-08-27 11:40:19,887 INFO L125 PetriNetUnfolderBase]: For 22924/22924 co-relation queries the response was YES. [2023-08-27 11:40:19,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10829 conditions, 1909 events. 645/1909 cut-off events. For 22924/22924 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13534 event pairs, 257 based on Foata normal form. 9/1917 useless extension candidates. Maximal degree in co-relation 10662. Up to 949 conditions per place. [2023-08-27 11:40:19,895 INFO L140 encePairwiseOnDemand]: 381/397 looper letters, 117 selfloop transitions, 95 changer transitions 1/219 dead transitions. [2023-08-27 11:40:19,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 219 transitions, 3524 flow [2023-08-27 11:40:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:40:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:40:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1513 transitions. [2023-08-27 11:40:19,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38110831234256926 [2023-08-27 11:40:19,897 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1513 transitions. [2023-08-27 11:40:19,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1513 transitions. [2023-08-27 11:40:19,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:19,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1513 transitions. [2023-08-27 11:40:19,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.3) internal successors, (1513), 10 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:40:19,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 397.0) internal successors, (4367), 11 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states 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 11:40:19,900 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 397.0) internal successors, (4367), 11 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states 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 11:40:19,900 INFO L175 Difference]: Start difference. First operand has 149 places, 161 transitions, 2641 flow. Second operand 10 states and 1513 transitions. [2023-08-27 11:40:19,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 219 transitions, 3524 flow [2023-08-27 11:40:19,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 219 transitions, 3482 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-27 11:40:19,927 INFO L231 Difference]: Finished difference. Result has 162 places, 170 transitions, 3048 flow [2023-08-27 11:40:19,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3048, PETRI_PLACES=162, PETRI_TRANSITIONS=170} [2023-08-27 11:40:19,927 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 89 predicate places. [2023-08-27 11:40:19,928 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 170 transitions, 3048 flow [2023-08-27 11:40:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states 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 11:40:19,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:19,928 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:19,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-27 11:40:19,928 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:19,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:19,928 INFO L85 PathProgramCache]: Analyzing trace with hash 645736873, now seen corresponding path program 1 times [2023-08-27 11:40:19,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:19,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445027337] [2023-08-27 11:40:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:19,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:40:19,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445027337] [2023-08-27 11:40:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445027337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:19,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:19,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:40:19,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631181945] [2023-08-27 11:40:19,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:19,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:40:19,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:40:19,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:40:19,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 397 [2023-08-27 11:40:19,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 170 transitions, 3048 flow. Second operand has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states 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 11:40:19,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:19,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 397 [2023-08-27 11:40:19,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:20,317 INFO L124 PetriNetUnfolderBase]: 649/1928 cut-off events. [2023-08-27 11:40:20,317 INFO L125 PetriNetUnfolderBase]: For 25740/25740 co-relation queries the response was YES. [2023-08-27 11:40:20,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11498 conditions, 1928 events. 649/1928 cut-off events. For 25740/25740 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 13740 event pairs, 202 based on Foata normal form. 12/1939 useless extension candidates. Maximal degree in co-relation 11320. Up to 868 conditions per place. [2023-08-27 11:40:20,326 INFO L140 encePairwiseOnDemand]: 382/397 looper letters, 113 selfloop transitions, 85 changer transitions 18/222 dead transitions. [2023-08-27 11:40:20,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 222 transitions, 3909 flow [2023-08-27 11:40:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:40:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:40:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1365 transitions. [2023-08-27 11:40:20,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382031905961377 [2023-08-27 11:40:20,328 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1365 transitions. [2023-08-27 11:40:20,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1365 transitions. [2023-08-27 11:40:20,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:20,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1365 transitions. [2023-08-27 11:40:20,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states 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 11:40:20,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states 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 11:40:20,331 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states 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 11:40:20,331 INFO L175 Difference]: Start difference. First operand has 162 places, 170 transitions, 3048 flow. Second operand 9 states and 1365 transitions. [2023-08-27 11:40:20,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 222 transitions, 3909 flow [2023-08-27 11:40:20,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 222 transitions, 3703 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-08-27 11:40:20,367 INFO L231 Difference]: Finished difference. Result has 169 places, 166 transitions, 2984 flow [2023-08-27 11:40:20,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2984, PETRI_PLACES=169, PETRI_TRANSITIONS=166} [2023-08-27 11:40:20,367 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 96 predicate places. [2023-08-27 11:40:20,367 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 166 transitions, 2984 flow [2023-08-27 11:40:20,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states 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 11:40:20,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:20,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-27 11:40:20,368 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:20,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:20,368 INFO L85 PathProgramCache]: Analyzing trace with hash -103054276, now seen corresponding path program 2 times [2023-08-27 11:40:20,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:20,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430285993] [2023-08-27 11:40:20,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:20,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:40:20,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:20,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430285993] [2023-08-27 11:40:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430285993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301934658] [2023-08-27 11:40:20,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:40:20,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:20,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:20,578 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:20,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 11:40:20,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:40:20,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:40:20,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:20,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:20,707 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:20,708 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:20,758 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 11:40:20,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:40:20,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:40:20,848 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 11:40:20,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:40:20,889 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1494 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1494) c_~g1~0.base) c_~g1~0.offset) 2147483649))) is different from false [2023-08-27 11:40:20,898 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:40:20,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-27 11:40:20,900 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 35 treesize of output 27 [2023-08-27 11:40:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:40:20,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301934658] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:40:20,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:40:20,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-08-27 11:40:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260938648] [2023-08-27 11:40:20,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:40:20,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 11:40:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 11:40:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=341, Unknown=1, NotChecked=38, Total=462 [2023-08-27 11:40:20,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 397 [2023-08-27 11:40:20,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 166 transitions, 2984 flow. Second operand has 22 states, 22 states have (on average 134.0) internal successors, (2948), 22 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states 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 11:40:20,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:20,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 397 [2023-08-27 11:40:20,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:21,699 INFO L124 PetriNetUnfolderBase]: 628/1866 cut-off events. [2023-08-27 11:40:21,699 INFO L125 PetriNetUnfolderBase]: For 25946/25946 co-relation queries the response was YES. [2023-08-27 11:40:21,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11271 conditions, 1866 events. 628/1866 cut-off events. For 25946/25946 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13142 event pairs, 143 based on Foata normal form. 14/1879 useless extension candidates. Maximal degree in co-relation 11087. Up to 477 conditions per place. [2023-08-27 11:40:21,710 INFO L140 encePairwiseOnDemand]: 382/397 looper letters, 177 selfloop transitions, 60 changer transitions 24/267 dead transitions. [2023-08-27 11:40:21,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 267 transitions, 4380 flow [2023-08-27 11:40:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 11:40:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 11:40:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2749 transitions. [2023-08-27 11:40:21,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3462216624685139 [2023-08-27 11:40:21,713 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2749 transitions. [2023-08-27 11:40:21,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2749 transitions. [2023-08-27 11:40:21,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:21,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2749 transitions. [2023-08-27 11:40:21,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.45) internal successors, (2749), 20 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states 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 11:40:21,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 397.0) internal successors, (8337), 21 states have internal predecessors, (8337), 0 states have call successors, (0), 0 states 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 11:40:21,720 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 397.0) internal successors, (8337), 21 states have internal predecessors, (8337), 0 states have call successors, (0), 0 states 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 11:40:21,720 INFO L175 Difference]: Start difference. First operand has 169 places, 166 transitions, 2984 flow. Second operand 20 states and 2749 transitions. [2023-08-27 11:40:21,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 267 transitions, 4380 flow [2023-08-27 11:40:21,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 267 transitions, 4157 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-27 11:40:21,757 INFO L231 Difference]: Finished difference. Result has 179 places, 153 transitions, 2578 flow [2023-08-27 11:40:21,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2578, PETRI_PLACES=179, PETRI_TRANSITIONS=153} [2023-08-27 11:40:21,757 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 106 predicate places. [2023-08-27 11:40:21,757 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 153 transitions, 2578 flow [2023-08-27 11:40:21,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 134.0) internal successors, (2948), 22 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states 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 11:40:21,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:21,758 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 11:40:21,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 11:40:21,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:21,958 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:21,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2051234012, now seen corresponding path program 2 times [2023-08-27 11:40:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762927692] [2023-08-27 11:40:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:22,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:22,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762927692] [2023-08-27 11:40:22,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762927692] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:22,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874004589] [2023-08-27 11:40:22,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:40:22,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:22,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:22,173 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:22,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 11:40:22,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:40:22,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:40:22,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:22,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:22,310 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:22,310 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:22,367 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 11:40:22,422 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:40:22,444 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:40:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:22,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:40:22,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874004589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:22,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:40:22,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-27 11:40:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386643967] [2023-08-27 11:40:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:40:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:40:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-08-27 11:40:22,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 397 [2023-08-27 11:40:22,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 153 transitions, 2578 flow. Second operand has 8 states, 8 states have (on average 139.75) internal successors, (1118), 8 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states 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 11:40:22,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:22,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 397 [2023-08-27 11:40:22,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:22,765 INFO L124 PetriNetUnfolderBase]: 600/1762 cut-off events. [2023-08-27 11:40:22,765 INFO L125 PetriNetUnfolderBase]: For 23141/23141 co-relation queries the response was YES. [2023-08-27 11:40:22,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10439 conditions, 1762 events. 600/1762 cut-off events. For 23141/23141 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12292 event pairs, 213 based on Foata normal form. 12/1773 useless extension candidates. Maximal degree in co-relation 10255. Up to 762 conditions per place. [2023-08-27 11:40:22,774 INFO L140 encePairwiseOnDemand]: 386/397 looper letters, 123 selfloop transitions, 45 changer transitions 11/185 dead transitions. [2023-08-27 11:40:22,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 185 transitions, 3113 flow [2023-08-27 11:40:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:40:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:40:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1172 transitions. [2023-08-27 11:40:22,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3690176322418136 [2023-08-27 11:40:22,775 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1172 transitions. [2023-08-27 11:40:22,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1172 transitions. [2023-08-27 11:40:22,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:22,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1172 transitions. [2023-08-27 11:40:22,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 11:40:22,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states 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 11:40:22,778 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states 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 11:40:22,778 INFO L175 Difference]: Start difference. First operand has 179 places, 153 transitions, 2578 flow. Second operand 8 states and 1172 transitions. [2023-08-27 11:40:22,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 185 transitions, 3113 flow [2023-08-27 11:40:22,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 185 transitions, 2856 flow, removed 6 selfloop flow, removed 20 redundant places. [2023-08-27 11:40:22,807 INFO L231 Difference]: Finished difference. Result has 163 places, 139 transitions, 2195 flow [2023-08-27 11:40:22,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2195, PETRI_PLACES=163, PETRI_TRANSITIONS=139} [2023-08-27 11:40:22,808 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 90 predicate places. [2023-08-27 11:40:22,808 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 139 transitions, 2195 flow [2023-08-27 11:40:22,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.75) internal successors, (1118), 8 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states 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 11:40:22,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:22,808 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:22,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 11:40:23,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-08-27 11:40:23,009 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:23,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash 802991584, now seen corresponding path program 2 times [2023-08-27 11:40:23,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:23,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529625912] [2023-08-27 11:40:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:23,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 11:40:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529625912] [2023-08-27 11:40:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529625912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289049551] [2023-08-27 11:40:23,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:40:23,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:23,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:23,161 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:23,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 11:40:23,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:40:23,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:40:23,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:23,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:23,300 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:23,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:23,344 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 11:40:23,365 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 14 treesize of output 16 [2023-08-27 11:40:23,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-27 11:40:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 11:40:23,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:40:23,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289049551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:23,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:40:23,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-27 11:40:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471299885] [2023-08-27 11:40:23,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:23,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:40:23,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:23,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:40:23,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:40:23,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 397 [2023-08-27 11:40:23,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 139 transitions, 2195 flow. Second operand has 7 states, 7 states have (on average 145.85714285714286) internal successors, (1021), 7 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 11:40:23,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:23,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 397 [2023-08-27 11:40:23,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:23,671 INFO L124 PetriNetUnfolderBase]: 546/1548 cut-off events. [2023-08-27 11:40:23,671 INFO L125 PetriNetUnfolderBase]: For 18718/18718 co-relation queries the response was YES. [2023-08-27 11:40:23,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8706 conditions, 1548 events. 546/1548 cut-off events. For 18718/18718 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 10348 event pairs, 182 based on Foata normal form. 8/1555 useless extension candidates. Maximal degree in co-relation 8536. Up to 604 conditions per place. [2023-08-27 11:40:23,679 INFO L140 encePairwiseOnDemand]: 386/397 looper letters, 91 selfloop transitions, 33 changer transitions 21/151 dead transitions. [2023-08-27 11:40:23,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 151 transitions, 2418 flow [2023-08-27 11:40:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:40:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:40:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1062 transitions. [2023-08-27 11:40:23,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38215185318459877 [2023-08-27 11:40:23,680 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1062 transitions. [2023-08-27 11:40:23,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1062 transitions. [2023-08-27 11:40:23,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:23,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1062 transitions. [2023-08-27 11:40:23,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.71428571428572) internal successors, (1062), 7 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states 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 11:40:23,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:40:23,682 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states 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 11:40:23,682 INFO L175 Difference]: Start difference. First operand has 163 places, 139 transitions, 2195 flow. Second operand 7 states and 1062 transitions. [2023-08-27 11:40:23,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 151 transitions, 2418 flow [2023-08-27 11:40:23,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 151 transitions, 2189 flow, removed 39 selfloop flow, removed 14 redundant places. [2023-08-27 11:40:23,703 INFO L231 Difference]: Finished difference. Result has 145 places, 113 transitions, 1585 flow [2023-08-27 11:40:23,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1585, PETRI_PLACES=145, PETRI_TRANSITIONS=113} [2023-08-27 11:40:23,704 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 72 predicate places. [2023-08-27 11:40:23,704 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 113 transitions, 1585 flow [2023-08-27 11:40:23,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.85714285714286) internal successors, (1021), 7 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 11:40:23,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:23,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:23,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-27 11:40:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-08-27 11:40:23,905 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:23,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2047616209, now seen corresponding path program 1 times [2023-08-27 11:40:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670398802] [2023-08-27 11:40:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:40:23,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:23,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670398802] [2023-08-27 11:40:23,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670398802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:23,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:23,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:40:23,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588147445] [2023-08-27 11:40:23,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:23,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:40:23,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:23,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:40:23,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:40:23,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 397 [2023-08-27 11:40:23,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 113 transitions, 1585 flow. Second operand has 6 states, 6 states have (on average 148.66666666666666) internal successors, (892), 6 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 11:40:23,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:23,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 397 [2023-08-27 11:40:23,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:24,257 INFO L124 PetriNetUnfolderBase]: 505/1373 cut-off events. [2023-08-27 11:40:24,257 INFO L125 PetriNetUnfolderBase]: For 14778/14778 co-relation queries the response was YES. [2023-08-27 11:40:24,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 1373 events. 505/1373 cut-off events. For 14778/14778 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8744 event pairs, 223 based on Foata normal form. 6/1378 useless extension candidates. Maximal degree in co-relation 7277. Up to 757 conditions per place. [2023-08-27 11:40:24,267 INFO L140 encePairwiseOnDemand]: 385/397 looper letters, 90 selfloop transitions, 55 changer transitions 5/156 dead transitions. [2023-08-27 11:40:24,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 156 transitions, 2226 flow [2023-08-27 11:40:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:40:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:40:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1528 transitions. [2023-08-27 11:40:24,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3848866498740554 [2023-08-27 11:40:24,269 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1528 transitions. [2023-08-27 11:40:24,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1528 transitions. [2023-08-27 11:40:24,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:24,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1528 transitions. [2023-08-27 11:40:24,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 152.8) internal successors, (1528), 10 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states 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 11:40:24,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 397.0) internal successors, (4367), 11 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states 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 11:40:24,274 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 397.0) internal successors, (4367), 11 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states 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 11:40:24,274 INFO L175 Difference]: Start difference. First operand has 145 places, 113 transitions, 1585 flow. Second operand 10 states and 1528 transitions. [2023-08-27 11:40:24,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 156 transitions, 2226 flow [2023-08-27 11:40:24,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 156 transitions, 1904 flow, removed 14 selfloop flow, removed 15 redundant places. [2023-08-27 11:40:24,300 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 1499 flow [2023-08-27 11:40:24,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1499, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2023-08-27 11:40:24,301 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 60 predicate places. [2023-08-27 11:40:24,301 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 1499 flow [2023-08-27 11:40:24,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.66666666666666) internal successors, (892), 6 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 11:40:24,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:24,301 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:24,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-27 11:40:24,302 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:24,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:24,302 INFO L85 PathProgramCache]: Analyzing trace with hash 685430629, now seen corresponding path program 2 times [2023-08-27 11:40:24,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:24,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001074814] [2023-08-27 11:40:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:24,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:40:24,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001074814] [2023-08-27 11:40:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001074814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259118419] [2023-08-27 11:40:24,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:40:24,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:24,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:24,500 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:24,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 11:40:24,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:40:24,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:40:24,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:24,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:24,666 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:24,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:24,735 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 11:40:24,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:40:24,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:40:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:24,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:40:24,901 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:40:24,901 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-27 11:40:24,903 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 35 treesize of output 27 [2023-08-27 11:40:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259118419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:40:24,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:40:24,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-08-27 11:40:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432697281] [2023-08-27 11:40:24,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:40:24,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 11:40:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 11:40:24,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=373, Unknown=2, NotChecked=0, Total=462 [2023-08-27 11:40:24,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 397 [2023-08-27 11:40:24,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 1499 flow. Second operand has 22 states, 22 states have (on average 138.1818181818182) internal successors, (3040), 22 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states 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 11:40:24,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:24,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 397 [2023-08-27 11:40:24,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:25,473 INFO L124 PetriNetUnfolderBase]: 501/1362 cut-off events. [2023-08-27 11:40:25,473 INFO L125 PetriNetUnfolderBase]: For 10859/10859 co-relation queries the response was YES. [2023-08-27 11:40:25,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7118 conditions, 1362 events. 501/1362 cut-off events. For 10859/10859 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8601 event pairs, 130 based on Foata normal form. 8/1369 useless extension candidates. Maximal degree in co-relation 6966. Up to 371 conditions per place. [2023-08-27 11:40:25,479 INFO L140 encePairwiseOnDemand]: 383/397 looper letters, 100 selfloop transitions, 31 changer transitions 70/207 dead transitions. [2023-08-27 11:40:25,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 207 transitions, 2651 flow [2023-08-27 11:40:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 11:40:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 11:40:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2538 transitions. [2023-08-27 11:40:25,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35516372795969775 [2023-08-27 11:40:25,482 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2538 transitions. [2023-08-27 11:40:25,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2538 transitions. [2023-08-27 11:40:25,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:25,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2538 transitions. [2023-08-27 11:40:25,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 141.0) internal successors, (2538), 18 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states 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 11:40:25,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 397.0) internal successors, (7543), 19 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states 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 11:40:25,489 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 397.0) internal successors, (7543), 19 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states 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 11:40:25,489 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 1499 flow. Second operand 18 states and 2538 transitions. [2023-08-27 11:40:25,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 207 transitions, 2651 flow [2023-08-27 11:40:25,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 207 transitions, 2541 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-27 11:40:25,508 INFO L231 Difference]: Finished difference. Result has 151 places, 87 transitions, 1142 flow [2023-08-27 11:40:25,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1142, PETRI_PLACES=151, PETRI_TRANSITIONS=87} [2023-08-27 11:40:25,508 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 78 predicate places. [2023-08-27 11:40:25,509 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 87 transitions, 1142 flow [2023-08-27 11:40:25,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 138.1818181818182) internal successors, (3040), 22 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states 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 11:40:25,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:25,509 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:25,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-27 11:40:25,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:25,714 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:25,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:25,714 INFO L85 PathProgramCache]: Analyzing trace with hash 287234480, now seen corresponding path program 1 times [2023-08-27 11:40:25,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:25,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407483199] [2023-08-27 11:40:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:25,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:40:25,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:25,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407483199] [2023-08-27 11:40:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407483199] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:25,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:40:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446527835] [2023-08-27 11:40:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:25,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:40:25,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:40:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:40:25,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 397 [2023-08-27 11:40:25,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 87 transitions, 1142 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 11:40:25,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:25,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 397 [2023-08-27 11:40:25,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:26,035 INFO L124 PetriNetUnfolderBase]: 399/1100 cut-off events. [2023-08-27 11:40:26,035 INFO L125 PetriNetUnfolderBase]: For 9789/9789 co-relation queries the response was YES. [2023-08-27 11:40:26,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5892 conditions, 1100 events. 399/1100 cut-off events. For 9789/9789 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6559 event pairs, 155 based on Foata normal form. 6/1105 useless extension candidates. Maximal degree in co-relation 5854. Up to 544 conditions per place. [2023-08-27 11:40:26,043 INFO L140 encePairwiseOnDemand]: 386/397 looper letters, 66 selfloop transitions, 40 changer transitions 10/122 dead transitions. [2023-08-27 11:40:26,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 122 transitions, 1667 flow [2023-08-27 11:40:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:40:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:40:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1375 transitions. [2023-08-27 11:40:26,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38483067450321856 [2023-08-27 11:40:26,045 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1375 transitions. [2023-08-27 11:40:26,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1375 transitions. [2023-08-27 11:40:26,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:26,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1375 transitions. [2023-08-27 11:40:26,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.77777777777777) internal successors, (1375), 9 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states 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 11:40:26,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states 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 11:40:26,049 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states 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 11:40:26,049 INFO L175 Difference]: Start difference. First operand has 151 places, 87 transitions, 1142 flow. Second operand 9 states and 1375 transitions. [2023-08-27 11:40:26,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 122 transitions, 1667 flow [2023-08-27 11:40:26,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 122 transitions, 1292 flow, removed 38 selfloop flow, removed 30 redundant places. [2023-08-27 11:40:26,066 INFO L231 Difference]: Finished difference. Result has 116 places, 88 transitions, 962 flow [2023-08-27 11:40:26,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=962, PETRI_PLACES=116, PETRI_TRANSITIONS=88} [2023-08-27 11:40:26,067 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 43 predicate places. [2023-08-27 11:40:26,068 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 88 transitions, 962 flow [2023-08-27 11:40:26,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 11:40:26,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:26,068 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:26,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-27 11:40:26,068 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:40:26,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1895019936, now seen corresponding path program 2 times [2023-08-27 11:40:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:26,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70958213] [2023-08-27 11:40:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:26,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:26,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70958213] [2023-08-27 11:40:26,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70958213] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:40:26,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590885253] [2023-08-27 11:40:26,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:40:26,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:26,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:40:26,299 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:40:26,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 11:40:26,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:40:26,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:40:26,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:40:26,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:40:26,453 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:40:26,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:40:26,508 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 11:40:26,532 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 11:40:26,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 18 [2023-08-27 11:40:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:26,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:40:26,660 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:40:26,660 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-27 11:40:26,662 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 35 treesize of output 27 [2023-08-27 11:40:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:40:26,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590885253] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:40:26,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:40:26,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-08-27 11:40:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080999372] [2023-08-27 11:40:26,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:40:26,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 11:40:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 11:40:26,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=374, Unknown=1, NotChecked=0, Total=462 [2023-08-27 11:40:26,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 397 [2023-08-27 11:40:26,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 88 transitions, 962 flow. Second operand has 22 states, 22 states have (on average 138.27272727272728) internal successors, (3042), 22 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states 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 11:40:26,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:26,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 397 [2023-08-27 11:40:26,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:40:27,168 INFO L124 PetriNetUnfolderBase]: 391/1066 cut-off events. [2023-08-27 11:40:27,169 INFO L125 PetriNetUnfolderBase]: For 5945/5945 co-relation queries the response was YES. [2023-08-27 11:40:27,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5071 conditions, 1066 events. 391/1066 cut-off events. For 5945/5945 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6296 event pairs, 110 based on Foata normal form. 8/1073 useless extension candidates. Maximal degree in co-relation 5039. Up to 239 conditions per place. [2023-08-27 11:40:27,172 INFO L140 encePairwiseOnDemand]: 384/397 looper letters, 0 selfloop transitions, 0 changer transitions 161/161 dead transitions. [2023-08-27 11:40:27,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 161 transitions, 1877 flow [2023-08-27 11:40:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:40:27,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:40:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2252 transitions. [2023-08-27 11:40:27,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3545340050377834 [2023-08-27 11:40:27,174 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2252 transitions. [2023-08-27 11:40:27,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2252 transitions. [2023-08-27 11:40:27,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:40:27,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2252 transitions. [2023-08-27 11:40:27,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 140.75) internal successors, (2252), 16 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states 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 11:40:27,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 397.0) internal successors, (6749), 17 states have internal predecessors, (6749), 0 states have call successors, (0), 0 states 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 11:40:27,180 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 397.0) internal successors, (6749), 17 states have internal predecessors, (6749), 0 states have call successors, (0), 0 states 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 11:40:27,180 INFO L175 Difference]: Start difference. First operand has 116 places, 88 transitions, 962 flow. Second operand 16 states and 2252 transitions. [2023-08-27 11:40:27,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 161 transitions, 1877 flow [2023-08-27 11:40:27,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 161 transitions, 1646 flow, removed 30 selfloop flow, removed 11 redundant places. [2023-08-27 11:40:27,189 INFO L231 Difference]: Finished difference. Result has 116 places, 0 transitions, 0 flow [2023-08-27 11:40:27,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=116, PETRI_TRANSITIONS=0} [2023-08-27 11:40:27,189 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 43 predicate places. [2023-08-27 11:40:27,189 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 0 transitions, 0 flow [2023-08-27 11:40:27,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 138.27272727272728) internal successors, (3042), 22 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states 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 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (19 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-27 11:40:27,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 11:40:27,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 11:40:27,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 11:40:27,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:40:27,392 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:40:27,392 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:40:27,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 214 transitions, 458 flow [2023-08-27 11:40:27,416 INFO L124 PetriNetUnfolderBase]: 54/443 cut-off events. [2023-08-27 11:40:27,417 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:40:27,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 443 events. 54/443 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1566 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2023-08-27 11:40:27,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 214 transitions, 458 flow [2023-08-27 11:40:27,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 214 transitions, 458 flow [2023-08-27 11:40:27,420 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:40:27,420 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 214 transitions, 458 flow [2023-08-27 11:40:27,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 214 transitions, 458 flow [2023-08-27 11:40:27,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 214 transitions, 458 flow [2023-08-27 11:40:27,453 INFO L124 PetriNetUnfolderBase]: 54/443 cut-off events. [2023-08-27 11:40:27,453 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:40:27,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 443 events. 54/443 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1566 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2023-08-27 11:40:27,462 INFO L119 LiptonReduction]: Number of co-enabled transitions 23760 [2023-08-27 11:40:30,405 INFO L134 LiptonReduction]: Checked pairs total: 52593 [2023-08-27 11:40:30,405 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-27 11:40:30,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:40:30,407 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;@147321b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:40:30,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:40:30,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:40:30,413 INFO L124 PetriNetUnfolderBase]: 21/109 cut-off events. [2023-08-27 11:40:30,413 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:40:30,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:30,413 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 11:40:30,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:40:30,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1989433528, now seen corresponding path program 1 times [2023-08-27 11:40:30,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:30,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875268699] [2023-08-27 11:40:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:40:30,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:40:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:40:30,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:40:30,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:40:30,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:40:30,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-27 11:40:30,431 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:40:30,431 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:40:30,431 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:40:30,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 11:40:30,448 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 11:40:30,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 256 transitions, 556 flow [2023-08-27 11:40:30,517 INFO L124 PetriNetUnfolderBase]: 86/685 cut-off events. [2023-08-27 11:40:30,517 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:40:30,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 685 events. 86/685 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2825 event pairs, 6 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 463. Up to 32 conditions per place. [2023-08-27 11:40:30,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 256 transitions, 556 flow [2023-08-27 11:40:30,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 256 transitions, 556 flow [2023-08-27 11:40:30,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:40:30,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 256 transitions, 556 flow [2023-08-27 11:40:30,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 256 transitions, 556 flow [2023-08-27 11:40:30,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 256 transitions, 556 flow [2023-08-27 11:40:30,570 INFO L124 PetriNetUnfolderBase]: 86/685 cut-off events. [2023-08-27 11:40:30,570 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:40:30,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 685 events. 86/685 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2825 event pairs, 6 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 463. Up to 32 conditions per place. [2023-08-27 11:40:30,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 38560 [2023-08-27 11:40:33,862 INFO L134 LiptonReduction]: Checked pairs total: 92106 [2023-08-27 11:40:33,862 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-27 11:40:33,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:40:33,863 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;@147321b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:40:33,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-27 11:40:33,864 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:40:33,864 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 11:40:33,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:40:33,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:40:33,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:40:33,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-27 11:40:33,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:40:33,865 INFO L85 PathProgramCache]: Analyzing trace with hash 69438346, now seen corresponding path program 1 times [2023-08-27 11:40:33,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:40:33,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410826317] [2023-08-27 11:40:33,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:40:33,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:40:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:40:33,875 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 11:40:33,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:40:33,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410826317] [2023-08-27 11:40:33,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410826317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:40:33,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:40:33,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:40:33,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316031877] [2023-08-27 11:40:33,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:40:33,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:40:33,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:40:33,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:40:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:40:33,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 466 [2023-08-27 11:40:33,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 11:40:33,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:40:33,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 466 [2023-08-27 11:40:33,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand