./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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/popl20-figure1.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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:55:08,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:55:08,771 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:55:08,778 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:55:08,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:55:08,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:55:08,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:55:08,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:55:08,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:55:08,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:55:08,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:55:08,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:55:08,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:55:08,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:55:08,808 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:55:08,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:55:08,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:55:08,809 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:55:08,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:55:08,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:55:08,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:55:08,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:55:08,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:55:08,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:55:08,815 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:55:08,816 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:55:08,816 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:55:08,816 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:55:08,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:55:08,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:55:08,817 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:55:08,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:55:08,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:55:08,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:55:08,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:55:08,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:55:08,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:55:08,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:55:08,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:55:08,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:55:08,819 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:55:08,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:55:08,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:55:08,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:55:08,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-17 07:55:09,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:55:09,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:55:09,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:55:09,068 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:55:09,068 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:55:09,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-17 07:55:10,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:55:10,713 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:55:10,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-17 07:55:10,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1df5d812d/74e49299d68944e78d8d301caf1edc20/FLAGda565c6c0 [2024-11-17 07:55:10,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1df5d812d/74e49299d68944e78d8d301caf1edc20 [2024-11-17 07:55:10,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:55:10,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:55:10,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:55:10,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:55:10,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:55:10,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:55:10" (1/1) ... [2024-11-17 07:55:10,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f3e54d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:10, skipping insertion in model container [2024-11-17 07:55:10,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:55:10" (1/1) ... [2024-11-17 07:55:10,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:55:11,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:55:11,018 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:55:11,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:55:11,055 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:55:11,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11 WrapperNode [2024-11-17 07:55:11,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:55:11,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:55:11,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:55:11,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:55:11,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,086 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2024-11-17 07:55:11,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:55:11,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:55:11,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:55:11,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:55:11,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,110 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]. [2024-11-17 07:55:11,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,114 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:55:11,118 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:55:11,118 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:55:11,118 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:55:11,119 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (1/1) ... [2024-11-17 07:55:11,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:55:11,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:11,157 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) [2024-11-17 07:55:11,164 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 [2024-11-17 07:55:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:55:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:55:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:55:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:55:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:55:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:55:11,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:55:11,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:55:11,204 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:55:11,280 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:55:11,282 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:55:11,406 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:55:11,406 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:55:11,489 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:55:11,490 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:55:11,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:55:11 BoogieIcfgContainer [2024-11-17 07:55:11,490 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:55:11,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:55:11,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:55:11,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:55:11,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:55:10" (1/3) ... [2024-11-17 07:55:11,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f24cc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:55:11, skipping insertion in model container [2024-11-17 07:55:11,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:11" (2/3) ... [2024-11-17 07:55:11,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f24cc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:55:11, skipping insertion in model container [2024-11-17 07:55:11,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:55:11" (3/3) ... [2024-11-17 07:55:11,499 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-17 07:55:11,515 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:55:11,515 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:55:11,515 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:55:11,564 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:55:11,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 90 flow [2024-11-17 07:55:11,633 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-17 07:55:11,634 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:55:11,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 4/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-17 07:55:11,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 90 flow [2024-11-17 07:55:11,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 77 flow [2024-11-17 07:55:11,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:55:11,661 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;@c9f0483, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:55:11,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-17 07:55:11,666 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:55:11,667 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:55:11,667 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:55:11,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:11,668 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:55:11,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:11,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:11,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2008030125, now seen corresponding path program 1 times [2024-11-17 07:55:11,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:11,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907263895] [2024-11-17 07:55:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:11,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:11,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:11,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907263895] [2024-11-17 07:55:11,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907263895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:11,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:11,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:55:11,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975070479] [2024-11-17 07:55:11,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:11,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:11,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:11,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:11,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:11,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:11,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:11,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:12,026 INFO L124 PetriNetUnfolderBase]: 194/431 cut-off events. [2024-11-17 07:55:12,026 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-17 07:55:12,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 431 events. 194/431 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2189 event pairs, 77 based on Foata normal form. 50/382 useless extension candidates. Maximal degree in co-relation 741. Up to 289 conditions per place. [2024-11-17 07:55:12,033 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 25 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2024-11-17 07:55:12,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 153 flow [2024-11-17 07:55:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-17 07:55:12,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-11-17 07:55:12,046 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 77 flow. Second operand 3 states and 75 transitions. [2024-11-17 07:55:12,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 153 flow [2024-11-17 07:55:12,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 145 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:55:12,051 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 84 flow [2024-11-17 07:55:12,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-11-17 07:55:12,056 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-11-17 07:55:12,056 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 84 flow [2024-11-17 07:55:12,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:12,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:12,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:12,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:55:12,058 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:12,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:12,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1276625321, now seen corresponding path program 1 times [2024-11-17 07:55:12,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:12,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537222970] [2024-11-17 07:55:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:12,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:12,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537222970] [2024-11-17 07:55:12,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537222970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:12,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:12,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:55:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715032638] [2024-11-17 07:55:12,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:12,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:12,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:55:12,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 84 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) [2024-11-17 07:55:12,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:12,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:55:12,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:12,343 INFO L124 PetriNetUnfolderBase]: 298/609 cut-off events. [2024-11-17 07:55:12,343 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-17 07:55:12,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 609 events. 298/609 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3123 event pairs, 109 based on Foata normal form. 18/483 useless extension candidates. Maximal degree in co-relation 816. Up to 420 conditions per place. [2024-11-17 07:55:12,348 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 45 selfloop transitions, 3 changer transitions 1/58 dead transitions. [2024-11-17 07:55:12,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 240 flow [2024-11-17 07:55:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-17 07:55:12,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-17 07:55:12,351 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 84 flow. Second operand 4 states and 95 transitions. [2024-11-17 07:55:12,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 240 flow [2024-11-17 07:55:12,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:12,353 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 106 flow [2024-11-17 07:55:12,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-11-17 07:55:12,354 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-11-17 07:55:12,355 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 106 flow [2024-11-17 07:55:12,355 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) [2024-11-17 07:55:12,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:12,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:12,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:55:12,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:12,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1045726930, now seen corresponding path program 1 times [2024-11-17 07:55:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:12,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712839202] [2024-11-17 07:55:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:12,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712839202] [2024-11-17 07:55:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712839202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:12,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:12,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:55:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103999835] [2024-11-17 07:55:12,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:12,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:12,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:12,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:12,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:12,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:12,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:12,549 INFO L124 PetriNetUnfolderBase]: 297/675 cut-off events. [2024-11-17 07:55:12,549 INFO L125 PetriNetUnfolderBase]: For 187/191 co-relation queries the response was YES. [2024-11-17 07:55:12,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 675 events. 297/675 cut-off events. For 187/191 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3683 event pairs, 56 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 1281. Up to 242 conditions per place. [2024-11-17 07:55:12,555 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 40 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-11-17 07:55:12,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 255 flow [2024-11-17 07:55:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-17 07:55:12,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6381578947368421 [2024-11-17 07:55:12,557 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 106 flow. Second operand 4 states and 97 transitions. [2024-11-17 07:55:12,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 255 flow [2024-11-17 07:55:12,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:12,559 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 142 flow [2024-11-17 07:55:12,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-11-17 07:55:12,560 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-11-17 07:55:12,560 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 142 flow [2024-11-17 07:55:12,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:12,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:12,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:12,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:55:12,561 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:12,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:12,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2142186879, now seen corresponding path program 1 times [2024-11-17 07:55:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:12,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976051285] [2024-11-17 07:55:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:12,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:12,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976051285] [2024-11-17 07:55:12,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976051285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:12,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:12,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:55:12,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945136234] [2024-11-17 07:55:12,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:12,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:12,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:12,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:12,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:12,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:12,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:12,731 INFO L124 PetriNetUnfolderBase]: 261/619 cut-off events. [2024-11-17 07:55:12,732 INFO L125 PetriNetUnfolderBase]: For 432/438 co-relation queries the response was YES. [2024-11-17 07:55:12,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 619 events. 261/619 cut-off events. For 432/438 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3216 event pairs, 156 based on Foata normal form. 28/576 useless extension candidates. Maximal degree in co-relation 1169. Up to 342 conditions per place. [2024-11-17 07:55:12,737 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 39 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-17 07:55:12,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 281 flow [2024-11-17 07:55:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-17 07:55:12,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-11-17 07:55:12,738 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 142 flow. Second operand 3 states and 75 transitions. [2024-11-17 07:55:12,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 281 flow [2024-11-17 07:55:12,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:12,740 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 160 flow [2024-11-17 07:55:12,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-11-17 07:55:12,741 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-17 07:55:12,741 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 160 flow [2024-11-17 07:55:12,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:12,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:12,742 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:12,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:55:12,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:12,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:12,743 INFO L85 PathProgramCache]: Analyzing trace with hash -289588052, now seen corresponding path program 1 times [2024-11-17 07:55:12,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:12,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468853774] [2024-11-17 07:55:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:12,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:12,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:12,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468853774] [2024-11-17 07:55:12,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468853774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:12,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316841385] [2024-11-17 07:55:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:12,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:12,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:12,815 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) [2024-11-17 07:55:12,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:55:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:12,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:55:12,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:12,913 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:12,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316841385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:12,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:12,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-17 07:55:12,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063794621] [2024-11-17 07:55:12,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:12,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:12,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:12,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:55:12,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:12,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:12,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:12,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:12,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:12,997 INFO L124 PetriNetUnfolderBase]: 231/581 cut-off events. [2024-11-17 07:55:12,997 INFO L125 PetriNetUnfolderBase]: For 786/798 co-relation queries the response was YES. [2024-11-17 07:55:12,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 581 events. 231/581 cut-off events. For 786/798 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3091 event pairs, 191 based on Foata normal form. 24/546 useless extension candidates. Maximal degree in co-relation 1157. Up to 405 conditions per place. [2024-11-17 07:55:13,002 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 24 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-11-17 07:55:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 192 flow [2024-11-17 07:55:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-17 07:55:13,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-11-17 07:55:13,006 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 160 flow. Second operand 3 states and 59 transitions. [2024-11-17 07:55:13,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 192 flow [2024-11-17 07:55:13,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:55:13,009 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 134 flow [2024-11-17 07:55:13,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-11-17 07:55:13,010 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-17 07:55:13,012 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 134 flow [2024-11-17 07:55:13,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:13,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:13,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:13,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:55:13,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:13,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:13,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1177792313, now seen corresponding path program 1 times [2024-11-17 07:55:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:13,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242000515] [2024-11-17 07:55:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:13,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:13,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242000515] [2024-11-17 07:55:13,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242000515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:13,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:13,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:55:13,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551584299] [2024-11-17 07:55:13,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:13,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:13,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:13,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:55:13,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:13,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:13,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:55:13,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:13,400 INFO L124 PetriNetUnfolderBase]: 445/962 cut-off events. [2024-11-17 07:55:13,400 INFO L125 PetriNetUnfolderBase]: For 727/783 co-relation queries the response was YES. [2024-11-17 07:55:13,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 962 events. 445/962 cut-off events. For 727/783 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5209 event pairs, 239 based on Foata normal form. 22/920 useless extension candidates. Maximal degree in co-relation 2327. Up to 522 conditions per place. [2024-11-17 07:55:13,405 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 53 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-17 07:55:13,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 386 flow [2024-11-17 07:55:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-17 07:55:13,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-11-17 07:55:13,407 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 134 flow. Second operand 4 states and 88 transitions. [2024-11-17 07:55:13,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 386 flow [2024-11-17 07:55:13,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:13,409 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 162 flow [2024-11-17 07:55:13,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-11-17 07:55:13,410 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-17 07:55:13,410 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 162 flow [2024-11-17 07:55:13,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:13,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:13,410 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:13,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:55:13,410 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:13,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash 878765168, now seen corresponding path program 1 times [2024-11-17 07:55:13,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:13,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139890579] [2024-11-17 07:55:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:13,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:13,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139890579] [2024-11-17 07:55:13,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139890579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:13,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330363515] [2024-11-17 07:55:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:13,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:13,460 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) [2024-11-17 07:55:13,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:55:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:13,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:13,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:13,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:13,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330363515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:13,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:13,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:55:13,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855295520] [2024-11-17 07:55:13,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:13,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:55:13,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:13,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:55:13,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:55:13,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:55:13,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:13,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:13,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:55:13,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:13,716 INFO L124 PetriNetUnfolderBase]: 425/956 cut-off events. [2024-11-17 07:55:13,716 INFO L125 PetriNetUnfolderBase]: For 903/955 co-relation queries the response was YES. [2024-11-17 07:55:13,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 956 events. 425/956 cut-off events. For 903/955 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5203 event pairs, 48 based on Foata normal form. 26/884 useless extension candidates. Maximal degree in co-relation 2505. Up to 294 conditions per place. [2024-11-17 07:55:13,721 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 72 selfloop transitions, 6 changer transitions 1/88 dead transitions. [2024-11-17 07:55:13,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 88 transitions, 528 flow [2024-11-17 07:55:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:55:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:55:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-11-17 07:55:13,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-11-17 07:55:13,723 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 162 flow. Second operand 6 states and 128 transitions. [2024-11-17 07:55:13,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 88 transitions, 528 flow [2024-11-17 07:55:13,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:13,726 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 167 flow [2024-11-17 07:55:13,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-11-17 07:55:13,727 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-11-17 07:55:13,727 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 167 flow [2024-11-17 07:55:13,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:13,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:13,727 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:55:13,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:55:13,928 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 [2024-11-17 07:55:13,928 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:13,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1471916622, now seen corresponding path program 1 times [2024-11-17 07:55:13,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459183171] [2024-11-17 07:55:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:14,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:14,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459183171] [2024-11-17 07:55:14,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459183171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:14,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275317671] [2024-11-17 07:55:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:14,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:14,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:14,008 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) [2024-11-17 07:55:14,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:55:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:14,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:14,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:14,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:14,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275317671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:14,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:14,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:55:14,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471032691] [2024-11-17 07:55:14,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:14,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:55:14,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:14,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:55:14,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:55:14,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:55:14,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 167 flow. Second operand has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:14,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:14,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:55:14,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:14,454 INFO L124 PetriNetUnfolderBase]: 889/1935 cut-off events. [2024-11-17 07:55:14,455 INFO L125 PetriNetUnfolderBase]: For 2569/2645 co-relation queries the response was YES. [2024-11-17 07:55:14,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5404 conditions, 1935 events. 889/1935 cut-off events. For 2569/2645 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11296 event pairs, 136 based on Foata normal form. 78/1868 useless extension candidates. Maximal degree in co-relation 5390. Up to 606 conditions per place. [2024-11-17 07:55:14,463 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 136 selfloop transitions, 12 changer transitions 0/157 dead transitions. [2024-11-17 07:55:14,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 157 transitions, 981 flow [2024-11-17 07:55:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:55:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:55:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 228 transitions. [2024-11-17 07:55:14,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-17 07:55:14,465 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 167 flow. Second operand 10 states and 228 transitions. [2024-11-17 07:55:14,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 157 transitions, 981 flow [2024-11-17 07:55:14,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 157 transitions, 954 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-17 07:55:14,468 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 236 flow [2024-11-17 07:55:14,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=236, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-11-17 07:55:14,468 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-11-17 07:55:14,468 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 236 flow [2024-11-17 07:55:14,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:14,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:14,469 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:14,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:55:14,672 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 [2024-11-17 07:55:14,673 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:14,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:14,673 INFO L85 PathProgramCache]: Analyzing trace with hash -263128523, now seen corresponding path program 1 times [2024-11-17 07:55:14,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:14,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443731612] [2024-11-17 07:55:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:14,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:14,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443731612] [2024-11-17 07:55:14,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443731612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:14,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634284493] [2024-11-17 07:55:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:14,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:14,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:14,742 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) [2024-11-17 07:55:14,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:55:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:14,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:55:14,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:14,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:14,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634284493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:14,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:14,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-17 07:55:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969727154] [2024-11-17 07:55:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:14,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:55:14,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:14,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:14,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:14,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:14,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:14,944 INFO L124 PetriNetUnfolderBase]: 749/1724 cut-off events. [2024-11-17 07:55:14,944 INFO L125 PetriNetUnfolderBase]: For 2716/2748 co-relation queries the response was YES. [2024-11-17 07:55:14,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4891 conditions, 1724 events. 749/1724 cut-off events. For 2716/2748 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10266 event pairs, 585 based on Foata normal form. 62/1686 useless extension candidates. Maximal degree in co-relation 4875. Up to 1240 conditions per place. [2024-11-17 07:55:14,951 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 35 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-11-17 07:55:14,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 304 flow [2024-11-17 07:55:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-17 07:55:14,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-11-17 07:55:14,952 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 236 flow. Second operand 3 states and 58 transitions. [2024-11-17 07:55:14,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 304 flow [2024-11-17 07:55:14,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 294 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:55:14,954 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 224 flow [2024-11-17 07:55:14,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-11-17 07:55:14,955 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-17 07:55:14,955 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 224 flow [2024-11-17 07:55:14,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:14,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:14,955 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:55:14,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:55:15,159 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 [2024-11-17 07:55:15,160 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:15,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1747767738, now seen corresponding path program 1 times [2024-11-17 07:55:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:15,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319866395] [2024-11-17 07:55:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319866395] [2024-11-17 07:55:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319866395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214519614] [2024-11-17 07:55:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:15,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:15,197 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) [2024-11-17 07:55:15,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:55:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:15,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 07:55:15,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:15,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:15,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214519614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:15,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:15,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-17 07:55:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491658332] [2024-11-17 07:55:15,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:15,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 07:55:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 07:55:15,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:55:15,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:15,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 224 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:15,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:15,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:15,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:15,662 INFO L124 PetriNetUnfolderBase]: 1462/3447 cut-off events. [2024-11-17 07:55:15,662 INFO L125 PetriNetUnfolderBase]: For 6005/6165 co-relation queries the response was YES. [2024-11-17 07:55:15,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9531 conditions, 3447 events. 1462/3447 cut-off events. For 6005/6165 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 23434 event pairs, 85 based on Foata normal form. 208/3483 useless extension candidates. Maximal degree in co-relation 9513. Up to 461 conditions per place. [2024-11-17 07:55:15,680 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 148 selfloop transitions, 14 changer transitions 2/174 dead transitions. [2024-11-17 07:55:15,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 174 transitions, 1173 flow [2024-11-17 07:55:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:55:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:55:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-11-17 07:55:15,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6637426900584795 [2024-11-17 07:55:15,682 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 224 flow. Second operand 9 states and 227 transitions. [2024-11-17 07:55:15,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 174 transitions, 1173 flow [2024-11-17 07:55:15,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 174 transitions, 1172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:15,687 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 362 flow [2024-11-17 07:55:15,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=362, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-11-17 07:55:15,688 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 34 predicate places. [2024-11-17 07:55:15,688 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 362 flow [2024-11-17 07:55:15,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:15,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:15,689 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:15,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 07:55:15,892 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 [2024-11-17 07:55:15,893 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:15,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash 616019795, now seen corresponding path program 1 times [2024-11-17 07:55:15,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:15,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799872599] [2024-11-17 07:55:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:15,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799872599] [2024-11-17 07:55:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799872599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126654139] [2024-11-17 07:55:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:15,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:15,944 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:15,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:55:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:15,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:15,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:16,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:16,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126654139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:16,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:16,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:55:16,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844939828] [2024-11-17 07:55:16,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:16,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:55:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:55:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:55:16,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-17 07:55:16,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 362 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:16,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:16,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-17 07:55:16,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:16,553 INFO L124 PetriNetUnfolderBase]: 1877/3889 cut-off events. [2024-11-17 07:55:16,554 INFO L125 PetriNetUnfolderBase]: For 8975/9037 co-relation queries the response was YES. [2024-11-17 07:55:16,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12156 conditions, 3889 events. 1877/3889 cut-off events. For 8975/9037 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 24976 event pairs, 253 based on Foata normal form. 111/3793 useless extension candidates. Maximal degree in co-relation 12131. Up to 897 conditions per place. [2024-11-17 07:55:16,572 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 146 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2024-11-17 07:55:16,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 160 transitions, 1460 flow [2024-11-17 07:55:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:55:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:55:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-17 07:55:16,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-11-17 07:55:16,573 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 362 flow. Second operand 6 states and 116 transitions. [2024-11-17 07:55:16,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 160 transitions, 1460 flow [2024-11-17 07:55:16,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 160 transitions, 1403 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:16,581 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 358 flow [2024-11-17 07:55:16,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2024-11-17 07:55:16,581 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-11-17 07:55:16,582 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 358 flow [2024-11-17 07:55:16,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:16,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:16,582 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:16,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:55:16,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:16,783 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:16,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1291839203, now seen corresponding path program 1 times [2024-11-17 07:55:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923527042] [2024-11-17 07:55:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:16,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:16,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923527042] [2024-11-17 07:55:16,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923527042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:16,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837454414] [2024-11-17 07:55:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:16,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:16,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:16,826 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:16,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:55:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:16,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:16,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:16,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837454414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:16,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:16,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:55:16,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921637298] [2024-11-17 07:55:16,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:16,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:55:16,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:55:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:55:16,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:55:16,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 358 flow. Second operand has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:16,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:16,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:55:16,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:17,753 INFO L124 PetriNetUnfolderBase]: 2870/6303 cut-off events. [2024-11-17 07:55:17,753 INFO L125 PetriNetUnfolderBase]: For 15758/15874 co-relation queries the response was YES. [2024-11-17 07:55:17,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20093 conditions, 6303 events. 2870/6303 cut-off events. For 15758/15874 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 44648 event pairs, 629 based on Foata normal form. 243/6388 useless extension candidates. Maximal degree in co-relation 20068. Up to 1842 conditions per place. [2024-11-17 07:55:17,780 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 243 selfloop transitions, 13 changer transitions 6/270 dead transitions. [2024-11-17 07:55:17,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 270 transitions, 2470 flow [2024-11-17 07:55:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:55:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:55:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-11-17 07:55:17,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-17 07:55:17,782 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 358 flow. Second operand 10 states and 209 transitions. [2024-11-17 07:55:17,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 270 transitions, 2470 flow [2024-11-17 07:55:17,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 270 transitions, 2440 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-17 07:55:17,794 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 421 flow [2024-11-17 07:55:17,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=421, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-11-17 07:55:17,795 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-11-17 07:55:17,795 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 421 flow [2024-11-17 07:55:17,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:17,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:17,795 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-17 07:55:17,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:55:17,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:17,998 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:17,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1990130147, now seen corresponding path program 2 times [2024-11-17 07:55:17,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:17,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687671800] [2024-11-17 07:55:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:17,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:18,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687671800] [2024-11-17 07:55:18,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687671800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106650473] [2024-11-17 07:55:18,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:55:18,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:18,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:18,242 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:18,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:55:18,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:55:18,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:18,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:55:18,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-17 07:55:18,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-17 07:55:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106650473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:18,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-17 07:55:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804303213] [2024-11-17 07:55:18,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:18,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:55:18,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:55:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:55:18,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-17 07:55:18,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 421 flow. Second operand has 15 states, 15 states have (on average 11.266666666666667) internal successors, (169), 15 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:18,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:18,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-17 07:55:18,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:19,697 INFO L124 PetriNetUnfolderBase]: 5060/9497 cut-off events. [2024-11-17 07:55:19,697 INFO L125 PetriNetUnfolderBase]: For 25901/25999 co-relation queries the response was YES. [2024-11-17 07:55:19,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31018 conditions, 9497 events. 5060/9497 cut-off events. For 25901/25999 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 64246 event pairs, 411 based on Foata normal form. 310/9251 useless extension candidates. Maximal degree in co-relation 30991. Up to 2104 conditions per place. [2024-11-17 07:55:19,737 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 308 selfloop transitions, 18 changer transitions 3/335 dead transitions. [2024-11-17 07:55:19,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 335 transitions, 2733 flow [2024-11-17 07:55:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:55:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:55:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 295 transitions. [2024-11-17 07:55:19,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-11-17 07:55:19,739 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 421 flow. Second operand 15 states and 295 transitions. [2024-11-17 07:55:19,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 335 transitions, 2733 flow [2024-11-17 07:55:19,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 335 transitions, 2598 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-17 07:55:19,758 INFO L231 Difference]: Finished difference. Result has 90 places, 68 transitions, 461 flow [2024-11-17 07:55:19,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=461, PETRI_PLACES=90, PETRI_TRANSITIONS=68} [2024-11-17 07:55:19,759 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2024-11-17 07:55:19,759 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 68 transitions, 461 flow [2024-11-17 07:55:19,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.266666666666667) internal successors, (169), 15 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:19,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:19,759 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2024-11-17 07:55:19,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 07:55:19,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-17 07:55:19,960 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:19,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2119290582, now seen corresponding path program 2 times [2024-11-17 07:55:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:19,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295412107] [2024-11-17 07:55:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:20,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295412107] [2024-11-17 07:55:20,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295412107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255745271] [2024-11-17 07:55:20,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:55:20,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:20,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:20,119 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:20,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:55:20,158 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:55:20,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:20,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 07:55:20,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:20,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255745271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:20,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:20,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-17 07:55:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704660417] [2024-11-17 07:55:20,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:20,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:55:20,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:55:20,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:55:20,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:20,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 68 transitions, 461 flow. Second operand has 17 states, 17 states have (on average 15.823529411764707) internal successors, (269), 17 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:20,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:20,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:20,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:22,073 INFO L124 PetriNetUnfolderBase]: 7900/17490 cut-off events. [2024-11-17 07:55:22,073 INFO L125 PetriNetUnfolderBase]: For 76123/76667 co-relation queries the response was YES. [2024-11-17 07:55:22,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57762 conditions, 17490 events. 7900/17490 cut-off events. For 76123/76667 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 142937 event pairs, 202 based on Foata normal form. 731/18213 useless extension candidates. Maximal degree in co-relation 57736. Up to 3123 conditions per place. [2024-11-17 07:55:22,150 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 414 selfloop transitions, 58 changer transitions 9/490 dead transitions. [2024-11-17 07:55:22,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 490 transitions, 4001 flow [2024-11-17 07:55:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 07:55:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 07:55:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 451 transitions. [2024-11-17 07:55:22,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6981424148606811 [2024-11-17 07:55:22,152 INFO L175 Difference]: Start difference. First operand has 90 places, 68 transitions, 461 flow. Second operand 17 states and 451 transitions. [2024-11-17 07:55:22,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 490 transitions, 4001 flow [2024-11-17 07:55:22,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 490 transitions, 3732 flow, removed 68 selfloop flow, removed 11 redundant places. [2024-11-17 07:55:22,196 INFO L231 Difference]: Finished difference. Result has 109 places, 110 transitions, 1013 flow [2024-11-17 07:55:22,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1013, PETRI_PLACES=109, PETRI_TRANSITIONS=110} [2024-11-17 07:55:22,196 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 72 predicate places. [2024-11-17 07:55:22,196 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 110 transitions, 1013 flow [2024-11-17 07:55:22,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.823529411764707) internal successors, (269), 17 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:22,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:22,197 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:22,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 07:55:22,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-17 07:55:22,400 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:22,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:22,401 INFO L85 PathProgramCache]: Analyzing trace with hash -683998053, now seen corresponding path program 2 times [2024-11-17 07:55:22,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:22,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275561688] [2024-11-17 07:55:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:22,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:55:22,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275561688] [2024-11-17 07:55:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275561688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808311352] [2024-11-17 07:55:22,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:55:22,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:22,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:22,557 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:22,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:55:22,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:55:22,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:22,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:55:22,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-17 07:55:22,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-17 07:55:22,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808311352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:22,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:22,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-17 07:55:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982335659] [2024-11-17 07:55:22,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:22,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:55:22,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:55:22,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:55:22,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-17 07:55:22,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 1013 flow. Second operand has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 15 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:22,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:22,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-17 07:55:22,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:26,109 INFO L124 PetriNetUnfolderBase]: 11878/24000 cut-off events. [2024-11-17 07:55:26,109 INFO L125 PetriNetUnfolderBase]: For 93199/94101 co-relation queries the response was YES. [2024-11-17 07:55:26,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80331 conditions, 24000 events. 11878/24000 cut-off events. For 93199/94101 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 194091 event pairs, 1058 based on Foata normal form. 1333/25319 useless extension candidates. Maximal degree in co-relation 80291. Up to 3970 conditions per place. [2024-11-17 07:55:26,272 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 643 selfloop transitions, 22 changer transitions 38/710 dead transitions. [2024-11-17 07:55:26,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 710 transitions, 8840 flow [2024-11-17 07:55:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:55:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:55:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 289 transitions. [2024-11-17 07:55:26,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5070175438596491 [2024-11-17 07:55:26,277 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 1013 flow. Second operand 15 states and 289 transitions. [2024-11-17 07:55:26,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 710 transitions, 8840 flow [2024-11-17 07:55:26,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 710 transitions, 7956 flow, removed 387 selfloop flow, removed 8 redundant places. [2024-11-17 07:55:26,430 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 984 flow [2024-11-17 07:55:26,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=984, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2024-11-17 07:55:26,432 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 78 predicate places. [2024-11-17 07:55:26,432 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 984 flow [2024-11-17 07:55:26,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 15 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:26,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:26,433 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-17 07:55:26,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 07:55:26,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 07:55:26,636 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:26,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1211895054, now seen corresponding path program 3 times [2024-11-17 07:55:26,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:26,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568494591] [2024-11-17 07:55:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:26,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:27,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:27,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568494591] [2024-11-17 07:55:27,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568494591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:27,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804535156] [2024-11-17 07:55:27,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:55:27,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:27,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:27,059 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:27,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:55:27,125 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-17 07:55:27,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:27,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 07:55:27,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:27,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:27,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804535156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:27,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:27,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-17 07:55:27,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848392046] [2024-11-17 07:55:27,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:27,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-17 07:55:27,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:27,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-17 07:55:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-17 07:55:27,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:27,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 984 flow. Second operand has 33 states, 33 states have (on average 15.909090909090908) internal successors, (525), 33 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:27,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:27,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:27,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:33,908 INFO L124 PetriNetUnfolderBase]: 19082/44953 cut-off events. [2024-11-17 07:55:33,909 INFO L125 PetriNetUnfolderBase]: For 393103/393465 co-relation queries the response was YES. [2024-11-17 07:55:34,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147340 conditions, 44953 events. 19082/44953 cut-off events. For 393103/393465 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 404147 event pairs, 263 based on Foata normal form. 1378/46308 useless extension candidates. Maximal degree in co-relation 147305. Up to 6515 conditions per place. [2024-11-17 07:55:34,272 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 885 selfloop transitions, 214 changer transitions 0/1107 dead transitions. [2024-11-17 07:55:34,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 1107 transitions, 10333 flow [2024-11-17 07:55:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-17 07:55:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-17 07:55:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 837 transitions. [2024-11-17 07:55:34,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6674641148325359 [2024-11-17 07:55:34,274 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 984 flow. Second operand 33 states and 837 transitions. [2024-11-17 07:55:34,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 1107 transitions, 10333 flow [2024-11-17 07:55:34,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 1107 transitions, 8682 flow, removed 217 selfloop flow, removed 12 redundant places. [2024-11-17 07:55:34,565 INFO L231 Difference]: Finished difference. Result has 163 places, 268 transitions, 3071 flow [2024-11-17 07:55:34,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3071, PETRI_PLACES=163, PETRI_TRANSITIONS=268} [2024-11-17 07:55:34,566 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 126 predicate places. [2024-11-17 07:55:34,566 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 268 transitions, 3071 flow [2024-11-17 07:55:34,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 15.909090909090908) internal successors, (525), 33 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:34,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:34,567 INFO L204 CegarLoopForPetriNet]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1] [2024-11-17 07:55:34,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 07:55:34,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 07:55:34,768 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:55:34,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:34,768 INFO L85 PathProgramCache]: Analyzing trace with hash -807508350, now seen corresponding path program 4 times [2024-11-17 07:55:34,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:34,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616682186] [2024-11-17 07:55:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:34,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:35,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616682186] [2024-11-17 07:55:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616682186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726464636] [2024-11-17 07:55:35,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 07:55:35,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:35,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:35,830 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:35,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 07:55:35,902 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 07:55:35,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:35,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-17 07:55:35,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:36,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726464636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:37,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:37,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-17 07:55:37,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722269447] [2024-11-17 07:55:37,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:37,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-17 07:55:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-17 07:55:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-17 07:55:37,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-17 07:55:37,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 268 transitions, 3071 flow. Second operand has 65 states, 65 states have (on average 15.953846153846154) internal successors, (1037), 65 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:37,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:37,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-17 07:55:37,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand