./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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/weaver/clever.wvr.c -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 f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:09:53,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:09:53,709 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:09:53,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:09:53,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:09:53,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:09:53,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:09:53,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:09:53,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:09:53,773 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:09:53,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:09:53,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:09:53,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:09:53,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:09:53,778 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:09:53,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:09:53,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:09:53,778 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:09:53,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:09:53,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:09:53,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:09:53,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:09:53,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:09:53,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:09:53,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:09:53,785 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:09:53,785 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:09:53,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:09:53,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:09:53,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:09:53,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:09:53,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:09:53,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:09:53,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:09:53,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:09:53,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:09:53,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:09:53,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:09:53,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:09:53,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:09:53,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:09:53,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:09:53,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:09:53,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:09:53,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2024-11-09 15:09:54,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:09:54,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:09:54,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:09:54,086 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:09:54,087 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:09:54,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/clever.wvr.c [2024-11-09 15:09:55,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:09:55,713 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:09:55,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2024-11-09 15:09:55,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c1aff24/ebfc5e388ba44c2ea9e66e5c6000c3cb/FLAG5fbcabb15 [2024-11-09 15:09:56,102 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c1aff24/ebfc5e388ba44c2ea9e66e5c6000c3cb [2024-11-09 15:09:56,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:09:56,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:09:56,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:09:56,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:09:56,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:09:56,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e121374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56, skipping insertion in model container [2024-11-09 15:09:56,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,133 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:09:56,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:09:56,344 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:09:56,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:09:56,380 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:09:56,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56 WrapperNode [2024-11-09 15:09:56,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:09:56,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:09:56,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:09:56,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:09:56,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,411 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-11-09 15:09:56,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:09:56,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:09:56,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:09:56,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:09:56,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,434 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]. [2024-11-09 15:09:56,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:09:56,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:09:56,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:09:56,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:09:56,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (1/1) ... [2024-11-09 15:09:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:09:56,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:56,484 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) [2024-11-09 15:09:56,487 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 [2024-11-09 15:09:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:09:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:09:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:09:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:09:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:09:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:09:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:09:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:09:56,528 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:09:56,616 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:09:56,618 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:09:56,801 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:09:56,801 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:09:57,015 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:09:57,017 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 15:09:57,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:09:57 BoogieIcfgContainer [2024-11-09 15:09:57,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:09:57,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:09:57,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:09:57,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:09:57,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:09:56" (1/3) ... [2024-11-09 15:09:57,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313924fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:09:57, skipping insertion in model container [2024-11-09 15:09:57,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:56" (2/3) ... [2024-11-09 15:09:57,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313924fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:09:57, skipping insertion in model container [2024-11-09 15:09:57,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:09:57" (3/3) ... [2024-11-09 15:09:57,030 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2024-11-09 15:09:57,047 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:09:57,048 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 15:09:57,048 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:09:57,099 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:09:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 30 transitions, 74 flow [2024-11-09 15:09:57,160 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-11-09 15:09:57,160 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:09:57,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 3/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 67 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-09 15:09:57,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 30 transitions, 74 flow [2024-11-09 15:09:57,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 26 transitions, 61 flow [2024-11-09 15:09:57,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:09:57,185 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;@5b5d7dc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:09:57,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-09 15:09:57,194 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:09:57,194 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-09 15:09:57,194 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:09:57,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:57,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 15:09:57,196 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:09:57,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1167127390, now seen corresponding path program 1 times [2024-11-09 15:09:57,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:57,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75238064] [2024-11-09 15:09:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:57,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:57,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:57,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75238064] [2024-11-09 15:09:57,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75238064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:57,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:57,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:57,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388329894] [2024-11-09 15:09:57,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:57,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:57,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:57,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:57,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:57,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:09:57,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:57,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:57,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:09:57,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:57,739 INFO L124 PetriNetUnfolderBase]: 237/458 cut-off events. [2024-11-09 15:09:57,740 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-09 15:09:57,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 458 events. 237/458 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2245 event pairs, 85 based on Foata normal form. 10/333 useless extension candidates. Maximal degree in co-relation 816. Up to 216 conditions per place. [2024-11-09 15:09:57,747 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 33 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-11-09 15:09:57,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 180 flow [2024-11-09 15:09:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-09 15:09:57,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-11-09 15:09:57,765 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 61 flow. Second operand 4 states and 82 transitions. [2024-11-09 15:09:57,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 180 flow [2024-11-09 15:09:57,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 171 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:57,772 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 84 flow [2024-11-09 15:09:57,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-09 15:09:57,777 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-11-09 15:09:57,778 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 84 flow [2024-11-09 15:09:57,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:57,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:57,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 15:09:57,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:09:57,779 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:09:57,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1167127423, now seen corresponding path program 1 times [2024-11-09 15:09:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:57,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275789447] [2024-11-09 15:09:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:57,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:57,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275789447] [2024-11-09 15:09:57,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275789447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:57,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:57,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869826805] [2024-11-09 15:09:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:57,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:57,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:57,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:57,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:57,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:09:57,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:57,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:57,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:09:57,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:58,050 INFO L124 PetriNetUnfolderBase]: 237/442 cut-off events. [2024-11-09 15:09:58,051 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-11-09 15:09:58,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 442 events. 237/442 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2037 event pairs, 98 based on Foata normal form. 20/380 useless extension candidates. Maximal degree in co-relation 675. Up to 269 conditions per place. [2024-11-09 15:09:58,058 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 22 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2024-11-09 15:09:58,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 146 flow [2024-11-09 15:09:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-11-09 15:09:58,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-11-09 15:09:58,061 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 84 flow. Second operand 4 states and 67 transitions. [2024-11-09 15:09:58,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 146 flow [2024-11-09 15:09:58,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:09:58,065 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 88 flow [2024-11-09 15:09:58,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-11-09 15:09:58,066 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-09 15:09:58,067 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 88 flow [2024-11-09 15:09:58,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:58,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:58,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:58,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:09:58,068 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:09:58,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:58,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1806116892, now seen corresponding path program 1 times [2024-11-09 15:09:58,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:58,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193005970] [2024-11-09 15:09:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:58,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193005970] [2024-11-09 15:09:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193005970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:58,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498370093] [2024-11-09 15:09:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:58,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:58,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:58,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:09:58,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 88 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) [2024-11-09 15:09:58,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:58,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:09:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:58,277 INFO L124 PetriNetUnfolderBase]: 246/467 cut-off events. [2024-11-09 15:09:58,277 INFO L125 PetriNetUnfolderBase]: For 192/198 co-relation queries the response was YES. [2024-11-09 15:09:58,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 467 events. 246/467 cut-off events. For 192/198 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2187 event pairs, 88 based on Foata normal form. 24/420 useless extension candidates. Maximal degree in co-relation 755. Up to 234 conditions per place. [2024-11-09 15:09:58,284 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 27 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-09 15:09:58,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 191 flow [2024-11-09 15:09:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-09 15:09:58,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-09 15:09:58,288 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 88 flow. Second operand 4 states and 69 transitions. [2024-11-09 15:09:58,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 191 flow [2024-11-09 15:09:58,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 181 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:58,291 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 86 flow [2024-11-09 15:09:58,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-11-09 15:09:58,293 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-11-09 15:09:58,293 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 86 flow [2024-11-09 15:09:58,294 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) [2024-11-09 15:09:58,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:58,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:58,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:09:58,295 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:09:58,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1821212089, now seen corresponding path program 1 times [2024-11-09 15:09:58,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:58,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729378357] [2024-11-09 15:09:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:58,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:58,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:58,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729378357] [2024-11-09 15:09:58,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729378357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:58,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:58,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:58,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922133724] [2024-11-09 15:09:58,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:58,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:58,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:58,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:58,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:09:58,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:58,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:58,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:09:58,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:58,516 INFO L124 PetriNetUnfolderBase]: 366/703 cut-off events. [2024-11-09 15:09:58,516 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-11-09 15:09:58,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 703 events. 366/703 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3594 event pairs, 60 based on Foata normal form. 0/677 useless extension candidates. Maximal degree in co-relation 1241. Up to 371 conditions per place. [2024-11-09 15:09:58,521 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 37 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-09 15:09:58,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 237 flow [2024-11-09 15:09:58,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-09 15:09:58,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:09:58,524 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 86 flow. Second operand 4 states and 80 transitions. [2024-11-09 15:09:58,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 237 flow [2024-11-09 15:09:58,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 223 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:58,527 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 100 flow [2024-11-09 15:09:58,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=100, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-11-09 15:09:58,528 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-11-09 15:09:58,528 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 100 flow [2024-11-09 15:09:58,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:58,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:58,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:58,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:09:58,529 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:09:58,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:58,529 INFO L85 PathProgramCache]: Analyzing trace with hash 155049155, now seen corresponding path program 1 times [2024-11-09 15:09:58,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:58,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749456810] [2024-11-09 15:09:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:58,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749456810] [2024-11-09 15:09:58,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749456810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:58,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:58,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511337452] [2024-11-09 15:09:58,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:58,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:58,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:09:58,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 100 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) [2024-11-09 15:09:58,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:58,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:09:58,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:58,744 INFO L124 PetriNetUnfolderBase]: 500/976 cut-off events. [2024-11-09 15:09:58,744 INFO L125 PetriNetUnfolderBase]: For 504/556 co-relation queries the response was YES. [2024-11-09 15:09:58,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 976 events. 500/976 cut-off events. For 504/556 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5338 event pairs, 106 based on Foata normal form. 0/857 useless extension candidates. Maximal degree in co-relation 1815. Up to 456 conditions per place. [2024-11-09 15:09:58,751 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 47 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-09 15:09:58,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 318 flow [2024-11-09 15:09:58,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-09 15:09:58,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:09:58,753 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 100 flow. Second operand 4 states and 80 transitions. [2024-11-09 15:09:58,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 318 flow [2024-11-09 15:09:58,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:09:58,757 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 118 flow [2024-11-09 15:09:58,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-11-09 15:09:58,759 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-11-09 15:09:58,759 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 118 flow [2024-11-09 15:09:58,760 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) [2024-11-09 15:09:58,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:58,760 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:58,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:09:58,760 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:09:58,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2132153755, now seen corresponding path program 1 times [2024-11-09 15:09:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:58,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980186590] [2024-11-09 15:09:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:58,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:58,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:58,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980186590] [2024-11-09 15:09:58,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980186590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:58,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401765544] [2024-11-09 15:09:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:58,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:58,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:58,841 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) [2024-11-09 15:09:58,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:09:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:58,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:09:58,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:58,953 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401765544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:58,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:58,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:09:58,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177262431] [2024-11-09 15:09:58,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:58,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:09:58,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:09:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:58,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:09:58,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:58,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:58,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:09:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:59,159 INFO L124 PetriNetUnfolderBase]: 475/929 cut-off events. [2024-11-09 15:09:59,160 INFO L125 PetriNetUnfolderBase]: For 524/560 co-relation queries the response was YES. [2024-11-09 15:09:59,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 929 events. 475/929 cut-off events. For 524/560 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5104 event pairs, 28 based on Foata normal form. 28/925 useless extension candidates. Maximal degree in co-relation 2049. Up to 258 conditions per place. [2024-11-09 15:09:59,168 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 58 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-11-09 15:09:59,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 392 flow [2024-11-09 15:09:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:09:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:09:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-11-09 15:09:59,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-09 15:09:59,170 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 118 flow. Second operand 6 states and 117 transitions. [2024-11-09 15:09:59,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 392 flow [2024-11-09 15:09:59,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:09:59,173 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 130 flow [2024-11-09 15:09:59,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-11-09 15:09:59,174 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-11-09 15:09:59,174 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 130 flow [2024-11-09 15:09:59,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:59,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:59,175 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:59,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:59,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 15:09:59,379 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:09:59,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1672257307, now seen corresponding path program 1 times [2024-11-09 15:09:59,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:59,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195569312] [2024-11-09 15:09:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:59,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:59,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:59,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195569312] [2024-11-09 15:09:59,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195569312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:59,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575605218] [2024-11-09 15:09:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:59,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:59,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:59,436 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) [2024-11-09 15:09:59,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:09:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:59,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:09:59,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:59,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:09:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:59,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575605218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:09:59,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:09:59,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:09:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166087557] [2024-11-09 15:09:59,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:09:59,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:09:59,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:09:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:09:59,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:09:59,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 130 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:09:59,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:59,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:09:59,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:59,975 INFO L124 PetriNetUnfolderBase]: 1057/2087 cut-off events. [2024-11-09 15:09:59,975 INFO L125 PetriNetUnfolderBase]: For 1799/1874 co-relation queries the response was YES. [2024-11-09 15:09:59,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5665 conditions, 2087 events. 1057/2087 cut-off events. For 1799/1874 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12673 event pairs, 213 based on Foata normal form. 84/2165 useless extension candidates. Maximal degree in co-relation 3767. Up to 463 conditions per place. [2024-11-09 15:09:59,992 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 108 selfloop transitions, 13 changer transitions 0/128 dead transitions. [2024-11-09 15:09:59,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 128 transitions, 748 flow [2024-11-09 15:09:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:09:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:09:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-11-09 15:09:59,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-11-09 15:09:59,994 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 130 flow. Second operand 10 states and 205 transitions. [2024-11-09 15:09:59,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 128 transitions, 748 flow [2024-11-09 15:10:00,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 128 transitions, 720 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 15:10:00,002 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 204 flow [2024-11-09 15:10:00,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-11-09 15:10:00,003 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-11-09 15:10:00,003 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 204 flow [2024-11-09 15:10:00,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:00,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:00,004 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:00,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:10:00,208 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,SelfDestructingSolverStorable6 [2024-11-09 15:10:00,209 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:10:00,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:00,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1979877081, now seen corresponding path program 1 times [2024-11-09 15:10:00,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:00,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354028292] [2024-11-09 15:10:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:00,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:00,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354028292] [2024-11-09 15:10:00,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354028292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:00,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013521681] [2024-11-09 15:10:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:00,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:00,294 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) [2024-11-09 15:10:00,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:10:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:00,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:10:00,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:10:00,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:10:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013521681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:00,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2024-11-09 15:10:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767142269] [2024-11-09 15:10:00,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:00,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 15:10:00,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 15:10:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:10:00,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:10:00,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:00,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:00,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:10:00,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:00,737 INFO L124 PetriNetUnfolderBase]: 1473/2804 cut-off events. [2024-11-09 15:10:00,737 INFO L125 PetriNetUnfolderBase]: For 3468/3552 co-relation queries the response was YES. [2024-11-09 15:10:00,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 2804 events. 1473/2804 cut-off events. For 3468/3552 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17440 event pairs, 253 based on Foata normal form. 0/2802 useless extension candidates. Maximal degree in co-relation 6843. Up to 584 conditions per place. [2024-11-09 15:10:00,755 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 132 selfloop transitions, 7 changer transitions 12/158 dead transitions. [2024-11-09 15:10:00,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 158 transitions, 1219 flow [2024-11-09 15:10:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:10:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:10:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-11-09 15:10:00,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2024-11-09 15:10:00,757 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 204 flow. Second operand 8 states and 151 transitions. [2024-11-09 15:10:00,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 158 transitions, 1219 flow [2024-11-09 15:10:00,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 158 transitions, 1135 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-09 15:10:00,768 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 203 flow [2024-11-09 15:10:00,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=203, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2024-11-09 15:10:00,770 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-11-09 15:10:00,770 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 203 flow [2024-11-09 15:10:00,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:00,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:00,771 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 15:10:00,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:10:00,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:00,972 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:10:00,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1246916768, now seen corresponding path program 1 times [2024-11-09 15:10:00,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:00,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205451267] [2024-11-09 15:10:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:01,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:01,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205451267] [2024-11-09 15:10:01,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205451267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:01,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591486371] [2024-11-09 15:10:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:01,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:01,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:01,031 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) [2024-11-09 15:10:01,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:10:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:01,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:10:01,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:10:01,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:10:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591486371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:01,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:01,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2024-11-09 15:10:01,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958257039] [2024-11-09 15:10:01,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:01,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 15:10:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 15:10:01,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:10:01,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:10:01,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 203 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:01,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:01,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:10:01,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:01,579 INFO L124 PetriNetUnfolderBase]: 2070/3964 cut-off events. [2024-11-09 15:10:01,579 INFO L125 PetriNetUnfolderBase]: For 4955/4955 co-relation queries the response was YES. [2024-11-09 15:10:01,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11940 conditions, 3964 events. 2070/3964 cut-off events. For 4955/4955 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 25937 event pairs, 278 based on Foata normal form. 0/3958 useless extension candidates. Maximal degree in co-relation 10728. Up to 935 conditions per place. [2024-11-09 15:10:01,609 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 112 selfloop transitions, 12 changer transitions 0/130 dead transitions. [2024-11-09 15:10:01,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 935 flow [2024-11-09 15:10:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:10:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:10:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-11-09 15:10:01,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5962962962962963 [2024-11-09 15:10:01,612 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 203 flow. Second operand 9 states and 161 transitions. [2024-11-09 15:10:01,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 935 flow [2024-11-09 15:10:01,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 834 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-11-09 15:10:01,627 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 258 flow [2024-11-09 15:10:01,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-09 15:10:01,628 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-11-09 15:10:01,628 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 258 flow [2024-11-09 15:10:01,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:01,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:01,628 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2024-11-09 15:10:01,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:10:01,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:01,829 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-09 15:10:01,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2044337160, now seen corresponding path program 2 times [2024-11-09 15:10:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616899162] [2024-11-09 15:10:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:01,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:01,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616899162] [2024-11-09 15:10:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616899162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:01,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832644505] [2024-11-09 15:10:01,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:10:01,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:01,980 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) [2024-11-09 15:10:01,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:10:02,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:10:02,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:10:02,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:10:02,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:10:02,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:10:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832644505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:02,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2024-11-09 15:10:02,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363525469] [2024-11-09 15:10:02,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:02,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:10:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:10:02,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:10:02,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-09 15:10:02,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 258 flow. Second operand has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:02,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:02,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-09 15:10:02,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:02,763 INFO L124 PetriNetUnfolderBase]: 2478/4684 cut-off events. [2024-11-09 15:10:02,763 INFO L125 PetriNetUnfolderBase]: For 6688/6688 co-relation queries the response was YES. [2024-11-09 15:10:02,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14141 conditions, 4684 events. 2478/4684 cut-off events. For 6688/6688 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 30743 event pairs, 251 based on Foata normal form. 120/4799 useless extension candidates. Maximal degree in co-relation 10657. Up to 761 conditions per place. [2024-11-09 15:10:02,780 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 0 selfloop transitions, 0 changer transitions 188/188 dead transitions. [2024-11-09 15:10:02,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 188 transitions, 1214 flow [2024-11-09 15:10:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 15:10:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 15:10:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2024-11-09 15:10:02,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-09 15:10:02,782 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 258 flow. Second operand 14 states and 260 transitions. [2024-11-09 15:10:02,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 188 transitions, 1214 flow [2024-11-09 15:10:02,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 188 transitions, 1115 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-11-09 15:10:02,802 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2024-11-09 15:10:02,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2024-11-09 15:10:02,803 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-11-09 15:10:02,803 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2024-11-09 15:10:02,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:10:02,806 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-11-09 15:10:02,806 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-11-09 15:10:02,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-09 15:10:02,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-09 15:10:02,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-09 15:10:02,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-09 15:10:02,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2024-11-09 15:10:02,807 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2024-11-09 15:10:02,808 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2024-11-09 15:10:02,808 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2024-11-09 15:10:02,808 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-09 15:10:02,808 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-09 15:10:02,808 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-09 15:10:02,808 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-09 15:10:02,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:10:03,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 15:10:03,013 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:03,018 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 15:10:03,018 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 15:10:03,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:10:03 BasicIcfg [2024-11-09 15:10:03,022 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 15:10:03,022 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 15:10:03,022 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 15:10:03,022 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 15:10:03,023 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:09:57" (3/4) ... [2024-11-09 15:10:03,024 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 15:10:03,027 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-09 15:10:03,027 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-09 15:10:03,031 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 77 nodes and edges [2024-11-09 15:10:03,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 15:10:03,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-09 15:10:03,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 15:10:03,119 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 15:10:03,120 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 15:10:03,120 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 15:10:03,120 INFO L158 Benchmark]: Toolchain (without parser) took 7015.46ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 129.5MB in the beginning and 59.8MB in the end (delta: 69.7MB). Peak memory consumption was 107.8MB. Max. memory is 16.1GB. [2024-11-09 15:10:03,120 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 113.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:10:03,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.86ms. Allocated memory is still 165.7MB. Free memory was 128.9MB in the beginning and 116.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 15:10:03,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.23ms. Allocated memory is still 165.7MB. Free memory was 116.3MB in the beginning and 114.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:10:03,121 INFO L158 Benchmark]: Boogie Preprocessor took 40.97ms. Allocated memory is still 165.7MB. Free memory was 114.7MB in the beginning and 112.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:10:03,121 INFO L158 Benchmark]: RCFGBuilder took 563.99ms. Allocated memory is still 165.7MB. Free memory was 112.6MB in the beginning and 77.0MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-09 15:10:03,121 INFO L158 Benchmark]: TraceAbstraction took 6001.37ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 76.4MB in the beginning and 65.0MB in the end (delta: 11.4MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2024-11-09 15:10:03,122 INFO L158 Benchmark]: Witness Printer took 97.73ms. Allocated memory is still 199.2MB. Free memory was 65.0MB in the beginning and 59.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 15:10:03,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 113.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.86ms. Allocated memory is still 165.7MB. Free memory was 128.9MB in the beginning and 116.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.23ms. Allocated memory is still 165.7MB. Free memory was 116.3MB in the beginning and 114.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.97ms. Allocated memory is still 165.7MB. Free memory was 114.7MB in the beginning and 112.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 563.99ms. Allocated memory is still 165.7MB. Free memory was 112.6MB in the beginning and 77.0MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6001.37ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 76.4MB in the beginning and 65.0MB in the end (delta: 11.4MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. * Witness Printer took 97.73ms. Allocated memory is still 199.2MB. Free memory was 65.0MB in the beginning and 59.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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, 49 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: 5.9s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 595 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 562 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1111 IncrementalHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 15 mSDtfsCounter, 1111 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=9, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 154 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 528 SizeOfPredicates, 13 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 50/124 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! [2024-11-09 15:10:03,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE