./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.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-alt.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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:55:06,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:55:06,072 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:55:06,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:55:06,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:55:06,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:55:06,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:55:06,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:55:06,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:55:06,102 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:55:06,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:55:06,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:55:06,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:55:06,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:55:06,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:55:06,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:55:06,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:55:06,108 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:55:06,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:55:06,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:55:06,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:55:06,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:55:06,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:55:06,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:55:06,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:55:06,113 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:55:06,114 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:55:06,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:55:06,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:55:06,114 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:55:06,114 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:55:06,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:55:06,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:55:06,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:55:06,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:55:06,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:55:06,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:55:06,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:55:06,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:55:06,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:55:06,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:55:06,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:55:06,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:55:06,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:55:06,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-17 07:55:06,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:55:06,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:55:06,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:55:06,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:55:06,427 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:55:06,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-17 07:55:07,922 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:55:08,152 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:55:08,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-17 07:55:08,160 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6d7581e/2f811b542dfd4f4a9d0dd2d91ca0fd40/FLAGf5f9bd44b [2024-11-17 07:55:08,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6d7581e/2f811b542dfd4f4a9d0dd2d91ca0fd40 [2024-11-17 07:55:08,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:55:08,178 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:55:08,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:55:08,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:55:08,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:55:08,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7115c8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08, skipping insertion in model container [2024-11-17 07:55:08,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:55:08,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:55:08,407 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:55:08,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:55:08,442 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:55:08,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08 WrapperNode [2024-11-17 07:55:08,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:55:08,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:55:08,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:55:08,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:55:08,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,480 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 73 [2024-11-17 07:55:08,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:55:08,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:55:08,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:55:08,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:55:08,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,506 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 07:55:08,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,510 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:55:08,525 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:55:08,525 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:55:08,525 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:55:08,526 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (1/1) ... [2024-11-17 07:55:08,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:55:08,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:08,554 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 07:55:08,557 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 07:55:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:55:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:55:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:55:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:55:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:55:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:55:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:55:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:55:08,601 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 07:55:08,682 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:55:08,683 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:55:08,893 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:55:08,894 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:55:09,014 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:55:09,014 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:55:09,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:55:09 BoogieIcfgContainer [2024-11-17 07:55:09,015 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:55:09,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:55:09,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:55:09,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:55:09,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:55:08" (1/3) ... [2024-11-17 07:55:09,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c65f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:55:09, skipping insertion in model container [2024-11-17 07:55:09,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:08" (2/3) ... [2024-11-17 07:55:09,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c65f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:55:09, skipping insertion in model container [2024-11-17 07:55:09,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:55:09" (3/3) ... [2024-11-17 07:55:09,025 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-17 07:55:09,044 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:55:09,044 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-17 07:55:09,045 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:55:09,113 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:55:09,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 96 flow [2024-11-17 07:55:09,194 INFO L124 PetriNetUnfolderBase]: 4/39 cut-off events. [2024-11-17 07:55:09,195 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:55:09,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 39 events. 4/39 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-17 07:55:09,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 41 transitions, 96 flow [2024-11-17 07:55:09,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 38 transitions, 88 flow [2024-11-17 07:55:09,220 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:55:09,230 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;@68856143, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:55:09,231 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-17 07:55:09,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:55:09,243 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-11-17 07:55:09,243 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:55:09,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:09,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:55:09,245 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:09,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1028974730, now seen corresponding path program 1 times [2024-11-17 07:55:09,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450294197] [2024-11-17 07:55:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:09,543 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 07:55:09,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:09,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450294197] [2024-11-17 07:55:09,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450294197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:09,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:09,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:55:09,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946158397] [2024-11-17 07:55:09,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:09,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:09,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:09,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:09,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 07:55:09,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:09,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:09,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:09,778 INFO L124 PetriNetUnfolderBase]: 194/442 cut-off events. [2024-11-17 07:55:09,779 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-17 07:55:09,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 442 events. 194/442 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2280 event pairs, 77 based on Foata normal form. 50/388 useless extension candidates. Maximal degree in co-relation 744. Up to 290 conditions per place. [2024-11-17 07:55:09,785 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 29 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-17 07:55:09,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 173 flow [2024-11-17 07:55:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-17 07:55:09,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6991869918699187 [2024-11-17 07:55:09,799 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 88 flow. Second operand 3 states and 86 transitions. [2024-11-17 07:55:09,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 173 flow [2024-11-17 07:55:09,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:55:09,806 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 92 flow [2024-11-17 07:55:09,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-17 07:55:09,813 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-17 07:55:09,814 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 92 flow [2024-11-17 07:55:09,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 07:55:09,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:09,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:09,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:55:09,815 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:09,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1002227462, now seen corresponding path program 1 times [2024-11-17 07:55:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:09,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005624822] [2024-11-17 07:55:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:09,903 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 07:55:09,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:09,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005624822] [2024-11-17 07:55:09,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005624822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:09,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:09,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:55:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343585959] [2024-11-17 07:55:09,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:09,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:09,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:09,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:09,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:09,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 07:55:09,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 07:55:09,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:09,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 07:55:09,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:10,129 INFO L124 PetriNetUnfolderBase]: 298/623 cut-off events. [2024-11-17 07:55:10,129 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-17 07:55:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 623 events. 298/623 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3325 event pairs, 127 based on Foata normal form. 18/493 useless extension candidates. Maximal degree in co-relation 564. Up to 422 conditions per place. [2024-11-17 07:55:10,138 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 46 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-17 07:55:10,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 248 flow [2024-11-17 07:55:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-17 07:55:10,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-17 07:55:10,143 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 92 flow. Second operand 4 states and 108 transitions. [2024-11-17 07:55:10,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 248 flow [2024-11-17 07:55:10,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:10,146 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 119 flow [2024-11-17 07:55:10,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-17 07:55:10,148 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-11-17 07:55:10,148 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 119 flow [2024-11-17 07:55:10,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 07:55:10,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:10,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:10,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:55:10,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:10,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:10,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1323249341, now seen corresponding path program 1 times [2024-11-17 07:55:10,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:10,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064741493] [2024-11-17 07:55:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:10,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:10,259 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 07:55:10,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:10,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064741493] [2024-11-17 07:55:10,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064741493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:10,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:10,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:55:10,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116911546] [2024-11-17 07:55:10,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:10,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:10,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:10,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:10,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:10,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 07:55:10,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:10,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:10,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:10,386 INFO L124 PetriNetUnfolderBase]: 221/539 cut-off events. [2024-11-17 07:55:10,386 INFO L125 PetriNetUnfolderBase]: For 166/172 co-relation queries the response was YES. [2024-11-17 07:55:10,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 539 events. 221/539 cut-off events. For 166/172 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2969 event pairs, 133 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 371. Up to 286 conditions per place. [2024-11-17 07:55:10,394 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 38 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-11-17 07:55:10,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 252 flow [2024-11-17 07:55:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-17 07:55:10,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2024-11-17 07:55:10,396 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 119 flow. Second operand 3 states and 85 transitions. [2024-11-17 07:55:10,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 252 flow [2024-11-17 07:55:10,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:10,398 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 140 flow [2024-11-17 07:55:10,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-17 07:55:10,403 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-11-17 07:55:10,404 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 140 flow [2024-11-17 07:55:10,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 07:55:10,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:10,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:10,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:55:10,405 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:10,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:10,406 INFO L85 PathProgramCache]: Analyzing trace with hash 496841598, now seen corresponding path program 1 times [2024-11-17 07:55:10,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:10,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304629096] [2024-11-17 07:55:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:10,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:10,536 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 07:55:10,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304629096] [2024-11-17 07:55:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304629096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:10,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:10,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:55:10,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499830963] [2024-11-17 07:55:10,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:10,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:10,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:10,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:10,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:10,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:10,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:10,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:10,666 INFO L124 PetriNetUnfolderBase]: 272/648 cut-off events. [2024-11-17 07:55:10,666 INFO L125 PetriNetUnfolderBase]: For 499/501 co-relation queries the response was YES. [2024-11-17 07:55:10,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 648 events. 272/648 cut-off events. For 499/501 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3467 event pairs, 56 based on Foata normal form. 25/621 useless extension candidates. Maximal degree in co-relation 720. Up to 237 conditions per place. [2024-11-17 07:55:10,671 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 44 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-17 07:55:10,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 302 flow [2024-11-17 07:55:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-17 07:55:10,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-11-17 07:55:10,674 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 140 flow. Second operand 4 states and 112 transitions. [2024-11-17 07:55:10,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 302 flow [2024-11-17 07:55:10,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:55:10,679 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 168 flow [2024-11-17 07:55:10,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-17 07:55:10,681 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-11-17 07:55:10,681 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 168 flow [2024-11-17 07:55:10,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:10,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:10,682 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:10,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:55:10,682 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:10,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash 236201551, now seen corresponding path program 1 times [2024-11-17 07:55:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:10,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658491205] [2024-11-17 07:55:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:10,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:10,761 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 07:55:10,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:10,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658491205] [2024-11-17 07:55:10,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658491205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:10,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758457017] [2024-11-17 07:55:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:10,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:10,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:10,767 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 07:55:10,768 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 07:55:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:10,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:55:10,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:10,880 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 07:55:10,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758457017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:10,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:10,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-17 07:55:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975852858] [2024-11-17 07:55:10,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:10,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:10,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:55:10,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:10,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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 07:55:10,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:10,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:10,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:10,960 INFO L124 PetriNetUnfolderBase]: 242/617 cut-off events. [2024-11-17 07:55:10,960 INFO L125 PetriNetUnfolderBase]: For 672/684 co-relation queries the response was YES. [2024-11-17 07:55:10,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 617 events. 242/617 cut-off events. For 672/684 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3392 event pairs, 202 based on Foata normal form. 24/576 useless extension candidates. Maximal degree in co-relation 673. Up to 430 conditions per place. [2024-11-17 07:55:10,966 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 26 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-11-17 07:55:10,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 204 flow [2024-11-17 07:55:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-17 07:55:10,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-11-17 07:55:10,968 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 168 flow. Second operand 3 states and 69 transitions. [2024-11-17 07:55:10,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 204 flow [2024-11-17 07:55:10,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:55:10,971 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 146 flow [2024-11-17 07:55:10,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-17 07:55:10,973 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-17 07:55:10,974 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 146 flow [2024-11-17 07:55:10,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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 07:55:10,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:10,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:10,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:55:11,176 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 07:55:11,177 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:11,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash 203348907, now seen corresponding path program 1 times [2024-11-17 07:55:11,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:11,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923285558] [2024-11-17 07:55:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:11,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:11,218 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 07:55:11,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:11,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923285558] [2024-11-17 07:55:11,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923285558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:11,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:11,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:55:11,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793431854] [2024-11-17 07:55:11,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:11,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:11,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:11,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 07:55:11,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 07:55:11,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:11,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 07:55:11,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:11,415 INFO L124 PetriNetUnfolderBase]: 456/999 cut-off events. [2024-11-17 07:55:11,416 INFO L125 PetriNetUnfolderBase]: For 720/770 co-relation queries the response was YES. [2024-11-17 07:55:11,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 999 events. 456/999 cut-off events. For 720/770 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5556 event pairs, 246 based on Foata normal form. 22/953 useless extension candidates. Maximal degree in co-relation 2387. Up to 540 conditions per place. [2024-11-17 07:55:11,423 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 56 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-11-17 07:55:11,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 408 flow [2024-11-17 07:55:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-17 07:55:11,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-11-17 07:55:11,426 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 146 flow. Second operand 4 states and 101 transitions. [2024-11-17 07:55:11,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 408 flow [2024-11-17 07:55:11,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:11,429 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 174 flow [2024-11-17 07:55:11,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-17 07:55:11,430 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-17 07:55:11,430 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 174 flow [2024-11-17 07:55:11,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 07:55:11,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:11,431 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:11,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:55:11,431 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:11,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:11,432 INFO L85 PathProgramCache]: Analyzing trace with hash -643566189, now seen corresponding path program 1 times [2024-11-17 07:55:11,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:11,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079207021] [2024-11-17 07:55:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:11,486 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 07:55:11,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:11,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079207021] [2024-11-17 07:55:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079207021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:11,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853564290] [2024-11-17 07:55:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:11,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:11,489 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 07:55:11,490 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 07:55:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:11,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:11,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:11,586 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 07:55:11,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:11,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853564290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:11,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:11,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:55:11,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025593529] [2024-11-17 07:55:11,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:11,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:55:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:55:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:55:11,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 07:55:11,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 07:55:11,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:11,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 07:55:11,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:11,827 INFO L124 PetriNetUnfolderBase]: 436/992 cut-off events. [2024-11-17 07:55:11,827 INFO L125 PetriNetUnfolderBase]: For 928/980 co-relation queries the response was YES. [2024-11-17 07:55:11,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2586 conditions, 992 events. 436/992 cut-off events. For 928/980 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5466 event pairs, 52 based on Foata normal form. 26/924 useless extension candidates. Maximal degree in co-relation 2572. Up to 294 conditions per place. [2024-11-17 07:55:11,834 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 74 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2024-11-17 07:55:11,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 93 transitions, 540 flow [2024-11-17 07:55:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:55:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:55:11,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-11-17 07:55:11,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2024-11-17 07:55:11,836 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 174 flow. Second operand 6 states and 148 transitions. [2024-11-17 07:55:11,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 93 transitions, 540 flow [2024-11-17 07:55:11,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 93 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:11,841 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 181 flow [2024-11-17 07:55:11,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2024-11-17 07:55:11,843 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-17 07:55:11,843 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 181 flow [2024-11-17 07:55:11,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 07:55:11,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:11,844 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:55:11,861 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 07:55:12,045 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 07:55:12,045 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:12,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1524284845, now seen corresponding path program 1 times [2024-11-17 07:55:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:12,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516153531] [2024-11-17 07:55:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:12,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:12,126 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 07:55:12,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:12,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516153531] [2024-11-17 07:55:12,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516153531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:12,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873446754] [2024-11-17 07:55:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:12,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:12,130 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 07:55:12,131 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 07:55:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:12,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:12,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:12,257 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 07:55:12,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:12,325 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 07:55:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873446754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:12,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:12,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:55:12,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546464960] [2024-11-17 07:55:12,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:12,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:55:12,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:12,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:55:12,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:55:12,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 07:55:12,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 181 flow. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 0 states have call successors, (0), 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 07:55:12,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:12,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 07:55:12,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:12,825 INFO L124 PetriNetUnfolderBase]: 900/2012 cut-off events. [2024-11-17 07:55:12,826 INFO L125 PetriNetUnfolderBase]: For 2574/2650 co-relation queries the response was YES. [2024-11-17 07:55:12,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5507 conditions, 2012 events. 900/2012 cut-off events. For 2574/2650 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11819 event pairs, 130 based on Foata normal form. 78/1971 useless extension candidates. Maximal degree in co-relation 5493. Up to 631 conditions per place. [2024-11-17 07:55:12,840 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 137 selfloop transitions, 13 changer transitions 0/162 dead transitions. [2024-11-17 07:55:12,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 162 transitions, 991 flow [2024-11-17 07:55:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:55:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:55:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-11-17 07:55:12,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-17 07:55:12,842 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 181 flow. Second operand 10 states and 260 transitions. [2024-11-17 07:55:12,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 162 transitions, 991 flow [2024-11-17 07:55:12,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 162 transitions, 961 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-17 07:55:12,848 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 249 flow [2024-11-17 07:55:12,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-17 07:55:12,849 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-11-17 07:55:12,850 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 249 flow [2024-11-17 07:55:12,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 0 states have call successors, (0), 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 07:55:12,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:12,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:12,873 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 07:55:13,054 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 07:55:13,055 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:13,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:13,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1533244685, now seen corresponding path program 1 times [2024-11-17 07:55:13,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674384435] [2024-11-17 07:55:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:13,103 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 07:55:13,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674384435] [2024-11-17 07:55:13,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674384435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:13,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:13,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:55:13,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090490075] [2024-11-17 07:55:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:13,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:13,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 07:55:13,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 07:55:13,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:13,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 07:55:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:13,281 INFO L124 PetriNetUnfolderBase]: 860/1970 cut-off events. [2024-11-17 07:55:13,281 INFO L125 PetriNetUnfolderBase]: For 3072/3120 co-relation queries the response was YES. [2024-11-17 07:55:13,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 1970 events. 860/1970 cut-off events. For 3072/3120 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12014 event pairs, 684 based on Foata normal form. 3/1854 useless extension candidates. Maximal degree in co-relation 5547. Up to 1430 conditions per place. [2024-11-17 07:55:13,318 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 39 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2024-11-17 07:55:13,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 327 flow [2024-11-17 07:55:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-17 07:55:13,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2024-11-17 07:55:13,319 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 249 flow. Second operand 3 states and 64 transitions. [2024-11-17 07:55:13,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 327 flow [2024-11-17 07:55:13,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 316 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:55:13,325 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 238 flow [2024-11-17 07:55:13,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-11-17 07:55:13,326 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-11-17 07:55:13,326 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 238 flow [2024-11-17 07:55:13,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 07:55:13,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:13,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:13,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:55:13,327 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:13,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash -868820374, now seen corresponding path program 1 times [2024-11-17 07:55:13,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:13,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059806241] [2024-11-17 07:55:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:13,363 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 07:55:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059806241] [2024-11-17 07:55:13,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059806241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:13,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:13,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:55:13,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012028849] [2024-11-17 07:55:13,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:13,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:13,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:13,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:13,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:13,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 07:55:13,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 07:55:13,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:13,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 07:55:13,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:13,544 INFO L124 PetriNetUnfolderBase]: 860/1967 cut-off events. [2024-11-17 07:55:13,545 INFO L125 PetriNetUnfolderBase]: For 2714/2762 co-relation queries the response was YES. [2024-11-17 07:55:13,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 1967 events. 860/1967 cut-off events. For 2714/2762 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11995 event pairs, 684 based on Foata normal form. 3/1851 useless extension candidates. Maximal degree in co-relation 5433. Up to 1427 conditions per place. [2024-11-17 07:55:13,561 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 36 selfloop transitions, 1 changer transitions 3/50 dead transitions. [2024-11-17 07:55:13,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 314 flow [2024-11-17 07:55:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-17 07:55:13,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-11-17 07:55:13,563 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 238 flow. Second operand 3 states and 63 transitions. [2024-11-17 07:55:13,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 314 flow [2024-11-17 07:55:13,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:13,568 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 228 flow [2024-11-17 07:55:13,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-11-17 07:55:13,569 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-11-17 07:55:13,569 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 228 flow [2024-11-17 07:55:13,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 07:55:13,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:13,570 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:13,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:55:13,570 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:13,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:13,571 INFO L85 PathProgramCache]: Analyzing trace with hash -562719419, now seen corresponding path program 1 times [2024-11-17 07:55:13,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:13,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541004791] [2024-11-17 07:55:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:13,636 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 07:55:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:13,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541004791] [2024-11-17 07:55:13,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541004791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:13,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936565129] [2024-11-17 07:55:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:13,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:13,639 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 07:55:13,641 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 07:55:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:13,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:55:13,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:13,722 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 07:55:13,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936565129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:13,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:13,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-17 07:55:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799912336] [2024-11-17 07:55:13,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:13,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:13,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:55:13,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:13,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 07:55:13,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:13,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:13,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:13,868 INFO L124 PetriNetUnfolderBase]: 749/1730 cut-off events. [2024-11-17 07:55:13,868 INFO L125 PetriNetUnfolderBase]: For 2409/2441 co-relation queries the response was YES. [2024-11-17 07:55:13,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 1730 events. 749/1730 cut-off events. For 2409/2441 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10287 event pairs, 585 based on Foata normal form. 62/1696 useless extension candidates. Maximal degree in co-relation 4764. Up to 1240 conditions per place. [2024-11-17 07:55:13,882 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 35 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-11-17 07:55:13,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 296 flow [2024-11-17 07:55:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-17 07:55:13,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2024-11-17 07:55:13,884 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 228 flow. Second operand 3 states and 67 transitions. [2024-11-17 07:55:13,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 296 flow [2024-11-17 07:55:13,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 46 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:13,889 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 225 flow [2024-11-17 07:55:13,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=225, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-11-17 07:55:13,890 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-11-17 07:55:13,890 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 225 flow [2024-11-17 07:55:13,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 07:55:13,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:13,891 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:55:13,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:55:14,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:14,095 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:14,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash -719131031, now seen corresponding path program 1 times [2024-11-17 07:55:14,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:14,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859972307] [2024-11-17 07:55:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:14,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:14,150 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 07:55:14,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:14,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859972307] [2024-11-17 07:55:14,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859972307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:14,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027180639] [2024-11-17 07:55:14,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:14,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:14,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:14,153 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 07:55:14,155 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 07:55:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:14,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 07:55:14,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:14,232 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 07:55:14,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:14,278 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 07:55:14,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027180639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:14,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:14,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-17 07:55:14,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837032641] [2024-11-17 07:55:14,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:14,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 07:55:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 07:55:14,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:55:14,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:14,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 225 flow. Second operand has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 0 states have call successors, (0), 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 07:55:14,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:14,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:14,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:14,750 INFO L124 PetriNetUnfolderBase]: 1462/3451 cut-off events. [2024-11-17 07:55:14,750 INFO L125 PetriNetUnfolderBase]: For 5957/6117 co-relation queries the response was YES. [2024-11-17 07:55:14,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9510 conditions, 3451 events. 1462/3451 cut-off events. For 5957/6117 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 23554 event pairs, 85 based on Foata normal form. 208/3489 useless extension candidates. Maximal degree in co-relation 9490. Up to 461 conditions per place. [2024-11-17 07:55:14,778 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 148 selfloop transitions, 14 changer transitions 2/174 dead transitions. [2024-11-17 07:55:14,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 174 transitions, 1168 flow [2024-11-17 07:55:14,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:55:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:55:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-11-17 07:55:14,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6883468834688347 [2024-11-17 07:55:14,780 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 225 flow. Second operand 9 states and 254 transitions. [2024-11-17 07:55:14,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 174 transitions, 1168 flow [2024-11-17 07:55:14,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 174 transitions, 1167 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:14,792 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 363 flow [2024-11-17 07:55:14,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=363, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-11-17 07:55:14,794 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-11-17 07:55:14,795 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 363 flow [2024-11-17 07:55:14,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 0 states have call successors, (0), 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 07:55:14,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:14,795 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 07:55:14,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:55:14,995 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,SelfDestructingSolverStorable11 [2024-11-17 07:55:14,996 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:14,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:14,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1340510289, now seen corresponding path program 1 times [2024-11-17 07:55:14,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:14,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460836000] [2024-11-17 07:55:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:14,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:15,075 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 07:55:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:15,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460836000] [2024-11-17 07:55:15,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460836000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:15,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964328294] [2024-11-17 07:55:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:15,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:15,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:15,078 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 07:55:15,080 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 07:55:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:15,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:15,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:15,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:15,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964328294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:15,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:55:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842074934] [2024-11-17 07:55:15,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:15,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:55:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:55:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:55:15,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 07:55:15,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 363 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 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 07:55:15,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:15,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 07:55:15,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:15,677 INFO L124 PetriNetUnfolderBase]: 1600/3610 cut-off events. [2024-11-17 07:55:15,678 INFO L125 PetriNetUnfolderBase]: For 7991/8033 co-relation queries the response was YES. [2024-11-17 07:55:15,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10923 conditions, 3610 events. 1600/3610 cut-off events. For 7991/8033 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23991 event pairs, 251 based on Foata normal form. 111/3514 useless extension candidates. Maximal degree in co-relation 10896. Up to 897 conditions per place. [2024-11-17 07:55:15,709 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 144 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-11-17 07:55:15,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 159 transitions, 1455 flow [2024-11-17 07:55:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:55:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:55:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-11-17 07:55:15,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-11-17 07:55:15,710 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 363 flow. Second operand 6 states and 138 transitions. [2024-11-17 07:55:15,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 159 transitions, 1455 flow [2024-11-17 07:55:15,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 159 transitions, 1398 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:15,723 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 359 flow [2024-11-17 07:55:15,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=345, 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=6, PETRI_FLOW=359, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-11-17 07:55:15,724 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-11-17 07:55:15,724 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 359 flow [2024-11-17 07:55:15,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 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 07:55:15,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:15,724 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 07:55:15,742 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 07:55:15,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:15,925 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:15,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash 117943749, now seen corresponding path program 1 times [2024-11-17 07:55:15,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:15,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296258477] [2024-11-17 07:55:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:15,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:16,004 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 07:55:16,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296258477] [2024-11-17 07:55:16,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296258477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791193359] [2024-11-17 07:55:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:16,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:16,008 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 07:55:16,009 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 07:55:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:16,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:16,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:16,095 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 07:55:16,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:16,159 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 07:55:16,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791193359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:16,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:16,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:55:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266204775] [2024-11-17 07:55:16,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:16,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:55:16,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:16,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:55:16,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:55:16,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 07:55:16,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 359 flow. Second operand has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 0 states have call successors, (0), 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 07:55:16,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:16,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 07:55:16,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:17,095 INFO L124 PetriNetUnfolderBase]: 2870/6301 cut-off events. [2024-11-17 07:55:17,095 INFO L125 PetriNetUnfolderBase]: For 15752/15868 co-relation queries the response was YES. [2024-11-17 07:55:17,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20067 conditions, 6301 events. 2870/6301 cut-off events. For 15752/15868 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 44703 event pairs, 629 based on Foata normal form. 243/6386 useless extension candidates. Maximal degree in co-relation 20040. Up to 1842 conditions per place. [2024-11-17 07:55:17,145 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 243 selfloop transitions, 13 changer transitions 6/270 dead transitions. [2024-11-17 07:55:17,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 270 transitions, 2471 flow [2024-11-17 07:55:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:55:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:55:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-11-17 07:55:17,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5829268292682926 [2024-11-17 07:55:17,148 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 359 flow. Second operand 10 states and 239 transitions. [2024-11-17 07:55:17,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 270 transitions, 2471 flow [2024-11-17 07:55:17,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 270 transitions, 2441 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-17 07:55:17,172 INFO L231 Difference]: Finished difference. Result has 83 places, 64 transitions, 422 flow [2024-11-17 07:55:17,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=422, PETRI_PLACES=83, PETRI_TRANSITIONS=64} [2024-11-17 07:55:17,173 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-11-17 07:55:17,173 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 64 transitions, 422 flow [2024-11-17 07:55:17,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 0 states have call successors, (0), 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 07:55:17,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:17,174 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-17 07:55:17,191 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 07:55:17,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:17,375 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:17,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash -402163262, now seen corresponding path program 2 times [2024-11-17 07:55:17,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:17,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194029596] [2024-11-17 07:55:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:17,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:17,523 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 07:55:17,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:17,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194029596] [2024-11-17 07:55:17,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194029596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:17,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397435975] [2024-11-17 07:55:17,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:55:17,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:17,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:17,526 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 07:55:17,527 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 07:55:17,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:55:17,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:17,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:55:17,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:17,650 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 07:55:17,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:17,715 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 07:55:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397435975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:17,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:17,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-17 07:55:17,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175023913] [2024-11-17 07:55:17,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:17,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:55:17,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:17,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:55:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:55:17,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-11-17 07:55:17,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 64 transitions, 422 flow. Second operand has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 15 states have internal predecessors, (214), 0 states have call successors, (0), 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 07:55:17,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:17,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-11-17 07:55:17,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:19,157 INFO L124 PetriNetUnfolderBase]: 5060/9429 cut-off events. [2024-11-17 07:55:19,157 INFO L125 PetriNetUnfolderBase]: For 26013/26111 co-relation queries the response was YES. [2024-11-17 07:55:19,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30913 conditions, 9429 events. 5060/9429 cut-off events. For 26013/26111 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 63863 event pairs, 401 based on Foata normal form. 310/9171 useless extension candidates. Maximal degree in co-relation 30884. Up to 2104 conditions per place. [2024-11-17 07:55:19,233 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 308 selfloop transitions, 18 changer transitions 3/335 dead transitions. [2024-11-17 07:55:19,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 335 transitions, 2722 flow [2024-11-17 07:55:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:55:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:55:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 340 transitions. [2024-11-17 07:55:19,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2024-11-17 07:55:19,235 INFO L175 Difference]: Start difference. First operand has 83 places, 64 transitions, 422 flow. Second operand 15 states and 340 transitions. [2024-11-17 07:55:19,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 335 transitions, 2722 flow [2024-11-17 07:55:19,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 335 transitions, 2587 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-17 07:55:19,276 INFO L231 Difference]: Finished difference. Result has 91 places, 68 transitions, 462 flow [2024-11-17 07:55:19,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=462, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2024-11-17 07:55:19,277 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-11-17 07:55:19,277 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 462 flow [2024-11-17 07:55:19,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 15 states have internal predecessors, (214), 0 states have call successors, (0), 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 07:55:19,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:19,277 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2024-11-17 07:55:19,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:55:19,478 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,SelfDestructingSolverStorable14 [2024-11-17 07:55:19,478 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:19,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash 535071565, now seen corresponding path program 2 times [2024-11-17 07:55:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:19,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638394249] [2024-11-17 07:55:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:19,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:19,653 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 07:55:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638394249] [2024-11-17 07:55:19,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638394249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:19,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616167726] [2024-11-17 07:55:19,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:55:19,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:19,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:19,657 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 07:55:19,658 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 07:55:19,714 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:55:19,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:19,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 07:55:19,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:19,794 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 07:55:19,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:19,948 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 07:55:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616167726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:19,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:19,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-17 07:55:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427328333] [2024-11-17 07:55:19,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:19,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:55:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:19,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:55:19,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:55:19,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:19,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 462 flow. Second operand has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 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 07:55:19,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:19,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:19,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:22,049 INFO L124 PetriNetUnfolderBase]: 7900/17483 cut-off events. [2024-11-17 07:55:22,049 INFO L125 PetriNetUnfolderBase]: For 73987/74531 co-relation queries the response was YES. [2024-11-17 07:55:22,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57699 conditions, 17483 events. 7900/17483 cut-off events. For 73987/74531 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 142832 event pairs, 202 based on Foata normal form. 731/18205 useless extension candidates. Maximal degree in co-relation 57671. Up to 3123 conditions per place. [2024-11-17 07:55:22,231 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 414 selfloop transitions, 58 changer transitions 9/490 dead transitions. [2024-11-17 07:55:22,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 490 transitions, 3988 flow [2024-11-17 07:55:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 07:55:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 07:55:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 502 transitions. [2024-11-17 07:55:22,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7202295552367288 [2024-11-17 07:55:22,234 INFO L175 Difference]: Start difference. First operand has 91 places, 68 transitions, 462 flow. Second operand 17 states and 502 transitions. [2024-11-17 07:55:22,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 490 transitions, 3988 flow [2024-11-17 07:55:22,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 490 transitions, 3719 flow, removed 68 selfloop flow, removed 11 redundant places. [2024-11-17 07:55:22,313 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 1014 flow [2024-11-17 07:55:22,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, 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=1014, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-11-17 07:55:22,315 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-11-17 07:55:22,315 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 1014 flow [2024-11-17 07:55:22,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 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 07:55:22,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:22,315 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 07:55:22,333 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 07:55:22,516 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,SelfDestructingSolverStorable15 [2024-11-17 07:55:22,516 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:22,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1407694897, now seen corresponding path program 2 times [2024-11-17 07:55:22,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:22,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159467147] [2024-11-17 07:55:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:22,734 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 07:55:22,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:22,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159467147] [2024-11-17 07:55:22,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159467147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438154995] [2024-11-17 07:55:22,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:55:22,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:22,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:22,737 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 07:55:22,912 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 07:55:22,976 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:55:22,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:22,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:55:22,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:23,086 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 07:55:23,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:23,180 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 07:55:23,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438154995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:23,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:23,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-17 07:55:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974701825] [2024-11-17 07:55:23,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:23,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:55:23,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:23,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:55:23,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:55:23,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-17 07:55:23,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 1014 flow. Second operand has 15 states, 15 states have (on average 16.733333333333334) internal successors, (251), 15 states have internal predecessors, (251), 0 states have call successors, (0), 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 07:55:23,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:23,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-17 07:55:23,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:26,301 INFO L124 PetriNetUnfolderBase]: 11878/23992 cut-off events. [2024-11-17 07:55:26,301 INFO L125 PetriNetUnfolderBase]: For 91379/92281 co-relation queries the response was YES. [2024-11-17 07:55:26,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80270 conditions, 23992 events. 11878/23992 cut-off events. For 91379/92281 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 194194 event pairs, 1058 based on Foata normal form. 1333/25311 useless extension candidates. Maximal degree in co-relation 80228. Up to 3970 conditions per place. [2024-11-17 07:55:26,500 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 643 selfloop transitions, 22 changer transitions 38/710 dead transitions. [2024-11-17 07:55:26,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 710 transitions, 8841 flow [2024-11-17 07:55:26,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:55:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:55:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 334 transitions. [2024-11-17 07:55:26,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5430894308943089 [2024-11-17 07:55:26,502 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 1014 flow. Second operand 15 states and 334 transitions. [2024-11-17 07:55:26,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 710 transitions, 8841 flow [2024-11-17 07:55:26,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 710 transitions, 7957 flow, removed 387 selfloop flow, removed 8 redundant places. [2024-11-17 07:55:26,652 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 985 flow [2024-11-17 07:55:26,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=101, 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=985, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-11-17 07:55:26,653 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-11-17 07:55:26,653 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 985 flow [2024-11-17 07:55:26,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.733333333333334) internal successors, (251), 15 states have internal predecessors, (251), 0 states have call successors, (0), 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 07:55:26,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:26,653 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-17 07:55:26,671 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 07:55:26,857 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,SelfDestructingSolverStorable16 [2024-11-17 07:55:26,858 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:26,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1992130837, now seen corresponding path program 3 times [2024-11-17 07:55:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248818353] [2024-11-17 07:55:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:27,361 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 07:55:27,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:27,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248818353] [2024-11-17 07:55:27,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248818353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:27,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300697718] [2024-11-17 07:55:27,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:55:27,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:27,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:27,364 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 07:55:27,365 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 07:55:27,443 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-17 07:55:27,443 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:27,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 07:55:27,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:27,572 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 07:55:27,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:27,961 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 07:55:27,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300697718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:27,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:27,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-17 07:55:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387686234] [2024-11-17 07:55:27,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:27,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-17 07:55:27,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:27,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-17 07:55:27,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-17 07:55:27,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:27,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 985 flow. Second operand has 33 states, 33 states have (on average 18.90909090909091) internal successors, (624), 33 states have internal predecessors, (624), 0 states have call successors, (0), 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 07:55:27,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:27,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:27,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:34,659 INFO L124 PetriNetUnfolderBase]: 19082/44953 cut-off events. [2024-11-17 07:55:34,659 INFO L125 PetriNetUnfolderBase]: For 380491/380813 co-relation queries the response was YES. [2024-11-17 07:55:34,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147249 conditions, 44953 events. 19082/44953 cut-off events. For 380491/380813 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 403923 event pairs, 263 based on Foata normal form. 1378/46308 useless extension candidates. Maximal degree in co-relation 147212. Up to 6515 conditions per place. [2024-11-17 07:55:35,102 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 885 selfloop transitions, 214 changer transitions 0/1107 dead transitions. [2024-11-17 07:55:35,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 1107 transitions, 10304 flow [2024-11-17 07:55:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-17 07:55:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-17 07:55:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 936 transitions. [2024-11-17 07:55:35,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6917960088691796 [2024-11-17 07:55:35,106 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 985 flow. Second operand 33 states and 936 transitions. [2024-11-17 07:55:35,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 1107 transitions, 10304 flow [2024-11-17 07:55:35,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 1107 transitions, 8653 flow, removed 217 selfloop flow, removed 12 redundant places. [2024-11-17 07:55:35,449 INFO L231 Difference]: Finished difference. Result has 164 places, 268 transitions, 3072 flow [2024-11-17 07:55:35,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=102, 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=3072, PETRI_PLACES=164, PETRI_TRANSITIONS=268} [2024-11-17 07:55:35,450 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-11-17 07:55:35,450 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 268 transitions, 3072 flow [2024-11-17 07:55:35,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 18.90909090909091) internal successors, (624), 33 states have internal predecessors, (624), 0 states have call successors, (0), 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 07:55:35,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:35,451 INFO L204 CegarLoopForPetriNet]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1] [2024-11-17 07:55:35,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 07:55:35,652 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,SelfDestructingSolverStorable17 [2024-11-17 07:55:35,652 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:55:35,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash -466199387, now seen corresponding path program 4 times [2024-11-17 07:55:35,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:35,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006286372] [2024-11-17 07:55:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:35,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:37,507 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 07:55:37,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006286372] [2024-11-17 07:55:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006286372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:37,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355110010] [2024-11-17 07:55:37,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 07:55:37,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:37,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:37,510 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 07:55:37,512 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 07:55:37,618 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 07:55:37,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:55:37,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-17 07:55:37,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:37,857 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 07:55:37,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:39,090 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 07:55:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355110010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:39,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-17 07:55:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983906505] [2024-11-17 07:55:39,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:39,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-17 07:55:39,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-17 07:55:39,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-17 07:55:39,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-17 07:55:39,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 268 transitions, 3072 flow. Second operand has 65 states, 65 states have (on average 18.953846153846154) internal successors, (1232), 65 states have internal predecessors, (1232), 0 states have call successors, (0), 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 07:55:39,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:39,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-17 07:55:39,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand