./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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/test-easy6.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 ce46a456eb9ebd463906f73dade5d1c1c222b26a063863b37340a2842c9ee284 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:09:48,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:09:48,075 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:09:48,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:09:48,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:09:48,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:09:48,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:09:48,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:09:48,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:09:48,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:09:48,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:09:48,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:09:48,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:09:48,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:09:48,120 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:09:48,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:09:48,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:09:48,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:09:48,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:09:48,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:09:48,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:09:48,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:09:48,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:09:48,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:09:48,127 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:09:48,130 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:09:48,130 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:09:48,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:09:48,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:09:48,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:09:48,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:09:48,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:09:48,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:09:48,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:09:48,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:48,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:09:48,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:09:48,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:09:48,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:09:48,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:09:48,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:09:48,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:09:48,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:09:48,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:09:48,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce46a456eb9ebd463906f73dade5d1c1c222b26a063863b37340a2842c9ee284 [2024-11-19 14:09:48,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:09:48,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:09:48,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:09:48,450 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:09:48,450 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:09:48,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy6.wvr.c [2024-11-19 14:09:49,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:09:50,080 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:09:50,081 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c [2024-11-19 14:09:50,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d28ebf0f/3a002feae12148dfa9ea611b44715fc1/FLAGd6fba9386 [2024-11-19 14:09:50,430 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d28ebf0f/3a002feae12148dfa9ea611b44715fc1 [2024-11-19 14:09:50,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:09:50,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:09:50,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:50,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:09:50,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:09:50,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26af7df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50, skipping insertion in model container [2024-11-19 14:09:50,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,471 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:09:50,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:50,672 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:09:50,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:50,705 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:09:50,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50 WrapperNode [2024-11-19 14:09:50,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:50,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:50,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:09:50,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:09:50,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,741 INFO L138 Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2024-11-19 14:09:50,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:50,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:09:50,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:09:50,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:09:50,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,767 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]. [2024-11-19 14:09:50,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:09:50,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:09:50,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:09:50,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:09:50,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (1/1) ... [2024-11-19 14:09:50,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:50,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:50,818 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) [2024-11-19 14:09:50,822 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 [2024-11-19 14:09:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:09:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:09:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:09:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:09:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:09:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:09:50,874 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:09:51,013 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:09:51,020 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:09:51,302 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:09:51,302 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:09:51,441 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:09:51,441 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 14:09:51,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:51 BoogieIcfgContainer [2024-11-19 14:09:51,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:09:51,445 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:09:51,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:09:51,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:09:51,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:09:50" (1/3) ... [2024-11-19 14:09:51,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c21d441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:51, skipping insertion in model container [2024-11-19 14:09:51,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:50" (2/3) ... [2024-11-19 14:09:51,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c21d441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:51, skipping insertion in model container [2024-11-19 14:09:51,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:51" (3/3) ... [2024-11-19 14:09:51,453 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-11-19 14:09:51,470 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:09:51,470 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 14:09:51,470 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:09:51,515 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:09:51,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 46 transitions, 106 flow [2024-11-19 14:09:51,602 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2024-11-19 14:09:51,603 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:09:51,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 0/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-19 14:09:51,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 46 transitions, 106 flow [2024-11-19 14:09:51,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 42 transitions, 93 flow [2024-11-19 14:09:51,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:09:51,636 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;@2cb0d52d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:09:51,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 14:09:51,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:09:51,642 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 14:09:51,642 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:09:51,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:51,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 14:09:51,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:51,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash -31018003, now seen corresponding path program 1 times [2024-11-19 14:09:51,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:51,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497890024] [2024-11-19 14:09:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:51,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:51,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:51,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497890024] [2024-11-19 14:09:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497890024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:51,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392247308] [2024-11-19 14:09:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:51,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:51,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:51,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2024-11-19 14:09:51,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-19 14:09:51,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:51,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2024-11-19 14:09:51,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:52,167 INFO L124 PetriNetUnfolderBase]: 98/344 cut-off events. [2024-11-19 14:09:52,167 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-19 14:09:52,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 344 events. 98/344 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1933 event pairs, 31 based on Foata normal form. 23/317 useless extension candidates. Maximal degree in co-relation 505. Up to 67 conditions per place. [2024-11-19 14:09:52,179 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 26 selfloop transitions, 5 changer transitions 2/60 dead transitions. [2024-11-19 14:09:52,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 204 flow [2024-11-19 14:09:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:09:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:09:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-11-19 14:09:52,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7913043478260869 [2024-11-19 14:09:52,196 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 93 flow. Second operand 5 states and 182 transitions. [2024-11-19 14:09:52,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 204 flow [2024-11-19 14:09:52,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 193 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:52,206 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 118 flow [2024-11-19 14:09:52,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-11-19 14:09:52,213 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2024-11-19 14:09:52,214 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 118 flow [2024-11-19 14:09:52,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-19 14:09:52,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:52,214 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:52,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:09:52,215 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:52,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:52,215 INFO L85 PathProgramCache]: Analyzing trace with hash -711802315, now seen corresponding path program 1 times [2024-11-19 14:09:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:52,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604042644] [2024-11-19 14:09:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:52,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:52,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604042644] [2024-11-19 14:09:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604042644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:52,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:52,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048816472] [2024-11-19 14:09:52,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:52,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:52,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:52,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2024-11-19 14:09:52,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2024-11-19 14:09:52,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:52,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2024-11-19 14:09:52,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:52,547 INFO L124 PetriNetUnfolderBase]: 139/509 cut-off events. [2024-11-19 14:09:52,547 INFO L125 PetriNetUnfolderBase]: For 15/17 co-relation queries the response was YES. [2024-11-19 14:09:52,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 509 events. 139/509 cut-off events. For 15/17 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3204 event pairs, 53 based on Foata normal form. 20/441 useless extension candidates. Maximal degree in co-relation 683. Up to 109 conditions per place. [2024-11-19 14:09:52,553 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 27 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2024-11-19 14:09:52,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 223 flow [2024-11-19 14:09:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:09:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:09:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-11-19 14:09:52,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7913043478260869 [2024-11-19 14:09:52,556 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 118 flow. Second operand 5 states and 182 transitions. [2024-11-19 14:09:52,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 223 flow [2024-11-19 14:09:52,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:52,559 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 145 flow [2024-11-19 14:09:52,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-11-19 14:09:52,560 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2024-11-19 14:09:52,560 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 145 flow [2024-11-19 14:09:52,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2024-11-19 14:09:52,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:52,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:52,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:09:52,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:52,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:52,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1241280913, now seen corresponding path program 1 times [2024-11-19 14:09:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:52,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393115] [2024-11-19 14:09:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:52,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:52,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393115] [2024-11-19 14:09:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33917676] [2024-11-19 14:09:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:52,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:52,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2024-11-19 14:09:52,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2024-11-19 14:09:52,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:52,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2024-11-19 14:09:52,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:52,854 INFO L124 PetriNetUnfolderBase]: 205/618 cut-off events. [2024-11-19 14:09:52,855 INFO L125 PetriNetUnfolderBase]: For 58/64 co-relation queries the response was YES. [2024-11-19 14:09:52,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 618 events. 205/618 cut-off events. For 58/64 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3979 event pairs, 53 based on Foata normal form. 52/626 useless extension candidates. Maximal degree in co-relation 771. Up to 207 conditions per place. [2024-11-19 14:09:52,862 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 19 selfloop transitions, 4 changer transitions 5/59 dead transitions. [2024-11-19 14:09:52,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 230 flow [2024-11-19 14:09:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-11-19 14:09:52,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8043478260869565 [2024-11-19 14:09:52,867 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 145 flow. Second operand 4 states and 148 transitions. [2024-11-19 14:09:52,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 230 flow [2024-11-19 14:09:52,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:52,872 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 168 flow [2024-11-19 14:09:52,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-11-19 14:09:52,875 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-11-19 14:09:52,876 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 168 flow [2024-11-19 14:09:52,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2024-11-19 14:09:52,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:52,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:52,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:09:52,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:52,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1960076505, now seen corresponding path program 1 times [2024-11-19 14:09:52,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252018923] [2024-11-19 14:09:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:52,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:52,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252018923] [2024-11-19 14:09:52,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252018923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:52,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:52,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:52,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904134270] [2024-11-19 14:09:52,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:52,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:52,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:52,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:52,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:09:53,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-11-19 14:09:53,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:53,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:53,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-11-19 14:09:53,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:53,267 INFO L124 PetriNetUnfolderBase]: 186/629 cut-off events. [2024-11-19 14:09:53,268 INFO L125 PetriNetUnfolderBase]: For 297/313 co-relation queries the response was YES. [2024-11-19 14:09:53,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 629 events. 186/629 cut-off events. For 297/313 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4281 event pairs, 28 based on Foata normal form. 17/593 useless extension candidates. Maximal degree in co-relation 710. Up to 82 conditions per place. [2024-11-19 14:09:53,274 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 51 selfloop transitions, 17 changer transitions 0/91 dead transitions. [2024-11-19 14:09:53,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 438 flow [2024-11-19 14:09:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 334 transitions. [2024-11-19 14:09:53,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6600790513833992 [2024-11-19 14:09:53,277 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 168 flow. Second operand 11 states and 334 transitions. [2024-11-19 14:09:53,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 438 flow [2024-11-19 14:09:53,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:53,281 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 259 flow [2024-11-19 14:09:53,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=259, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-11-19 14:09:53,282 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-11-19 14:09:53,282 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 259 flow [2024-11-19 14:09:53,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:53,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:53,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:53,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:09:53,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:53,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash -110349287, now seen corresponding path program 1 times [2024-11-19 14:09:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:53,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528282572] [2024-11-19 14:09:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:53,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:53,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:53,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528282572] [2024-11-19 14:09:53,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528282572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:53,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:53,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:53,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317061349] [2024-11-19 14:09:53,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:53,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:53,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:09:53,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-11-19 14:09:53,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:53,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:53,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-11-19 14:09:53,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:53,626 INFO L124 PetriNetUnfolderBase]: 176/611 cut-off events. [2024-11-19 14:09:53,626 INFO L125 PetriNetUnfolderBase]: For 588/600 co-relation queries the response was YES. [2024-11-19 14:09:53,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 611 events. 176/611 cut-off events. For 588/600 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4158 event pairs, 28 based on Foata normal form. 20/580 useless extension candidates. Maximal degree in co-relation 779. Up to 78 conditions per place. [2024-11-19 14:09:53,631 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 48 selfloop transitions, 18 changer transitions 0/89 dead transitions. [2024-11-19 14:09:53,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 477 flow [2024-11-19 14:09:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 331 transitions. [2024-11-19 14:09:53,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6541501976284585 [2024-11-19 14:09:53,633 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 259 flow. Second operand 11 states and 331 transitions. [2024-11-19 14:09:53,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 477 flow [2024-11-19 14:09:53,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 461 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:53,643 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 288 flow [2024-11-19 14:09:53,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=288, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2024-11-19 14:09:53,644 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 28 predicate places. [2024-11-19 14:09:53,645 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 288 flow [2024-11-19 14:09:53,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:53,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:53,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:53,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:09:53,646 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:53,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:53,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2015625369, now seen corresponding path program 1 times [2024-11-19 14:09:53,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:53,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508358660] [2024-11-19 14:09:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:53,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:53,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508358660] [2024-11-19 14:09:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508358660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:53,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818336400] [2024-11-19 14:09:53,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:53,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:53,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:53,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2024-11-19 14:09:53,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-19 14:09:53,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:53,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2024-11-19 14:09:53,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:53,805 INFO L124 PetriNetUnfolderBase]: 167/560 cut-off events. [2024-11-19 14:09:53,806 INFO L125 PetriNetUnfolderBase]: For 427/439 co-relation queries the response was YES. [2024-11-19 14:09:53,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 560 events. 167/560 cut-off events. For 427/439 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3759 event pairs, 38 based on Foata normal form. 58/579 useless extension candidates. Maximal degree in co-relation 799. Up to 167 conditions per place. [2024-11-19 14:09:53,809 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 20 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-19 14:09:53,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 357 flow [2024-11-19 14:09:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-19 14:09:53,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.782608695652174 [2024-11-19 14:09:53,811 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 288 flow. Second operand 4 states and 144 transitions. [2024-11-19 14:09:53,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 357 flow [2024-11-19 14:09:53,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 302 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-11-19 14:09:53,814 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 259 flow [2024-11-19 14:09:53,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=259, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-11-19 14:09:53,815 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-19 14:09:53,815 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 259 flow [2024-11-19 14:09:53,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-19 14:09:53,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:53,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:53,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:09:53,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:53,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1060581310, now seen corresponding path program 1 times [2024-11-19 14:09:53,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:53,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301591607] [2024-11-19 14:09:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:53,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:53,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:53,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301591607] [2024-11-19 14:09:53,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301591607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:53,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:53,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:53,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160331392] [2024-11-19 14:09:53,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:53,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:53,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:53,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:53,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:09:53,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-11-19 14:09:53,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:53,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:53,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-11-19 14:09:53,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:54,063 INFO L124 PetriNetUnfolderBase]: 171/597 cut-off events. [2024-11-19 14:09:54,063 INFO L125 PetriNetUnfolderBase]: For 511/525 co-relation queries the response was YES. [2024-11-19 14:09:54,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 597 events. 171/597 cut-off events. For 511/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4208 event pairs, 67 based on Foata normal form. 15/585 useless extension candidates. Maximal degree in co-relation 484. Up to 146 conditions per place. [2024-11-19 14:09:54,067 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 36 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2024-11-19 14:09:54,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 393 flow [2024-11-19 14:09:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:09:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:09:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-11-19 14:09:54,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6385869565217391 [2024-11-19 14:09:54,069 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 259 flow. Second operand 8 states and 235 transitions. [2024-11-19 14:09:54,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 393 flow [2024-11-19 14:09:54,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:54,072 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 268 flow [2024-11-19 14:09:54,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=268, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2024-11-19 14:09:54,073 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 27 predicate places. [2024-11-19 14:09:54,073 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 268 flow [2024-11-19 14:09:54,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:54,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:54,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:09:54,074 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:54,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:54,075 INFO L85 PathProgramCache]: Analyzing trace with hash 874139696, now seen corresponding path program 1 times [2024-11-19 14:09:54,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:54,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461416524] [2024-11-19 14:09:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461416524] [2024-11-19 14:09:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461416524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458249927] [2024-11-19 14:09:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:54,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:54,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:09:54,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-11-19 14:09:54,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:54,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-11-19 14:09:54,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:54,314 INFO L124 PetriNetUnfolderBase]: 161/572 cut-off events. [2024-11-19 14:09:54,315 INFO L125 PetriNetUnfolderBase]: For 516/540 co-relation queries the response was YES. [2024-11-19 14:09:54,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 572 events. 161/572 cut-off events. For 516/540 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3978 event pairs, 69 based on Foata normal form. 12/559 useless extension candidates. Maximal degree in co-relation 807. Up to 146 conditions per place. [2024-11-19 14:09:54,318 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 36 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2024-11-19 14:09:54,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 402 flow [2024-11-19 14:09:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:09:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:09:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-11-19 14:09:54,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6385869565217391 [2024-11-19 14:09:54,320 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 268 flow. Second operand 8 states and 235 transitions. [2024-11-19 14:09:54,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 402 flow [2024-11-19 14:09:54,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 368 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 14:09:54,323 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 256 flow [2024-11-19 14:09:54,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=256, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-11-19 14:09:54,326 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2024-11-19 14:09:54,327 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 256 flow [2024-11-19 14:09:54,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:54,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:54,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:09:54,329 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:54,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1908656825, now seen corresponding path program 1 times [2024-11-19 14:09:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095595020] [2024-11-19 14:09:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:54,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:54,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095595020] [2024-11-19 14:09:54,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095595020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:54,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:54,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377344130] [2024-11-19 14:09:54,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:54,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:09:54,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-11-19 14:09:54,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:54,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-11-19 14:09:54,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:54,588 INFO L124 PetriNetUnfolderBase]: 210/654 cut-off events. [2024-11-19 14:09:54,589 INFO L125 PetriNetUnfolderBase]: For 436/444 co-relation queries the response was YES. [2024-11-19 14:09:54,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 654 events. 210/654 cut-off events. For 436/444 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4413 event pairs, 61 based on Foata normal form. 17/637 useless extension candidates. Maximal degree in co-relation 1002. Up to 115 conditions per place. [2024-11-19 14:09:54,592 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 25 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-11-19 14:09:54,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 335 flow [2024-11-19 14:09:54,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-11-19 14:09:54,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.677536231884058 [2024-11-19 14:09:54,594 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 256 flow. Second operand 6 states and 187 transitions. [2024-11-19 14:09:54,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 335 flow [2024-11-19 14:09:54,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 309 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 14:09:54,596 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 234 flow [2024-11-19 14:09:54,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2024-11-19 14:09:54,598 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-19 14:09:54,599 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 234 flow [2024-11-19 14:09:54,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:54,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:54,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:09:54,600 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:54,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash -162457239, now seen corresponding path program 1 times [2024-11-19 14:09:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:54,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639508630] [2024-11-19 14:09:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:54,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639508630] [2024-11-19 14:09:54,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639508630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:54,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:54,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034530822] [2024-11-19 14:09:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:54,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:54,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:54,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:09:54,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-11-19 14:09:54,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:54,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-11-19 14:09:54,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:54,833 INFO L124 PetriNetUnfolderBase]: 198/630 cut-off events. [2024-11-19 14:09:54,833 INFO L125 PetriNetUnfolderBase]: For 575/583 co-relation queries the response was YES. [2024-11-19 14:09:54,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 630 events. 198/630 cut-off events. For 575/583 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4206 event pairs, 61 based on Foata normal form. 12/608 useless extension candidates. Maximal degree in co-relation 971. Up to 115 conditions per place. [2024-11-19 14:09:54,837 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 24 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-11-19 14:09:54,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 311 flow [2024-11-19 14:09:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-19 14:09:54,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-19 14:09:54,838 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 234 flow. Second operand 6 states and 186 transitions. [2024-11-19 14:09:54,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 311 flow [2024-11-19 14:09:54,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:09:54,840 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 227 flow [2024-11-19 14:09:54,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-11-19 14:09:54,841 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-19 14:09:54,841 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 227 flow [2024-11-19 14:09:54,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:54,841 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:54,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:09:54,842 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:54,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:54,842 INFO L85 PathProgramCache]: Analyzing trace with hash 888307546, now seen corresponding path program 1 times [2024-11-19 14:09:54,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:54,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144447187] [2024-11-19 14:09:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:54,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:54,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:54,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144447187] [2024-11-19 14:09:54,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144447187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:54,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:54,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:54,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703354623] [2024-11-19 14:09:54,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:54,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:54,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:54,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:09:54,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-11-19 14:09:54,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:54,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-11-19 14:09:54,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:55,072 INFO L124 PetriNetUnfolderBase]: 182/597 cut-off events. [2024-11-19 14:09:55,072 INFO L125 PetriNetUnfolderBase]: For 572/580 co-relation queries the response was YES. [2024-11-19 14:09:55,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 597 events. 182/597 cut-off events. For 572/580 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4002 event pairs, 70 based on Foata normal form. 17/580 useless extension candidates. Maximal degree in co-relation 910. Up to 126 conditions per place. [2024-11-19 14:09:55,076 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 13 selfloop transitions, 3 changer transitions 15/61 dead transitions. [2024-11-19 14:09:55,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 61 transitions, 289 flow [2024-11-19 14:09:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-19 14:09:55,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6594202898550725 [2024-11-19 14:09:55,077 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 227 flow. Second operand 6 states and 182 transitions. [2024-11-19 14:09:55,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 61 transitions, 289 flow [2024-11-19 14:09:55,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 277 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:55,079 INFO L231 Difference]: Finished difference. Result has 72 places, 42 transitions, 160 flow [2024-11-19 14:09:55,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=72, PETRI_TRANSITIONS=42} [2024-11-19 14:09:55,080 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2024-11-19 14:09:55,080 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 42 transitions, 160 flow [2024-11-19 14:09:55,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:55,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:55,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:55,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:09:55,081 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:09:55,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash 958217944, now seen corresponding path program 1 times [2024-11-19 14:09:55,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:55,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835716553] [2024-11-19 14:09:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:55,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:55,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835716553] [2024-11-19 14:09:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835716553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:55,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:55,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91607659] [2024-11-19 14:09:55,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:55,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:55,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:09:55,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-11-19 14:09:55,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 42 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:55,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:55,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-11-19 14:09:55,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:55,233 INFO L124 PetriNetUnfolderBase]: 78/272 cut-off events. [2024-11-19 14:09:55,234 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-11-19 14:09:55,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 272 events. 78/272 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1387 event pairs, 39 based on Foata normal form. 12/265 useless extension candidates. Maximal degree in co-relation 481. Up to 80 conditions per place. [2024-11-19 14:09:55,235 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-11-19 14:09:55,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 43 transitions, 184 flow [2024-11-19 14:09:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-19 14:09:55,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-11-19 14:09:55,236 INFO L175 Difference]: Start difference. First operand has 72 places, 42 transitions, 160 flow. Second operand 4 states and 118 transitions. [2024-11-19 14:09:55,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 43 transitions, 184 flow [2024-11-19 14:09:55,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 43 transitions, 170 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-19 14:09:55,237 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-11-19 14:09:55,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-11-19 14:09:55,238 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-11-19 14:09:55,238 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-11-19 14:09:55,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:55,240 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2024-11-19 14:09:55,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2024-11-19 14:09:55,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-19 14:09:55,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-19 14:09:55,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-19 14:09:55,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-19 14:09:55,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-19 14:09:55,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-19 14:09:55,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2024-11-19 14:09:55,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-19 14:09:55,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-19 14:09:55,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-19 14:09:55,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-19 14:09:55,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-19 14:09:55,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-19 14:09:55,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-19 14:09:55,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-19 14:09:55,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-19 14:09:55,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:09:55,243 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:55,248 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 14:09:55,248 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 14:09:55,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:09:55 BasicIcfg [2024-11-19 14:09:55,254 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 14:09:55,254 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:09:55,254 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:09:55,254 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:09:55,255 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:51" (3/4) ... [2024-11-19 14:09:55,256 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 14:09:55,259 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 14:09:55,259 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 14:09:55,264 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-19 14:09:55,265 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-19 14:09:55,265 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 14:09:55,265 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 14:09:55,342 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 14:09:55,342 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 14:09:55,342 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:09:55,343 INFO L158 Benchmark]: Toolchain (without parser) took 4909.36ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 133.8MB in the beginning and 105.9MB in the end (delta: 27.9MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2024-11-19 14:09:55,343 INFO L158 Benchmark]: CDTParser took 1.15ms. Allocated memory is still 165.7MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:09:55,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.60ms. Allocated memory is still 165.7MB. Free memory was 133.8MB in the beginning and 121.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 14:09:55,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.74ms. Allocated memory is still 165.7MB. Free memory was 121.5MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:09:55,343 INFO L158 Benchmark]: Boogie Preprocessor took 36.84ms. Allocated memory is still 165.7MB. Free memory was 119.4MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:09:55,344 INFO L158 Benchmark]: RCFGBuilder took 659.51ms. Allocated memory is still 165.7MB. Free memory was 117.4MB in the beginning and 119.2MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-19 14:09:55,344 INFO L158 Benchmark]: TraceAbstraction took 3809.01ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 118.9MB in the beginning and 110.1MB in the end (delta: 8.8MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. [2024-11-19 14:09:55,344 INFO L158 Benchmark]: Witness Printer took 88.02ms. Allocated memory is still 209.7MB. Free memory was 110.1MB in the beginning and 105.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 14:09:55,345 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15ms. Allocated memory is still 165.7MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.60ms. Allocated memory is still 165.7MB. Free memory was 133.8MB in the beginning and 121.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.74ms. Allocated memory is still 165.7MB. Free memory was 121.5MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.84ms. Allocated memory is still 165.7MB. Free memory was 119.4MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 659.51ms. Allocated memory is still 165.7MB. Free memory was 117.4MB in the beginning and 119.2MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3809.01ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 118.9MB in the beginning and 110.1MB in the end (delta: 8.8MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. * Witness Printer took 88.02ms. Allocated memory is still 209.7MB. Free memory was 110.1MB in the beginning and 105.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 87 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 899 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 751 mSDsluCounter, 489 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 399 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 991 IncrementalHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 90 mSDtfsCounter, 991 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=5, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 14:09:55,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE