./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:50:08,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:50:08,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:50:08,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:50:08,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:50:08,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:50:08,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:50:08,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:50:08,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:50:08,157 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:50:08,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:50:08,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:50:08,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:50:08,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:50:08,159 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:50:08,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:50:08,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:50:08,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:50:08,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:50:08,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:50:08,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:50:08,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:50:08,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:50:08,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:50:08,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:50:08,161 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:50:08,162 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:50:08,162 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:50:08,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:50:08,162 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:50:08,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:50:08,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:50:08,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:50:08,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:50:08,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:50:08,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:50:08,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:50:08,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:50:08,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:50:08,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:50:08,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:50:08,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:50:08,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:50:08,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:50:08,165 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-12 20:50:08,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:50:08,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:50:08,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:50:08,364 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:50:08,364 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:50:08,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-12 20:50:09,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:50:09,799 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:50:09,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-12 20:50:09,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f198c9e7f/76cf874d8fd648369a87ca39fe67529c/FLAG3fea31e3f [2024-11-12 20:50:09,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f198c9e7f/76cf874d8fd648369a87ca39fe67529c [2024-11-12 20:50:09,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:50:09,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:50:09,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:50:09,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:50:09,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:50:09,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:50:09" (1/1) ... [2024-11-12 20:50:09,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6947da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:09, skipping insertion in model container [2024-11-12 20:50:09,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:50:09" (1/1) ... [2024-11-12 20:50:09,875 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:50:10,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:50:10,172 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:50:10,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:50:10,248 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:50:10,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10 WrapperNode [2024-11-12 20:50:10,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:50:10,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:50:10,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:50:10,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:50:10,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,287 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 94 [2024-11-12 20:50:10,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:50:10,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:50:10,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:50:10,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:50:10,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,321 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 20:50:10,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:50:10,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:50:10,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:50:10,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:50:10,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (1/1) ... [2024-11-12 20:50:10,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:50:10,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:10,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:50:10,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:50:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:50:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-12 20:50:10,407 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-12 20:50:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-12 20:50:10,407 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-12 20:50:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:50:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:50:10,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:50:10,409 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:50:10,513 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:50:10,518 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:50:10,633 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:50:10,634 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:50:10,722 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:50:10,723 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:50:10,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:50:10 BoogieIcfgContainer [2024-11-12 20:50:10,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:50:10,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:50:10,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:50:10,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:50:10,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:50:09" (1/3) ... [2024-11-12 20:50:10,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e37a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:50:10, skipping insertion in model container [2024-11-12 20:50:10,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:10" (2/3) ... [2024-11-12 20:50:10,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e37a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:50:10, skipping insertion in model container [2024-11-12 20:50:10,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:50:10" (3/3) ... [2024-11-12 20:50:10,734 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-12 20:50:10,746 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:50:10,746 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-12 20:50:10,746 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:50:10,784 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:50:10,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-12 20:50:10,832 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-12 20:50:10,832 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:50:10,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-12 20:50:10,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-12 20:50:10,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-12 20:50:10,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:50:10,849 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@616223d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:50:10,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-12 20:50:10,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:50:10,856 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-12 20:50:10,856 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:50:10,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:10,857 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:50:10,857 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:10,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash -42937927, now seen corresponding path program 1 times [2024-11-12 20:50:10,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:10,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116593518] [2024-11-12 20:50:10,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:10,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:11,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:11,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116593518] [2024-11-12 20:50:11,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116593518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:11,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:11,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:50:11,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727605448] [2024-11-12 20:50:11,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:11,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:50:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:50:11,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:50:11,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:11,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:11,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:11,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:11,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:11,278 INFO L124 PetriNetUnfolderBase]: 123/288 cut-off events. [2024-11-12 20:50:11,279 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-12 20:50:11,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 288 events. 123/288 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1334 event pairs, 96 based on Foata normal form. 11/229 useless extension candidates. Maximal degree in co-relation 474. Up to 211 conditions per place. [2024-11-12 20:50:11,284 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 17 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2024-11-12 20:50:11,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 99 flow [2024-11-12 20:50:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:50:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:50:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-12 20:50:11,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-12 20:50:11,294 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 52 transitions. [2024-11-12 20:50:11,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 99 flow [2024-11-12 20:50:11,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:11,298 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 60 flow [2024-11-12 20:50:11,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2024-11-12 20:50:11,302 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2024-11-12 20:50:11,303 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 60 flow [2024-11-12 20:50:11,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:11,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:11,303 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:11,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:50:11,303 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:11,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1331075430, now seen corresponding path program 1 times [2024-11-12 20:50:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655345721] [2024-11-12 20:50:11,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:11,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655345721] [2024-11-12 20:50:11,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655345721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:11,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:11,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:50:11,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24899706] [2024-11-12 20:50:11,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:11,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:50:11,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:50:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:50:11,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:11,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:11,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:11,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:11,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:11,424 INFO L124 PetriNetUnfolderBase]: 107/255 cut-off events. [2024-11-12 20:50:11,425 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:50:11,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 255 events. 107/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1116 event pairs, 82 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 448. Up to 184 conditions per place. [2024-11-12 20:50:11,427 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 16 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-11-12 20:50:11,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 92 flow [2024-11-12 20:50:11,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:50:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:50:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-12 20:50:11,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-12 20:50:11,428 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 3 states and 51 transitions. [2024-11-12 20:50:11,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 92 flow [2024-11-12 20:50:11,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:11,429 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 59 flow [2024-11-12 20:50:11,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-12 20:50:11,430 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2024-11-12 20:50:11,430 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 59 flow [2024-11-12 20:50:11,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:11,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:11,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:11,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:50:11,431 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:11,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1330873875, now seen corresponding path program 1 times [2024-11-12 20:50:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:11,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861570625] [2024-11-12 20:50:11,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:11,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:11,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861570625] [2024-11-12 20:50:11,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861570625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:11,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:11,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610290640] [2024-11-12 20:50:11,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:11,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:11,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:11,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:11,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:11,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:11,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:11,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:11,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:11,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:11,618 INFO L124 PetriNetUnfolderBase]: 213/434 cut-off events. [2024-11-12 20:50:11,619 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:50:11,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 434 events. 213/434 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1932 event pairs, 118 based on Foata normal form. 14/363 useless extension candidates. Maximal degree in co-relation 819. Up to 253 conditions per place. [2024-11-12 20:50:11,623 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 38 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-12 20:50:11,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 190 flow [2024-11-12 20:50:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-12 20:50:11,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2024-11-12 20:50:11,625 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 59 flow. Second operand 4 states and 87 transitions. [2024-11-12 20:50:11,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 190 flow [2024-11-12 20:50:11,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:11,628 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 80 flow [2024-11-12 20:50:11,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-11-12 20:50:11,629 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-12 20:50:11,629 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 80 flow [2024-11-12 20:50:11,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:11,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:11,630 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:11,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:50:11,630 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:11,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1220201020, now seen corresponding path program 1 times [2024-11-12 20:50:11,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:11,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238617221] [2024-11-12 20:50:11,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:11,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:11,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238617221] [2024-11-12 20:50:11,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238617221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899325264] [2024-11-12 20:50:11,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:11,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:11,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:11,696 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) [2024-11-12 20:50:11,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:50:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:11,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:50:11,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:11,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:50:11,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899325264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:11,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:50:11,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-12 20:50:11,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211702754] [2024-11-12 20:50:11,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:11,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:50:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:11,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:50:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:50:11,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:11,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:11,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:11,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:11,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:12,021 INFO L124 PetriNetUnfolderBase]: 193/378 cut-off events. [2024-11-12 20:50:12,021 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-12 20:50:12,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 378 events. 193/378 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1582 event pairs, 23 based on Foata normal form. 14/349 useless extension candidates. Maximal degree in co-relation 839. Up to 94 conditions per place. [2024-11-12 20:50:12,029 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 53 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-11-12 20:50:12,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 65 transitions, 277 flow [2024-11-12 20:50:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-12 20:50:12,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-11-12 20:50:12,032 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 80 flow. Second operand 6 states and 125 transitions. [2024-11-12 20:50:12,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 65 transitions, 277 flow [2024-11-12 20:50:12,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 65 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:12,033 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 84 flow [2024-11-12 20:50:12,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-11-12 20:50:12,034 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-11-12 20:50:12,034 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 84 flow [2024-11-12 20:50:12,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:12,035 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:12,035 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:12,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:50:12,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:12,236 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:12,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash -628016482, now seen corresponding path program 1 times [2024-11-12 20:50:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:12,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894162435] [2024-11-12 20:50:12,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:12,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:12,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894162435] [2024-11-12 20:50:12,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894162435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:12,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:12,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:12,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404475473] [2024-11-12 20:50:12,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:12,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:12,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:12,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:12,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:12,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:12,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:12,344 INFO L124 PetriNetUnfolderBase]: 303/592 cut-off events. [2024-11-12 20:50:12,345 INFO L125 PetriNetUnfolderBase]: For 414/424 co-relation queries the response was YES. [2024-11-12 20:50:12,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 592 events. 303/592 cut-off events. For 414/424 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2625 event pairs, 189 based on Foata normal form. 18/547 useless extension candidates. Maximal degree in co-relation 1399. Up to 387 conditions per place. [2024-11-12 20:50:12,348 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-12 20:50:12,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 256 flow [2024-11-12 20:50:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-12 20:50:12,349 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-11-12 20:50:12,349 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 84 flow. Second operand 4 states and 82 transitions. [2024-11-12 20:50:12,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 256 flow [2024-11-12 20:50:12,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 229 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-12 20:50:12,352 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 97 flow [2024-11-12 20:50:12,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-11-12 20:50:12,353 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-11-12 20:50:12,355 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 97 flow [2024-11-12 20:50:12,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:12,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:12,355 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:12,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:50:12,356 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:12,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 828474346, now seen corresponding path program 1 times [2024-11-12 20:50:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:12,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757378292] [2024-11-12 20:50:12,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757378292] [2024-11-12 20:50:12,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757378292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939167072] [2024-11-12 20:50:12,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:12,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:12,415 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) [2024-11-12 20:50:12,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:50:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:12,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:50:12,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:12,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:50:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939167072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:50:12,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:50:12,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:50:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453270466] [2024-11-12 20:50:12,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:50:12,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:50:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:50:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:50:12,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:12,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 97 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:12,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:12,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:12,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:12,814 INFO L124 PetriNetUnfolderBase]: 568/1106 cut-off events. [2024-11-12 20:50:12,815 INFO L125 PetriNetUnfolderBase]: For 712/776 co-relation queries the response was YES. [2024-11-12 20:50:12,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 1106 events. 568/1106 cut-off events. For 712/776 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5527 event pairs, 151 based on Foata normal form. 60/1159 useless extension candidates. Maximal degree in co-relation 2754. Up to 315 conditions per place. [2024-11-12 20:50:12,821 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 115 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2024-11-12 20:50:12,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 131 transitions, 699 flow [2024-11-12 20:50:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:50:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:50:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 219 transitions. [2024-11-12 20:50:12,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.684375 [2024-11-12 20:50:12,825 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 97 flow. Second operand 10 states and 219 transitions. [2024-11-12 20:50:12,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 131 transitions, 699 flow [2024-11-12 20:50:12,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 131 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:12,831 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 159 flow [2024-11-12 20:50:12,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=159, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2024-11-12 20:50:12,832 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2024-11-12 20:50:12,833 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 159 flow [2024-11-12 20:50:12,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:12,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:12,833 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:12,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 20:50:13,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-12 20:50:13,034 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:13,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash -361161248, now seen corresponding path program 1 times [2024-11-12 20:50:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:13,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658552710] [2024-11-12 20:50:13,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:13,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:13,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:13,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658552710] [2024-11-12 20:50:13,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658552710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:13,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537389040] [2024-11-12 20:50:13,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:13,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:13,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:13,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:13,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:50:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:13,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:50:13,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:13,182 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:50:13,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537389040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:13,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:50:13,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-12 20:50:13,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684539700] [2024-11-12 20:50:13,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:13,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:50:13,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:50:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:50:13,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:13,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:13,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:13,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:13,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:13,331 INFO L124 PetriNetUnfolderBase]: 595/1154 cut-off events. [2024-11-12 20:50:13,331 INFO L125 PetriNetUnfolderBase]: For 1244/1258 co-relation queries the response was YES. [2024-11-12 20:50:13,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 1154 events. 595/1154 cut-off events. For 1244/1258 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5735 event pairs, 156 based on Foata normal form. 39/1145 useless extension candidates. Maximal degree in co-relation 3172. Up to 317 conditions per place. [2024-11-12 20:50:13,336 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 84 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2024-11-12 20:50:13,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 695 flow [2024-11-12 20:50:13,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-12 20:50:13,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-12 20:50:13,337 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 159 flow. Second operand 6 states and 116 transitions. [2024-11-12 20:50:13,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 695 flow [2024-11-12 20:50:13,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 95 transitions, 645 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-12 20:50:13,340 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 155 flow [2024-11-12 20:50:13,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2024-11-12 20:50:13,341 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2024-11-12 20:50:13,341 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 155 flow [2024-11-12 20:50:13,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:13,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:13,342 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:13,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 20:50:13,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:13,543 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:13,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:13,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1688903515, now seen corresponding path program 1 times [2024-11-12 20:50:13,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087956350] [2024-11-12 20:50:13,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:13,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:13,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:13,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087956350] [2024-11-12 20:50:13,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087956350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:13,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082001422] [2024-11-12 20:50:13,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:13,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:13,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:13,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:13,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:50:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:13,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:50:13,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:13,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:50:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:13,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082001422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:50:13,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:50:13,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:50:13,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722295212] [2024-11-12 20:50:13,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:50:13,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:50:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:50:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:50:13,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:13,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:13,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:13,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:13,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:13,970 INFO L124 PetriNetUnfolderBase]: 1099/2138 cut-off events. [2024-11-12 20:50:13,971 INFO L125 PetriNetUnfolderBase]: For 2551/2577 co-relation queries the response was YES. [2024-11-12 20:50:13,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6036 conditions, 2138 events. 1099/2138 cut-off events. For 2551/2577 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11667 event pairs, 372 based on Foata normal form. 117/2246 useless extension candidates. Maximal degree in co-relation 6022. Up to 736 conditions per place. [2024-11-12 20:50:13,980 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 149 selfloop transitions, 9 changer transitions 0/164 dead transitions. [2024-11-12 20:50:13,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 164 transitions, 1155 flow [2024-11-12 20:50:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:50:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:50:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-11-12 20:50:13,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.621875 [2024-11-12 20:50:13,984 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 155 flow. Second operand 10 states and 199 transitions. [2024-11-12 20:50:13,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 164 transitions, 1155 flow [2024-11-12 20:50:13,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 164 transitions, 1140 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-12 20:50:13,989 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 210 flow [2024-11-12 20:50:13,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2024-11-12 20:50:13,990 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2024-11-12 20:50:13,990 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 210 flow [2024-11-12 20:50:13,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:13,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:13,990 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:14,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 20:50:14,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:14,191 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:14,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:14,191 INFO L85 PathProgramCache]: Analyzing trace with hash -561828959, now seen corresponding path program 2 times [2024-11-12 20:50:14,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:14,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351749964] [2024-11-12 20:50:14,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:14,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:14,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351749964] [2024-11-12 20:50:14,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351749964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918068497] [2024-11-12 20:50:14,288 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:50:14,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:14,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:14,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:50:14,330 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:50:14,330 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:50:14,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 20:50:14,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:50:14,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:50:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:50:14,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918068497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:50:14,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:50:14,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 21 [2024-11-12 20:50:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560402955] [2024-11-12 20:50:14,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:50:14,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 20:50:14,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 20:50:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-12 20:50:14,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-12 20:50:14,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 210 flow. Second operand has 22 states, 22 states have (on average 8.5) internal successors, (187), 22 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:14,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:14,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-12 20:50:14,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:15,798 INFO L124 PetriNetUnfolderBase]: 3178/6016 cut-off events. [2024-11-12 20:50:15,798 INFO L125 PetriNetUnfolderBase]: For 10833/10886 co-relation queries the response was YES. [2024-11-12 20:50:15,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18310 conditions, 6016 events. 3178/6016 cut-off events. For 10833/10886 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 40158 event pairs, 112 based on Foata normal form. 176/6191 useless extension candidates. Maximal degree in co-relation 18294. Up to 911 conditions per place. [2024-11-12 20:50:15,828 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 541 selfloop transitions, 60 changer transitions 26/631 dead transitions. [2024-11-12 20:50:15,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 631 transitions, 4933 flow [2024-11-12 20:50:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-12 20:50:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-12 20:50:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 616 transitions. [2024-11-12 20:50:15,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-11-12 20:50:15,831 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 210 flow. Second operand 40 states and 616 transitions. [2024-11-12 20:50:15,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 631 transitions, 4933 flow [2024-11-12 20:50:15,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 631 transitions, 4563 flow, removed 111 selfloop flow, removed 2 redundant places. [2024-11-12 20:50:15,860 INFO L231 Difference]: Finished difference. Result has 108 places, 88 transitions, 605 flow [2024-11-12 20:50:15,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=605, PETRI_PLACES=108, PETRI_TRANSITIONS=88} [2024-11-12 20:50:15,861 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2024-11-12 20:50:15,862 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 88 transitions, 605 flow [2024-11-12 20:50:15,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.5) internal successors, (187), 22 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:15,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:15,862 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:15,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 20:50:16,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:16,067 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:16,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:16,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1966708957, now seen corresponding path program 2 times [2024-11-12 20:50:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:16,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313040101] [2024-11-12 20:50:16,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:16,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313040101] [2024-11-12 20:50:16,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313040101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680713482] [2024-11-12 20:50:16,169 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:50:16,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:16,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:16,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:16,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:50:16,210 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:50:16,210 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:50:16,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 20:50:16,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:50:16,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:50:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:50:16,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680713482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:50:16,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:50:16,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2024-11-12 20:50:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232997867] [2024-11-12 20:50:16,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:50:16,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 20:50:16,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 20:50:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:50:16,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-12 20:50:16,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 88 transitions, 605 flow. Second operand has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 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) [2024-11-12 20:50:16,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:16,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-12 20:50:16,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:17,828 INFO L124 PetriNetUnfolderBase]: 4753/8742 cut-off events. [2024-11-12 20:50:17,828 INFO L125 PetriNetUnfolderBase]: For 35445/35479 co-relation queries the response was YES. [2024-11-12 20:50:17,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32850 conditions, 8742 events. 4753/8742 cut-off events. For 35445/35479 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 60234 event pairs, 133 based on Foata normal form. 276/9016 useless extension candidates. Maximal degree in co-relation 32821. Up to 1298 conditions per place. [2024-11-12 20:50:17,862 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 381 selfloop transitions, 31 changer transitions 527/943 dead transitions. [2024-11-12 20:50:17,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 943 transitions, 9339 flow [2024-11-12 20:50:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-12 20:50:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-12 20:50:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 605 transitions. [2024-11-12 20:50:17,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2024-11-12 20:50:17,865 INFO L175 Difference]: Start difference. First operand has 108 places, 88 transitions, 605 flow. Second operand 40 states and 605 transitions. [2024-11-12 20:50:17,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 943 transitions, 9339 flow [2024-11-12 20:50:17,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 943 transitions, 7890 flow, removed 287 selfloop flow, removed 10 redundant places. [2024-11-12 20:50:17,944 INFO L231 Difference]: Finished difference. Result has 148 places, 76 transitions, 577 flow [2024-11-12 20:50:17,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=577, PETRI_PLACES=148, PETRI_TRANSITIONS=76} [2024-11-12 20:50:17,945 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 115 predicate places. [2024-11-12 20:50:17,945 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 76 transitions, 577 flow [2024-11-12 20:50:17,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 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) [2024-11-12 20:50:17,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:17,945 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:17,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:50:18,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:18,146 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:18,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2035920049, now seen corresponding path program 1 times [2024-11-12 20:50:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:18,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556709348] [2024-11-12 20:50:18,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:18,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:18,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556709348] [2024-11-12 20:50:18,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556709348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:18,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713730785] [2024-11-12 20:50:18,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:18,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:18,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:18,256 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:18,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:50:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:18,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 20:50:18,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:18,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:50:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713730785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:50:18,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:50:18,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-12 20:50:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168974457] [2024-11-12 20:50:18,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:50:18,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:50:18,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:50:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-12 20:50:18,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:18,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 76 transitions, 577 flow. Second operand has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:18,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:18,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:18,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:19,503 INFO L124 PetriNetUnfolderBase]: 3805/7537 cut-off events. [2024-11-12 20:50:19,504 INFO L125 PetriNetUnfolderBase]: For 49362/49441 co-relation queries the response was YES. [2024-11-12 20:50:19,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31789 conditions, 7537 events. 3805/7537 cut-off events. For 49362/49441 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 50570 event pairs, 395 based on Foata normal form. 266/7791 useless extension candidates. Maximal degree in co-relation 31749. Up to 1210 conditions per place. [2024-11-12 20:50:19,550 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 740 selfloop transitions, 50 changer transitions 96/896 dead transitions. [2024-11-12 20:50:19,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 896 transitions, 9205 flow [2024-11-12 20:50:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 20:50:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 20:50:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 575 transitions. [2024-11-12 20:50:19,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6911057692307693 [2024-11-12 20:50:19,552 INFO L175 Difference]: Start difference. First operand has 148 places, 76 transitions, 577 flow. Second operand 26 states and 575 transitions. [2024-11-12 20:50:19,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 896 transitions, 9205 flow [2024-11-12 20:50:19,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 896 transitions, 7744 flow, removed 280 selfloop flow, removed 14 redundant places. [2024-11-12 20:50:19,629 INFO L231 Difference]: Finished difference. Result has 142 places, 104 transitions, 854 flow [2024-11-12 20:50:19,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=854, PETRI_PLACES=142, PETRI_TRANSITIONS=104} [2024-11-12 20:50:19,630 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2024-11-12 20:50:19,630 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 104 transitions, 854 flow [2024-11-12 20:50:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:19,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:19,630 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:19,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 20:50:19,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:19,831 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:19,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash -770884302, now seen corresponding path program 1 times [2024-11-12 20:50:19,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:19,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424670798] [2024-11-12 20:50:19,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:19,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:19,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:19,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424670798] [2024-11-12 20:50:19,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424670798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:19,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725675641] [2024-11-12 20:50:19,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:19,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:19,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:19,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:50:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:20,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 20:50:20,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:20,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:50:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725675641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:50:20,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:50:20,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-12 20:50:20,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690787283] [2024-11-12 20:50:20,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:50:20,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:50:20,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:50:20,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-12 20:50:20,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-12 20:50:20,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 104 transitions, 854 flow. Second operand has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:20,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:20,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-12 20:50:20,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:21,912 INFO L124 PetriNetUnfolderBase]: 7528/15002 cut-off events. [2024-11-12 20:50:21,912 INFO L125 PetriNetUnfolderBase]: For 94148/94218 co-relation queries the response was YES. [2024-11-12 20:50:21,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63533 conditions, 15002 events. 7528/15002 cut-off events. For 94148/94218 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 111234 event pairs, 1090 based on Foata normal form. 651/15641 useless extension candidates. Maximal degree in co-relation 63491. Up to 2400 conditions per place. [2024-11-12 20:50:22,011 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 1452 selfloop transitions, 50 changer transitions 24/1536 dead transitions. [2024-11-12 20:50:22,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1536 transitions, 17182 flow [2024-11-12 20:50:22,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 20:50:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 20:50:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 515 transitions. [2024-11-12 20:50:22,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6189903846153846 [2024-11-12 20:50:22,014 INFO L175 Difference]: Start difference. First operand has 142 places, 104 transitions, 854 flow. Second operand 26 states and 515 transitions. [2024-11-12 20:50:22,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 1536 transitions, 17182 flow [2024-11-12 20:50:22,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1536 transitions, 15832 flow, removed 175 selfloop flow, removed 10 redundant places. [2024-11-12 20:50:22,424 INFO L231 Difference]: Finished difference. Result has 164 places, 132 transitions, 1146 flow [2024-11-12 20:50:22,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1146, PETRI_PLACES=164, PETRI_TRANSITIONS=132} [2024-11-12 20:50:22,425 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 131 predicate places. [2024-11-12 20:50:22,425 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 132 transitions, 1146 flow [2024-11-12 20:50:22,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:22,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:22,425 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:22,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 20:50:22,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-12 20:50:22,630 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:22,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash -283193284, now seen corresponding path program 2 times [2024-11-12 20:50:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:22,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681687958] [2024-11-12 20:50:22,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:23,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681687958] [2024-11-12 20:50:23,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681687958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861017894] [2024-11-12 20:50:23,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:50:23,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:23,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:23,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:23,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 20:50:23,120 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:50:23,120 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:50:23,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 20:50:23,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-12 20:50:23,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:50:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-12 20:50:23,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861017894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:50:23,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:50:23,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5, 5] total 33 [2024-11-12 20:50:23,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517182076] [2024-11-12 20:50:23,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:50:23,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-12 20:50:23,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-12 20:50:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 20:50:23,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-12 20:50:23,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 132 transitions, 1146 flow. Second operand has 34 states, 34 states have (on average 8.705882352941176) internal successors, (296), 34 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:23,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:23,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-12 20:50:23,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:27,029 INFO L124 PetriNetUnfolderBase]: 7943/15664 cut-off events. [2024-11-12 20:50:27,029 INFO L125 PetriNetUnfolderBase]: For 99568/99654 co-relation queries the response was YES. [2024-11-12 20:50:27,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69937 conditions, 15664 events. 7943/15664 cut-off events. For 99568/99654 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 115837 event pairs, 158 based on Foata normal form. 162/15824 useless extension candidates. Maximal degree in co-relation 69887. Up to 2536 conditions per place. [2024-11-12 20:50:27,120 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 1148 selfloop transitions, 43 changer transitions 1129/2324 dead transitions. [2024-11-12 20:50:27,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 2324 transitions, 24914 flow [2024-11-12 20:50:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-12 20:50:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2024-11-12 20:50:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 1447 transitions. [2024-11-12 20:50:27,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4037388392857143 [2024-11-12 20:50:27,124 INFO L175 Difference]: Start difference. First operand has 164 places, 132 transitions, 1146 flow. Second operand 112 states and 1447 transitions. [2024-11-12 20:50:27,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 2324 transitions, 24914 flow [2024-11-12 20:50:27,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 2324 transitions, 22862 flow, removed 282 selfloop flow, removed 24 redundant places. [2024-11-12 20:50:27,506 INFO L231 Difference]: Finished difference. Result has 254 places, 87 transitions, 823 flow [2024-11-12 20:50:27,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=823, PETRI_PLACES=254, PETRI_TRANSITIONS=87} [2024-11-12 20:50:27,507 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 221 predicate places. [2024-11-12 20:50:27,507 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 87 transitions, 823 flow [2024-11-12 20:50:27,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.705882352941176) internal successors, (296), 34 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:27,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:27,508 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:27,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 20:50:27,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-12 20:50:27,709 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:50:27,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash -155937306, now seen corresponding path program 2 times [2024-11-12 20:50:27,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180277727] [2024-11-12 20:50:27,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:27,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:28,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:28,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180277727] [2024-11-12 20:50:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180277727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:28,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503276366] [2024-11-12 20:50:28,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:50:28,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:28,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:28,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:28,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 20:50:28,203 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:50:28,203 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:50:28,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 20:50:28,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-12 20:50:28,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:50:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-12 20:50:28,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503276366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:50:28,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:50:28,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5, 5] total 37 [2024-11-12 20:50:28,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800923781] [2024-11-12 20:50:28,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:50:28,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-12 20:50:28,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-12 20:50:28,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1146, Unknown=0, NotChecked=0, Total=1406 [2024-11-12 20:50:28,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-12 20:50:28,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 87 transitions, 823 flow. Second operand has 38 states, 38 states have (on average 8.68421052631579) internal successors, (330), 38 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:28,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:28,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-12 20:50:28,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:29,835 INFO L124 PetriNetUnfolderBase]: 4164/8514 cut-off events. [2024-11-12 20:50:29,835 INFO L125 PetriNetUnfolderBase]: For 68108/68108 co-relation queries the response was YES. [2024-11-12 20:50:29,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37182 conditions, 8514 events. 4164/8514 cut-off events. For 68108/68108 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 56750 event pairs, 2 based on Foata normal form. 200/8713 useless extension candidates. Maximal degree in co-relation 37147. Up to 1902 conditions per place. [2024-11-12 20:50:29,864 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 0 selfloop transitions, 0 changer transitions 1355/1355 dead transitions. [2024-11-12 20:50:29,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 1355 transitions, 17619 flow [2024-11-12 20:50:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-12 20:50:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-12 20:50:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 461 transitions. [2024-11-12 20:50:29,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42371323529411764 [2024-11-12 20:50:29,867 INFO L175 Difference]: Start difference. First operand has 254 places, 87 transitions, 823 flow. Second operand 34 states and 461 transitions. [2024-11-12 20:50:29,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 1355 transitions, 17619 flow [2024-11-12 20:50:29,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 1355 transitions, 9467 flow, removed 2569 selfloop flow, removed 59 redundant places. [2024-11-12 20:50:29,958 INFO L231 Difference]: Finished difference. Result has 135 places, 0 transitions, 0 flow [2024-11-12 20:50:29,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=0, PETRI_PLACES=135, PETRI_TRANSITIONS=0} [2024-11-12 20:50:29,958 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2024-11-12 20:50:29,958 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 0 transitions, 0 flow [2024-11-12 20:50:29,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.68421052631579) internal successors, (330), 38 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2024-11-12 20:50:29,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-12 20:50:29,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-12 20:50:29,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-12 20:50:29,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-12 20:50:29,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 20:50:30,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 20:50:30,163 INFO L421 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:30,168 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 20:50:30,168 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 20:50:30,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:50:30 BasicIcfg [2024-11-12 20:50:30,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 20:50:30,172 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:50:30,172 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:50:30,172 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:50:30,172 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:50:10" (3/4) ... [2024-11-12 20:50:30,173 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 20:50:30,175 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-12 20:50:30,175 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-12 20:50:30,177 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-12 20:50:30,177 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-12 20:50:30,177 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-12 20:50:30,177 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-12 20:50:30,238 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 20:50:30,239 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 20:50:30,239 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:50:30,239 INFO L158 Benchmark]: Toolchain (without parser) took 20405.44ms. Allocated memory was 195.0MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 165.7MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 824.4MB. Max. memory is 16.1GB. [2024-11-12 20:50:30,239 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 125.8MB. Free memory was 87.0MB in the beginning and 86.8MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:50:30,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.11ms. Allocated memory is still 195.0MB. Free memory was 165.7MB in the beginning and 141.8MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-12 20:50:30,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.08ms. Allocated memory is still 195.0MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:50:30,239 INFO L158 Benchmark]: Boogie Preprocessor took 52.57ms. Allocated memory is still 195.0MB. Free memory was 139.7MB in the beginning and 137.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 20:50:30,240 INFO L158 Benchmark]: RCFGBuilder took 380.49ms. Allocated memory is still 195.0MB. Free memory was 137.6MB in the beginning and 112.5MB in the end (delta: 25.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-12 20:50:30,240 INFO L158 Benchmark]: TraceAbstraction took 19446.83ms. Allocated memory was 195.0MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 111.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 897.8MB. Max. memory is 16.1GB. [2024-11-12 20:50:30,240 INFO L158 Benchmark]: Witness Printer took 66.73ms. Allocated memory is still 2.7GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 20:50:30,242 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73ms. Allocated memory is still 125.8MB. Free memory was 87.0MB in the beginning and 86.8MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.11ms. Allocated memory is still 195.0MB. Free memory was 165.7MB in the beginning and 141.8MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.08ms. Allocated memory is still 195.0MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.57ms. Allocated memory is still 195.0MB. Free memory was 139.7MB in the beginning and 137.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 380.49ms. Allocated memory is still 195.0MB. Free memory was 137.6MB in the beginning and 112.5MB in the end (delta: 25.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19446.83ms. Allocated memory was 195.0MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 111.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 897.8MB. Max. memory is 16.1GB. * Witness Printer took 66.73ms. Allocated memory is still 2.7GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: 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 5 procedures, 55 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.4s, OverallIterations: 14, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5182 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5132 mSDsluCounter, 1513 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1490 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5238 IncrementalHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 23 mSDtfsCounter, 5238 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 958 GetRequests, 506 SyntacticMatches, 6 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10476 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1146occurred in iteration=12, InterpolantAutomatonStates: 324, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 535 NumberOfCodeBlocks, 439 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 731 ConstructedInterpolants, 0 QuantifiedInterpolants, 1951 SizeOfPredicates, 44 NumberOfNonLiveVariables, 784 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 32 InterpolantComputations, 6 PerfectInterpolantSequences, 932/1880 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! [2024-11-12 20:50:30,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE