/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/05-lval_ls_02-idx_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:05:37,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:05:37,299 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 11:05:37,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:05:37,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:05:37,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:05:37,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:05:37,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:05:37,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:05:37,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:05:37,348 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:05:37,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:05:37,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:05:37,350 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:05:37,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:05:37,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:05:37,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:05:37,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:05:37,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:05:37,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:05:37,351 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:05:37,351 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:05:37,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:05:37,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:05:37,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:05:37,353 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:05:37,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:05:37,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:05:37,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:05:37,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:05:37,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:05:37,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:05:37,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:05:37,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:05:37,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:05:37,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:05:37,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:05:37,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:05:37,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:05:37,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:05:37,713 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:05:37,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_02-idx_nr.i [2023-08-27 11:05:38,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:05:39,227 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:05:39,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_02-idx_nr.i [2023-08-27 11:05:39,246 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b9a7e823/547ead3f48184c2092ff93dd916a0681/FLAG77a0908f7 [2023-08-27 11:05:39,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b9a7e823/547ead3f48184c2092ff93dd916a0681 [2023-08-27 11:05:39,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:05:39,262 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:05:39,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:05:39,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:05:39,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:05:39,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e17a9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39, skipping insertion in model container [2023-08-27 11:05:39,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,305 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:05:39,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:05:39,541 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:05:39,575 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:05:39,576 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:05:39,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:05:39,638 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:05:39,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39 WrapperNode [2023-08-27 11:05:39,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:05:39,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:05:39,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:05:39,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:05:39,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,689 INFO L138 Inliner]: procedures = 161, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-08-27 11:05:39,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:05:39,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:05:39,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:05:39,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:05:39,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:05:39,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:05:39,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:05:39,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:05:39,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (1/1) ... [2023-08-27 11:05:39,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:05:39,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:05:39,765 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 11:05:39,784 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 11:05:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:05:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:05:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:05:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:05:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:05:39,803 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:05:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:05:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:05:39,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:05:39,804 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 11:05:39,945 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:05:39,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:05:40,132 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:05:40,137 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:05:40,137 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-27 11:05:40,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:40 BoogieIcfgContainer [2023-08-27 11:05:40,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:05:40,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:05:40,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:05:40,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:05:40,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:05:39" (1/3) ... [2023-08-27 11:05:40,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6415f4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:05:40, skipping insertion in model container [2023-08-27 11:05:40,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:39" (2/3) ... [2023-08-27 11:05:40,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6415f4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:05:40, skipping insertion in model container [2023-08-27 11:05:40,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:40" (3/3) ... [2023-08-27 11:05:40,147 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2023-08-27 11:05:40,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:05:40,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-27 11:05:40,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:05:40,230 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:05:40,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 58 transitions, 121 flow [2023-08-27 11:05:40,308 INFO L124 PetriNetUnfolderBase]: 2/57 cut-off events. [2023-08-27 11:05:40,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:40,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-08-27 11:05:40,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 58 transitions, 121 flow [2023-08-27 11:05:40,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 57 transitions, 117 flow [2023-08-27 11:05:40,322 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:05:40,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 117 flow [2023-08-27 11:05:40,342 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 117 flow [2023-08-27 11:05:40,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 117 flow [2023-08-27 11:05:40,368 INFO L124 PetriNetUnfolderBase]: 2/57 cut-off events. [2023-08-27 11:05:40,369 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:40,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-08-27 11:05:40,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 442 [2023-08-27 11:05:41,583 INFO L134 LiptonReduction]: Checked pairs total: 834 [2023-08-27 11:05:41,583 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-27 11:05:41,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:05:41,611 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;@eb05a53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:05:41,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-27 11:05:41,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:05:41,618 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 11:05:41,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:41,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:41,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 11:05:41,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:41,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:41,628 INFO L85 PathProgramCache]: Analyzing trace with hash 7006, now seen corresponding path program 1 times [2023-08-27 11:05:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514692748] [2023-08-27 11:05:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:41,792 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 11:05:41,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:41,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514692748] [2023-08-27 11:05:41,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514692748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:41,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:41,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:05:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506208182] [2023-08-27 11:05:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:41,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:41,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:41,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:41,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 109 [2023-08-27 11:05:41,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:41,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:41,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 109 [2023-08-27 11:05:41,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:41,901 INFO L124 PetriNetUnfolderBase]: 37/88 cut-off events. [2023-08-27 11:05:41,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:41,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 88 events. 37/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 277 event pairs, 36 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 168. Up to 87 conditions per place. [2023-08-27 11:05:41,904 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 14 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-27 11:05:41,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 67 flow [2023-08-27 11:05:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2023-08-27 11:05:41,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954128440366973 [2023-08-27 11:05:41,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2023-08-27 11:05:41,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2023-08-27 11:05:41,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:41,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2023-08-27 11:05:41,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:41,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:41,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:41,925 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 3 states and 162 transitions. [2023-08-27 11:05:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 67 flow [2023-08-27 11:05:41,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:41,928 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 38 flow [2023-08-27 11:05:41,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-27 11:05:41,937 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-08-27 11:05:41,937 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 38 flow [2023-08-27 11:05:41,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:41,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:41,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:05:41,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:05:41,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:41,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 208974167, now seen corresponding path program 1 times [2023-08-27 11:05:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413655518] [2023-08-27 11:05:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:41,987 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 11:05:41,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:41,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413655518] [2023-08-27 11:05:41,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413655518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:41,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:41,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:05:41,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207629643] [2023-08-27 11:05:41,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:41,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:41,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:41,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:41,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 109 [2023-08-27 11:05:41,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:41,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:41,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 109 [2023-08-27 11:05:41,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:42,030 INFO L124 PetriNetUnfolderBase]: 37/89 cut-off events. [2023-08-27 11:05:42,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:42,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 89 events. 37/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 277 event pairs, 36 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 172. Up to 89 conditions per place. [2023-08-27 11:05:42,032 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 15 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-08-27 11:05:42,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 74 flow [2023-08-27 11:05:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2023-08-27 11:05:42,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954128440366973 [2023-08-27 11:05:42,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2023-08-27 11:05:42,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2023-08-27 11:05:42,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:42,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2023-08-27 11:05:42,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,038 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 38 flow. Second operand 3 states and 162 transitions. [2023-08-27 11:05:42,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 74 flow [2023-08-27 11:05:42,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:05:42,040 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 46 flow [2023-08-27 11:05:42,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-27 11:05:42,041 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2023-08-27 11:05:42,041 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 46 flow [2023-08-27 11:05:42,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:42,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:05:42,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:05:42,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:42,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2112099877, now seen corresponding path program 1 times [2023-08-27 11:05:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600315690] [2023-08-27 11:05:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:42,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:42,128 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 11:05:42,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:42,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600315690] [2023-08-27 11:05:42,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600315690] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:05:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961426723] [2023-08-27 11:05:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:42,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:05:42,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:05:42,137 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 11:05:42,191 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 11:05:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:42,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:05:42,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:05:42,271 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 11:05:42,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:05:42,304 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 11:05:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961426723] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:05:42,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:05:42,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-27 11:05:42,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604559164] [2023-08-27 11:05:42,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:05:42,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:05:42,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:05:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:05:42,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 109 [2023-08-27 11:05:42,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:42,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 109 [2023-08-27 11:05:42,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:42,394 INFO L124 PetriNetUnfolderBase]: 37/92 cut-off events. [2023-08-27 11:05:42,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:42,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 92 events. 37/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 277 event pairs, 36 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 187. Up to 89 conditions per place. [2023-08-27 11:05:42,395 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 15 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-08-27 11:05:42,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 98 flow [2023-08-27 11:05:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:05:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:05:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 311 transitions. [2023-08-27 11:05:42,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47553516819571867 [2023-08-27 11:05:42,400 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 311 transitions. [2023-08-27 11:05:42,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 311 transitions. [2023-08-27 11:05:42,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:42,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 311 transitions. [2023-08-27 11:05:42,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,405 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,405 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 6 states and 311 transitions. [2023-08-27 11:05:42,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 98 flow [2023-08-27 11:05:42,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 94 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:42,406 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 78 flow [2023-08-27 11:05:42,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-27 11:05:42,407 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-08-27 11:05:42,407 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 78 flow [2023-08-27 11:05:42,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:42,408 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-27 11:05:42,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 11:05:42,616 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 11:05:42,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:42,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash -658460073, now seen corresponding path program 2 times [2023-08-27 11:05:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:42,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615302659] [2023-08-27 11:05:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 11:05:42,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:42,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615302659] [2023-08-27 11:05:42,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615302659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:42,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:42,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:05:42,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340249103] [2023-08-27 11:05:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:42,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:42,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:42,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:42,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 109 [2023-08-27 11:05:42,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:42,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 109 [2023-08-27 11:05:42,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:42,793 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2023-08-27 11:05:42,793 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:05:42,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 60 events. 21/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 141 event pairs, 10 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 114. Up to 41 conditions per place. [2023-08-27 11:05:42,794 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 19 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2023-08-27 11:05:42,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 142 flow [2023-08-27 11:05:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2023-08-27 11:05:42,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5474006116207951 [2023-08-27 11:05:42,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2023-08-27 11:05:42,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2023-08-27 11:05:42,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:42,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2023-08-27 11:05:42,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,802 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 78 flow. Second operand 3 states and 179 transitions. [2023-08-27 11:05:42,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 142 flow [2023-08-27 11:05:42,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 128 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:42,805 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 81 flow [2023-08-27 11:05:42,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-08-27 11:05:42,807 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-08-27 11:05:42,807 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 81 flow [2023-08-27 11:05:42,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:42,807 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:42,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:05:42,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:42,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1068672428, now seen corresponding path program 1 times [2023-08-27 11:05:42,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:42,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500803470] [2023-08-27 11:05:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:42,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 11:05:42,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:42,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500803470] [2023-08-27 11:05:42,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500803470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:42,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:42,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546162948] [2023-08-27 11:05:42,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:42,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:42,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:42,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:42,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 109 [2023-08-27 11:05:42,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:42,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:42,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 109 [2023-08-27 11:05:42,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:42,996 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2023-08-27 11:05:42,996 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 11:05:42,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 24 events. 1/24 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 30 event pairs, 0 based on Foata normal form. 6/28 useless extension candidates. Maximal degree in co-relation 34. Up to 14 conditions per place. [2023-08-27 11:05:42,999 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 16 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2023-08-27 11:05:42,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 121 flow [2023-08-27 11:05:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-08-27 11:05:43,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045871559633027 [2023-08-27 11:05:43,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-08-27 11:05:43,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-08-27 11:05:43,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:43,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-08-27 11:05:43,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,004 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 81 flow. Second operand 3 states and 165 transitions. [2023-08-27 11:05:43,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 121 flow [2023-08-27 11:05:43,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:43,006 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 86 flow [2023-08-27 11:05:43,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-27 11:05:43,009 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2023-08-27 11:05:43,009 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 86 flow [2023-08-27 11:05:43,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:43,009 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:05:43,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:43,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1253558551, now seen corresponding path program 1 times [2023-08-27 11:05:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:43,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120636277] [2023-08-27 11:05:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:43,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120636277] [2023-08-27 11:05:43,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120636277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:05:43,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868534961] [2023-08-27 11:05:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:43,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:05:43,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:05:43,125 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 11:05:43,153 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 11:05:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:43,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:05:43,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:05:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:43,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:05:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868534961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:05:43,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:05:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-27 11:05:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389134611] [2023-08-27 11:05:43,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:05:43,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:05:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:43,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:05:43,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:05:43,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 109 [2023-08-27 11:05:43,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 86 flow. Second operand has 12 states, 12 states have (on average 49.583333333333336) internal successors, (595), 12 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:43,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 109 [2023-08-27 11:05:43,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:43,352 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-08-27 11:05:43,352 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-27 11:05:43,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 30 events. 1/30 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 26 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 60. Up to 21 conditions per place. [2023-08-27 11:05:43,365 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 15 selfloop transitions, 11 changer transitions 0/26 dead transitions. [2023-08-27 11:05:43,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 174 flow [2023-08-27 11:05:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:05:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:05:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 608 transitions. [2023-08-27 11:05:43,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648318042813456 [2023-08-27 11:05:43,374 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 608 transitions. [2023-08-27 11:05:43,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 608 transitions. [2023-08-27 11:05:43,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:43,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 608 transitions. [2023-08-27 11:05:43,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 50.666666666666664) internal successors, (608), 12 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,378 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,379 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 86 flow. Second operand 12 states and 608 transitions. [2023-08-27 11:05:43,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 174 flow [2023-08-27 11:05:43,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 26 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:43,383 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 166 flow [2023-08-27 11:05:43,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=166, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2023-08-27 11:05:43,385 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 26 predicate places. [2023-08-27 11:05:43,385 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 166 flow [2023-08-27 11:05:43,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.583333333333336) internal successors, (595), 12 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:43,386 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:43,394 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 11:05:43,591 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 11:05:43,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:43,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash 469002990, now seen corresponding path program 1 times [2023-08-27 11:05:43,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:43,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969177206] [2023-08-27 11:05:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:43,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:05:43,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:43,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969177206] [2023-08-27 11:05:43,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969177206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:43,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:43,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:43,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936015032] [2023-08-27 11:05:43,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:43,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:05:43,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:43,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:05:43,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:05:43,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 109 [2023-08-27 11:05:43,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:43,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 109 [2023-08-27 11:05:43,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:43,776 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2023-08-27 11:05:43,776 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-27 11:05:43,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 29 events. 1/29 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 81. Up to 17 conditions per place. [2023-08-27 11:05:43,778 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 22 selfloop transitions, 5 changer transitions 2/29 dead transitions. [2023-08-27 11:05:43,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 29 transitions, 230 flow [2023-08-27 11:05:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:05:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:05:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2023-08-27 11:05:43,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45871559633027525 [2023-08-27 11:05:43,780 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 250 transitions. [2023-08-27 11:05:43,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 250 transitions. [2023-08-27 11:05:43,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:43,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 250 transitions. [2023-08-27 11:05:43,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,782 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 166 flow. Second operand 5 states and 250 transitions. [2023-08-27 11:05:43,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 29 transitions, 230 flow [2023-08-27 11:05:43,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 29 transitions, 182 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-27 11:05:43,787 INFO L231 Difference]: Finished difference. Result has 45 places, 25 transitions, 124 flow [2023-08-27 11:05:43,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2023-08-27 11:05:43,788 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2023-08-27 11:05:43,788 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 124 flow [2023-08-27 11:05:43,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:43,788 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:43,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:05:43,789 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:43,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash 469002999, now seen corresponding path program 1 times [2023-08-27 11:05:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:43,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879584284] [2023-08-27 11:05:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:43,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:05:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879584284] [2023-08-27 11:05:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879584284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837280578] [2023-08-27 11:05:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:43,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:05:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:05:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:05:43,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 109 [2023-08-27 11:05:43,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:43,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 109 [2023-08-27 11:05:43,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:43,897 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-08-27 11:05:43,897 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:05:43,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 27 events. 1/27 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 59. Up to 17 conditions per place. [2023-08-27 11:05:43,898 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 18 selfloop transitions, 3 changer transitions 6/27 dead transitions. [2023-08-27 11:05:43,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 27 transitions, 182 flow [2023-08-27 11:05:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:05:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:05:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 248 transitions. [2023-08-27 11:05:43,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45504587155963305 [2023-08-27 11:05:43,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 248 transitions. [2023-08-27 11:05:43,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 248 transitions. [2023-08-27 11:05:43,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:43,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 248 transitions. [2023-08-27 11:05:43,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,902 INFO L175 Difference]: Start difference. First operand has 45 places, 25 transitions, 124 flow. Second operand 5 states and 248 transitions. [2023-08-27 11:05:43,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 27 transitions, 182 flow [2023-08-27 11:05:43,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 27 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:05:43,904 INFO L231 Difference]: Finished difference. Result has 46 places, 21 transitions, 111 flow [2023-08-27 11:05:43,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2023-08-27 11:05:43,905 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-08-27 11:05:43,905 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 111 flow [2023-08-27 11:05:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:43,905 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:43,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:05:43,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:43,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:43,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1405426334, now seen corresponding path program 1 times [2023-08-27 11:05:43,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:43,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837538668] [2023-08-27 11:05:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:43,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:05:43,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837538668] [2023-08-27 11:05:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837538668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:43,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:43,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157588602] [2023-08-27 11:05:43,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:43,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:05:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:05:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:05:43,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 109 [2023-08-27 11:05:43,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:43,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:43,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 109 [2023-08-27 11:05:43,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:44,018 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-27 11:05:44,018 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-27 11:05:44,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 21 events. 1/21 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 56. Up to 16 conditions per place. [2023-08-27 11:05:44,019 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 17 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2023-08-27 11:05:44,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 21 transitions, 150 flow [2023-08-27 11:05:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:05:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:05:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2023-08-27 11:05:44,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43486238532110094 [2023-08-27 11:05:44,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 237 transitions. [2023-08-27 11:05:44,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 237 transitions. [2023-08-27 11:05:44,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:44,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 237 transitions. [2023-08-27 11:05:44,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,024 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,024 INFO L175 Difference]: Start difference. First operand has 46 places, 21 transitions, 111 flow. Second operand 5 states and 237 transitions. [2023-08-27 11:05:44,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 21 transitions, 150 flow [2023-08-27 11:05:44,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 21 transitions, 140 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 11:05:44,025 INFO L231 Difference]: Finished difference. Result has 40 places, 20 transitions, 101 flow [2023-08-27 11:05:44,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2023-08-27 11:05:44,026 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 19 predicate places. [2023-08-27 11:05:44,026 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 101 flow [2023-08-27 11:05:44,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:44,027 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:44,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:05:44,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:05:44,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1405426327, now seen corresponding path program 2 times [2023-08-27 11:05:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:44,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325778754] [2023-08-27 11:05:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:05:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325778754] [2023-08-27 11:05:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325778754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:44,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:44,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143026287] [2023-08-27 11:05:44,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:44,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:05:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:05:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:05:44,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 109 [2023-08-27 11:05:44,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 20 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:44,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 109 [2023-08-27 11:05:44,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:44,147 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-27 11:05:44,147 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-27 11:05:44,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 20 events. 1/20 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 54. Up to 16 conditions per place. [2023-08-27 11:05:44,148 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-27 11:05:44,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 20 transitions, 140 flow [2023-08-27 11:05:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:05:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:05:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2023-08-27 11:05:44,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43302752293577984 [2023-08-27 11:05:44,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 236 transitions. [2023-08-27 11:05:44,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 236 transitions. [2023-08-27 11:05:44,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:44,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 236 transitions. [2023-08-27 11:05:44,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,152 INFO L175 Difference]: Start difference. First operand has 40 places, 20 transitions, 101 flow. Second operand 5 states and 236 transitions. [2023-08-27 11:05:44,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 20 transitions, 140 flow [2023-08-27 11:05:44,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 20 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:05:44,154 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-27 11:05:44,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-27 11:05:44,155 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-08-27 11:05:44,155 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-27 11:05:44,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:44,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2023-08-27 11:05:44,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-08-27 11:05:44,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-08-27 11:05:44,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-08-27 11:05:44,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-27 11:05:44,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-08-27 11:05:44,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-08-27 11:05:44,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-08-27 11:05:44,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-08-27 11:05:44,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:05:44,160 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:44,164 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:05:44,164 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:05:44,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:05:44 BasicIcfg [2023-08-27 11:05:44,167 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:05:44,168 INFO L158 Benchmark]: Toolchain (without parser) took 4905.64ms. Allocated memory was 341.8MB in the beginning and 429.9MB in the end (delta: 88.1MB). Free memory was 317.0MB in the beginning and 296.7MB in the end (delta: 20.3MB). Peak memory consumption was 110.0MB. Max. memory is 16.0GB. [2023-08-27 11:05:44,168 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 341.8MB. Free memory is still 318.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:05:44,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.42ms. Allocated memory is still 341.8MB. Free memory was 317.0MB in the beginning and 298.0MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 11:05:44,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.59ms. Allocated memory is still 341.8MB. Free memory was 298.0MB in the beginning and 296.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:05:44,172 INFO L158 Benchmark]: Boogie Preprocessor took 33.55ms. Allocated memory is still 341.8MB. Free memory was 296.0MB in the beginning and 294.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:05:44,172 INFO L158 Benchmark]: RCFGBuilder took 414.97ms. Allocated memory is still 341.8MB. Free memory was 294.5MB in the beginning and 282.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 11:05:44,173 INFO L158 Benchmark]: TraceAbstraction took 4026.78ms. Allocated memory was 341.8MB in the beginning and 429.9MB in the end (delta: 88.1MB). Free memory was 281.8MB in the beginning and 296.7MB in the end (delta: -14.8MB). Peak memory consumption was 76.4MB. Max. memory is 16.0GB. [2023-08-27 11:05:44,174 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 341.8MB. Free memory is still 318.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 375.42ms. Allocated memory is still 341.8MB. Free memory was 317.0MB in the beginning and 298.0MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.59ms. Allocated memory is still 341.8MB. Free memory was 298.0MB in the beginning and 296.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.55ms. Allocated memory is still 341.8MB. Free memory was 296.0MB in the beginning and 294.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 414.97ms. Allocated memory is still 341.8MB. Free memory was 294.5MB in the beginning and 282.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4026.78ms. Allocated memory was 341.8MB in the beginning and 429.9MB in the end (delta: 88.1MB). Free memory was 281.8MB in the beginning and 296.7MB in the end (delta: -14.8MB). Peak memory consumption was 76.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 59 PlacesBefore, 21 PlacesAfterwards, 57 TransitionsBefore, 18 TransitionsAfterwards, 442 CoEnabledTransitionPairs, 4 FixpointIterations, 22 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 51 TotalNumberOfCompositions, 834 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 608, independent: 539, independent conditional: 0, independent unconditional: 539, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 288, independent: 266, independent conditional: 0, independent unconditional: 266, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 608, independent: 273, independent conditional: 0, independent unconditional: 273, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 288, unknown conditional: 0, unknown unconditional: 288] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 72 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 10, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 397 IncrementalHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 397 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=6, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 240/273 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 11:05:44,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...