./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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-803cd42-m [2024-11-23 02:01:57,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:01:57,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 02:01:57,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:01:57,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:01:57,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:01:57,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:01:57,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:01:57,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:01:57,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:01:57,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 02:01:57,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 02:01:57,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:01:57,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:01:57,540 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:01:57,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:01:57,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 02:01:57,541 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:01:57,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:01:57,542 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:01:57,542 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:01:57,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 02:01:57,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 02:01:57,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 02:01:57,545 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:01:57,545 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 02:01:57,545 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:01:57,545 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:01:57,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:01:57,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:01:57,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:01:57,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:01:57,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 02:01:57,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 02:01:57,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:01:57,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:01:57,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 02:01:57,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 02:01:57,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:01:57,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 02:01:57,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 02:01:57,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 02:01:57,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 02:01:57,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 02:01:57,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce46a456eb9ebd463906f73dade5d1c1c222b26a063863b37340a2842c9ee284 [2024-11-23 02:01:57,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:01:57,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:01:57,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:01:57,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:01:57,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:01:57,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy6.wvr.c [2024-11-23 02:01:59,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:01:59,148 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:01:59,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c [2024-11-23 02:01:59,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1efc4536/f4b6992cd6a546d187267962168e954d/FLAGb34d70746 [2024-11-23 02:01:59,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1efc4536/f4b6992cd6a546d187267962168e954d [2024-11-23 02:01:59,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:01:59,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:01:59,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:01:59,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:01:59,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:01:59,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d4a695e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59, skipping insertion in model container [2024-11-23 02:01:59,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:01:59,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:01:59,365 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:01:59,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:01:59,400 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:01:59,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59 WrapperNode [2024-11-23 02:01:59,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:01:59,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:01:59,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:01:59,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:01:59,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,446 INFO L138 Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2024-11-23 02:01:59,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:01:59,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:01:59,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:01:59,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:01:59,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,460 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,470 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]. [2024-11-23 02:01:59,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:01:59,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:01:59,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:01:59,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:01:59,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (1/1) ... [2024-11-23 02:01:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:01:59,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:59,515 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) [2024-11-23 02:01:59,517 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 [2024-11-23 02:01:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:01:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 02:01:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 02:01:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 02:01:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 02:01:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:01:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:01:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:01:59,559 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 02:01:59,629 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:01:59,631 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:01:59,803 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 02:01:59,804 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:01:59,900 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:01:59,900 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 02:01:59,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:59 BoogieIcfgContainer [2024-11-23 02:01:59,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:01:59,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 02:01:59,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 02:01:59,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 02:01:59,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:01:59" (1/3) ... [2024-11-23 02:01:59,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd2c645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:59, skipping insertion in model container [2024-11-23 02:01:59,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:59" (2/3) ... [2024-11-23 02:01:59,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd2c645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:59, skipping insertion in model container [2024-11-23 02:01:59,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:59" (3/3) ... [2024-11-23 02:01:59,909 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-11-23 02:01:59,923 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 02:01:59,923 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-23 02:01:59,923 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 02:01:59,954 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 02:01:59,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 46 transitions, 106 flow [2024-11-23 02:02:00,000 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2024-11-23 02:02:00,002 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 02:02:00,004 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. [2024-11-23 02:02:00,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 46 transitions, 106 flow [2024-11-23 02:02:00,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 42 transitions, 93 flow [2024-11-23 02:02:00,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:02:00,021 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;@5da98e02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:02:00,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-23 02:02:00,025 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:02:00,025 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-23 02:02:00,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:02:00,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:00,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 02:02:00,027 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:00,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:00,031 INFO L85 PathProgramCache]: Analyzing trace with hash -31018003, now seen corresponding path program 1 times [2024-11-23 02:02:00,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:00,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989064430] [2024-11-23 02:02:00,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:00,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:00,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989064430] [2024-11-23 02:02:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989064430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:00,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:00,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:00,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18340986] [2024-11-23 02:02:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:00,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:00,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:00,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2024-11-23 02:02:00,269 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) [2024-11-23 02:02:00,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:00,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2024-11-23 02:02:00,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:00,458 INFO L124 PetriNetUnfolderBase]: 98/344 cut-off events. [2024-11-23 02:02:00,458 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-23 02:02:00,461 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. [2024-11-23 02:02:00,464 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 26 selfloop transitions, 5 changer transitions 2/60 dead transitions. [2024-11-23 02:02:00,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 204 flow [2024-11-23 02:02:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:02:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:02:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-11-23 02:02:00,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7913043478260869 [2024-11-23 02:02:00,478 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 93 flow. Second operand 5 states and 182 transitions. [2024-11-23 02:02:00,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 204 flow [2024-11-23 02:02:00,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 193 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:00,486 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 118 flow [2024-11-23 02:02:00,487 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} [2024-11-23 02:02:00,490 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2024-11-23 02:02:00,490 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 118 flow [2024-11-23 02:02:00,491 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) [2024-11-23 02:02:00,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:00,492 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:00,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 02:02:00,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:00,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash -711802315, now seen corresponding path program 1 times [2024-11-23 02:02:00,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:00,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069849788] [2024-11-23 02:02:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:00,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:00,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069849788] [2024-11-23 02:02:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069849788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:00,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:00,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857350686] [2024-11-23 02:02:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:00,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:00,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2024-11-23 02:02:00,586 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) [2024-11-23 02:02:00,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:00,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2024-11-23 02:02:00,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:00,676 INFO L124 PetriNetUnfolderBase]: 139/509 cut-off events. [2024-11-23 02:02:00,676 INFO L125 PetriNetUnfolderBase]: For 15/17 co-relation queries the response was YES. [2024-11-23 02:02:00,680 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. [2024-11-23 02:02:00,682 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 27 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2024-11-23 02:02:00,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 223 flow [2024-11-23 02:02:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:02:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:02:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-11-23 02:02:00,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7913043478260869 [2024-11-23 02:02:00,684 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 118 flow. Second operand 5 states and 182 transitions. [2024-11-23 02:02:00,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 223 flow [2024-11-23 02:02:00,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:00,686 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 145 flow [2024-11-23 02:02:00,686 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} [2024-11-23 02:02:00,687 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2024-11-23 02:02:00,687 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 145 flow [2024-11-23 02:02:00,687 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) [2024-11-23 02:02:00,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:00,687 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:00,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 02:02:00,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:00,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1241280913, now seen corresponding path program 1 times [2024-11-23 02:02:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587162916] [2024-11-23 02:02:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:00,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587162916] [2024-11-23 02:02:00,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587162916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:00,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:00,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:00,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039420956] [2024-11-23 02:02:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:00,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:00,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:00,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2024-11-23 02:02:00,792 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) [2024-11-23 02:02:00,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:00,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2024-11-23 02:02:00,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:00,902 INFO L124 PetriNetUnfolderBase]: 205/618 cut-off events. [2024-11-23 02:02:00,903 INFO L125 PetriNetUnfolderBase]: For 58/64 co-relation queries the response was YES. [2024-11-23 02:02:00,905 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. [2024-11-23 02:02:00,906 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 19 selfloop transitions, 4 changer transitions 5/59 dead transitions. [2024-11-23 02:02:00,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 230 flow [2024-11-23 02:02:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-11-23 02:02:00,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8043478260869565 [2024-11-23 02:02:00,908 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 145 flow. Second operand 4 states and 148 transitions. [2024-11-23 02:02:00,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 230 flow [2024-11-23 02:02:00,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:00,911 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 168 flow [2024-11-23 02:02:00,911 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} [2024-11-23 02:02:00,912 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-11-23 02:02:00,912 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 168 flow [2024-11-23 02:02:00,912 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) [2024-11-23 02:02:00,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:00,913 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:00,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 02:02:00,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:00,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1960076505, now seen corresponding path program 1 times [2024-11-23 02:02:00,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:00,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087988384] [2024-11-23 02:02:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:00,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:00,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087988384] [2024-11-23 02:02:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087988384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:00,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:00,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178489837] [2024-11-23 02:02:00,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:00,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:00,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:01,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-11-23 02:02:01,032 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) [2024-11-23 02:02:01,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:01,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-11-23 02:02:01,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:01,218 INFO L124 PetriNetUnfolderBase]: 186/629 cut-off events. [2024-11-23 02:02:01,218 INFO L125 PetriNetUnfolderBase]: For 297/313 co-relation queries the response was YES. [2024-11-23 02:02:01,219 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. [2024-11-23 02:02:01,222 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 51 selfloop transitions, 17 changer transitions 0/91 dead transitions. [2024-11-23 02:02:01,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 438 flow [2024-11-23 02:02:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 02:02:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 02:02:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 334 transitions. [2024-11-23 02:02:01,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6600790513833992 [2024-11-23 02:02:01,224 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 168 flow. Second operand 11 states and 334 transitions. [2024-11-23 02:02:01,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 438 flow [2024-11-23 02:02:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:01,228 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 259 flow [2024-11-23 02:02:01,228 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} [2024-11-23 02:02:01,230 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-11-23 02:02:01,230 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 259 flow [2024-11-23 02:02:01,230 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) [2024-11-23 02:02:01,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:01,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:01,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 02:02:01,231 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:01,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -110349287, now seen corresponding path program 1 times [2024-11-23 02:02:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152266001] [2024-11-23 02:02:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:01,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:01,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:01,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152266001] [2024-11-23 02:02:01,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152266001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:01,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:01,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:01,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582783940] [2024-11-23 02:02:01,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:01,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:01,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:01,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:01,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-11-23 02:02:01,341 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) [2024-11-23 02:02:01,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:01,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-11-23 02:02:01,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:01,490 INFO L124 PetriNetUnfolderBase]: 176/611 cut-off events. [2024-11-23 02:02:01,490 INFO L125 PetriNetUnfolderBase]: For 588/600 co-relation queries the response was YES. [2024-11-23 02:02:01,491 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. [2024-11-23 02:02:01,493 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 48 selfloop transitions, 18 changer transitions 0/89 dead transitions. [2024-11-23 02:02:01,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 477 flow [2024-11-23 02:02:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 02:02:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 02:02:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 331 transitions. [2024-11-23 02:02:01,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6541501976284585 [2024-11-23 02:02:01,494 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 259 flow. Second operand 11 states and 331 transitions. [2024-11-23 02:02:01,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 477 flow [2024-11-23 02:02:01,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 461 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:01,498 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 288 flow [2024-11-23 02:02:01,498 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} [2024-11-23 02:02:01,498 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 28 predicate places. [2024-11-23 02:02:01,499 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 288 flow [2024-11-23 02:02:01,502 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) [2024-11-23 02:02:01,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:01,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:01,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 02:02:01,503 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:01,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2015625369, now seen corresponding path program 1 times [2024-11-23 02:02:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813405644] [2024-11-23 02:02:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:01,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813405644] [2024-11-23 02:02:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813405644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:01,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:01,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:01,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139340765] [2024-11-23 02:02:01,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:01,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:01,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:01,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:01,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:01,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2024-11-23 02:02:01,559 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) [2024-11-23 02:02:01,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:01,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2024-11-23 02:02:01,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:01,625 INFO L124 PetriNetUnfolderBase]: 167/560 cut-off events. [2024-11-23 02:02:01,625 INFO L125 PetriNetUnfolderBase]: For 427/439 co-relation queries the response was YES. [2024-11-23 02:02:01,626 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. [2024-11-23 02:02:01,627 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 20 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-23 02:02:01,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 357 flow [2024-11-23 02:02:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-23 02:02:01,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.782608695652174 [2024-11-23 02:02:01,628 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 288 flow. Second operand 4 states and 144 transitions. [2024-11-23 02:02:01,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 357 flow [2024-11-23 02:02:01,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 302 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-11-23 02:02:01,648 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 259 flow [2024-11-23 02:02:01,649 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} [2024-11-23 02:02:01,649 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-23 02:02:01,649 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 259 flow [2024-11-23 02:02:01,649 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) [2024-11-23 02:02:01,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:01,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:01,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 02:02:01,650 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:01,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1060581310, now seen corresponding path program 1 times [2024-11-23 02:02:01,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:01,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988312034] [2024-11-23 02:02:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988312034] [2024-11-23 02:02:01,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988312034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:01,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:01,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:01,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233088660] [2024-11-23 02:02:01,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:01,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:01,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:01,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:01,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:01,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-11-23 02:02:01,728 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) [2024-11-23 02:02:01,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:01,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-11-23 02:02:01,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:01,838 INFO L124 PetriNetUnfolderBase]: 171/597 cut-off events. [2024-11-23 02:02:01,838 INFO L125 PetriNetUnfolderBase]: For 511/525 co-relation queries the response was YES. [2024-11-23 02:02:01,839 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. [2024-11-23 02:02:01,841 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 36 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2024-11-23 02:02:01,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 393 flow [2024-11-23 02:02:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 02:02:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 02:02:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-11-23 02:02:01,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6385869565217391 [2024-11-23 02:02:01,843 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 259 flow. Second operand 8 states and 235 transitions. [2024-11-23 02:02:01,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 393 flow [2024-11-23 02:02:01,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:01,845 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 268 flow [2024-11-23 02:02:01,845 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} [2024-11-23 02:02:01,846 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 27 predicate places. [2024-11-23 02:02:01,846 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 268 flow [2024-11-23 02:02:01,846 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) [2024-11-23 02:02:01,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:01,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:01,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 02:02:01,846 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:01,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash 874139696, now seen corresponding path program 1 times [2024-11-23 02:02:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:01,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230958224] [2024-11-23 02:02:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:01,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:01,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230958224] [2024-11-23 02:02:01,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230958224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:01,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:01,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:01,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769495043] [2024-11-23 02:02:01,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:01,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:01,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:01,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-11-23 02:02:01,942 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) [2024-11-23 02:02:01,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:01,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-11-23 02:02:01,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:02,036 INFO L124 PetriNetUnfolderBase]: 161/572 cut-off events. [2024-11-23 02:02:02,037 INFO L125 PetriNetUnfolderBase]: For 516/540 co-relation queries the response was YES. [2024-11-23 02:02:02,038 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. [2024-11-23 02:02:02,039 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 36 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2024-11-23 02:02:02,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 402 flow [2024-11-23 02:02:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 02:02:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 02:02:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-11-23 02:02:02,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6385869565217391 [2024-11-23 02:02:02,041 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 268 flow. Second operand 8 states and 235 transitions. [2024-11-23 02:02:02,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 402 flow [2024-11-23 02:02:02,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 368 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-23 02:02:02,043 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 256 flow [2024-11-23 02:02:02,043 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} [2024-11-23 02:02:02,044 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2024-11-23 02:02:02,044 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 256 flow [2024-11-23 02:02:02,044 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) [2024-11-23 02:02:02,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:02,044 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] [2024-11-23 02:02:02,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 02:02:02,045 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:02,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:02,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1908656825, now seen corresponding path program 1 times [2024-11-23 02:02:02,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:02,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968971813] [2024-11-23 02:02:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:02,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:02,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968971813] [2024-11-23 02:02:02,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968971813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:02,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:02,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:02,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016964535] [2024-11-23 02:02:02,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:02,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:02,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:02,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:02,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-11-23 02:02:02,138 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) [2024-11-23 02:02:02,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:02,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-11-23 02:02:02,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:02,243 INFO L124 PetriNetUnfolderBase]: 210/654 cut-off events. [2024-11-23 02:02:02,243 INFO L125 PetriNetUnfolderBase]: For 436/444 co-relation queries the response was YES. [2024-11-23 02:02:02,244 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. [2024-11-23 02:02:02,246 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 25 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-11-23 02:02:02,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 335 flow [2024-11-23 02:02:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:02:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:02:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-11-23 02:02:02,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.677536231884058 [2024-11-23 02:02:02,247 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 256 flow. Second operand 6 states and 187 transitions. [2024-11-23 02:02:02,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 335 flow [2024-11-23 02:02:02,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 309 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 02:02:02,248 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 234 flow [2024-11-23 02:02:02,248 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} [2024-11-23 02:02:02,249 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-23 02:02:02,249 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 234 flow [2024-11-23 02:02:02,249 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) [2024-11-23 02:02:02,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:02,249 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] [2024-11-23 02:02:02,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 02:02:02,249 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:02,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -162457239, now seen corresponding path program 1 times [2024-11-23 02:02:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:02,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143122718] [2024-11-23 02:02:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:02,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:02,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:02,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143122718] [2024-11-23 02:02:02,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143122718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:02,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:02,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:02,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732181325] [2024-11-23 02:02:02,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:02,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:02,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:02,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:02,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:02,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-11-23 02:02:02,322 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) [2024-11-23 02:02:02,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:02,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-11-23 02:02:02,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:02,415 INFO L124 PetriNetUnfolderBase]: 198/630 cut-off events. [2024-11-23 02:02:02,415 INFO L125 PetriNetUnfolderBase]: For 575/583 co-relation queries the response was YES. [2024-11-23 02:02:02,416 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. [2024-11-23 02:02:02,417 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 24 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-11-23 02:02:02,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 311 flow [2024-11-23 02:02:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:02:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:02:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-23 02:02:02,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-23 02:02:02,418 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 234 flow. Second operand 6 states and 186 transitions. [2024-11-23 02:02:02,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 311 flow [2024-11-23 02:02:02,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 02:02:02,420 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 227 flow [2024-11-23 02:02:02,421 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} [2024-11-23 02:02:02,422 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-23 02:02:02,422 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 227 flow [2024-11-23 02:02:02,423 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) [2024-11-23 02:02:02,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:02,423 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] [2024-11-23 02:02:02,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 02:02:02,423 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:02,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash 888307546, now seen corresponding path program 1 times [2024-11-23 02:02:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:02,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643132121] [2024-11-23 02:02:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:02,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:02,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643132121] [2024-11-23 02:02:02,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643132121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:02,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:02,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:02,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931369901] [2024-11-23 02:02:02,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:02,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:02,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:02,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-11-23 02:02:02,489 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) [2024-11-23 02:02:02,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:02,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-11-23 02:02:02,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:02,556 INFO L124 PetriNetUnfolderBase]: 182/597 cut-off events. [2024-11-23 02:02:02,556 INFO L125 PetriNetUnfolderBase]: For 572/580 co-relation queries the response was YES. [2024-11-23 02:02:02,557 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. [2024-11-23 02:02:02,558 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 13 selfloop transitions, 3 changer transitions 15/61 dead transitions. [2024-11-23 02:02:02,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 61 transitions, 289 flow [2024-11-23 02:02:02,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:02:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:02:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-23 02:02:02,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6594202898550725 [2024-11-23 02:02:02,559 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 227 flow. Second operand 6 states and 182 transitions. [2024-11-23 02:02:02,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 61 transitions, 289 flow [2024-11-23 02:02:02,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 277 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 02:02:02,561 INFO L231 Difference]: Finished difference. Result has 72 places, 42 transitions, 160 flow [2024-11-23 02:02:02,561 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} [2024-11-23 02:02:02,561 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2024-11-23 02:02:02,561 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 42 transitions, 160 flow [2024-11-23 02:02:02,561 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) [2024-11-23 02:02:02,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:02,562 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] [2024-11-23 02:02:02,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 02:02:02,562 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 02:02:02,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:02,562 INFO L85 PathProgramCache]: Analyzing trace with hash 958217944, now seen corresponding path program 1 times [2024-11-23 02:02:02,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:02,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531394721] [2024-11-23 02:02:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:02,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:02,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:02,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531394721] [2024-11-23 02:02:02,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531394721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:02,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:02,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:02,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907728597] [2024-11-23 02:02:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:02,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:02,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-11-23 02:02:02,637 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) [2024-11-23 02:02:02,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:02,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-11-23 02:02:02,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:02,674 INFO L124 PetriNetUnfolderBase]: 78/272 cut-off events. [2024-11-23 02:02:02,675 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-11-23 02:02:02,675 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. [2024-11-23 02:02:02,675 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-11-23 02:02:02,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 43 transitions, 184 flow [2024-11-23 02:02:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-23 02:02:02,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-11-23 02:02:02,677 INFO L175 Difference]: Start difference. First operand has 72 places, 42 transitions, 160 flow. Second operand 4 states and 118 transitions. [2024-11-23 02:02:02,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 43 transitions, 184 flow [2024-11-23 02:02:02,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 43 transitions, 170 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-23 02:02:02,678 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-11-23 02:02:02,678 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} [2024-11-23 02:02:02,679 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-11-23 02:02:02,679 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-11-23 02:02:02,680 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) [2024-11-23 02:02:02,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2024-11-23 02:02:02,683 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2024-11-23 02:02:02,683 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-23 02:02:02,683 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-23 02:02:02,683 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-23 02:02:02,683 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-23 02:02:02,683 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-23 02:02:02,683 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-23 02:02:02,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-23 02:02:02,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-23 02:02:02,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 02:02:02,686 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:02,693 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-23 02:02:02,693 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 02:02:02,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:02:02 BasicIcfg [2024-11-23 02:02:02,697 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 02:02:02,697 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 02:02:02,698 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 02:02:02,699 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 02:02:02,699 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:59" (3/4) ... [2024-11-23 02:02:02,700 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-23 02:02:02,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-23 02:02:02,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-23 02:02:02,706 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-23 02:02:02,707 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-23 02:02:02,707 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-23 02:02:02,707 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-23 02:02:02,771 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-23 02:02:02,771 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-23 02:02:02,772 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 02:02:02,772 INFO L158 Benchmark]: Toolchain (without parser) took 3604.89ms. Allocated memory was 138.4MB in the beginning and 251.7MB in the end (delta: 113.2MB). Free memory was 67.7MB in the beginning and 93.6MB in the end (delta: -26.0MB). Peak memory consumption was 89.0MB. Max. memory is 16.1GB. [2024-11-23 02:02:02,772 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 138.4MB. Free memory was 100.3MB in the beginning and 100.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:02:02,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.24ms. Allocated memory is still 138.4MB. Free memory was 67.5MB in the beginning and 54.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-23 02:02:02,772 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.70ms. Allocated memory was 138.4MB in the beginning and 209.7MB in the end (delta: 71.3MB). Free memory was 54.8MB in the beginning and 179.9MB in the end (delta: -125.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-11-23 02:02:02,773 INFO L158 Benchmark]: Boogie Preprocessor took 31.64ms. Allocated memory is still 209.7MB. Free memory was 179.9MB in the beginning and 178.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:02:02,773 INFO L158 Benchmark]: RCFGBuilder took 417.92ms. Allocated memory is still 209.7MB. Free memory was 177.9MB in the beginning and 158.1MB in the end (delta: 19.8MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2024-11-23 02:02:02,773 INFO L158 Benchmark]: TraceAbstraction took 2794.12ms. Allocated memory was 209.7MB in the beginning and 251.7MB in the end (delta: 41.9MB). Free memory was 157.1MB in the beginning and 97.8MB in the end (delta: 59.3MB). Peak memory consumption was 102.2MB. Max. memory is 16.1GB. [2024-11-23 02:02:02,773 INFO L158 Benchmark]: Witness Printer took 74.34ms. Allocated memory is still 251.7MB. Free memory was 97.8MB in the beginning and 93.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-23 02:02:02,774 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 138.4MB. Free memory was 100.3MB in the beginning and 100.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.24ms. Allocated memory is still 138.4MB. Free memory was 67.5MB in the beginning and 54.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.70ms. Allocated memory was 138.4MB in the beginning and 209.7MB in the end (delta: 71.3MB). Free memory was 54.8MB in the beginning and 179.9MB in the end (delta: -125.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.64ms. Allocated memory is still 209.7MB. Free memory was 179.9MB in the beginning and 178.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.92ms. Allocated memory is still 209.7MB. Free memory was 177.9MB in the beginning and 158.1MB in the end (delta: 19.8MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2794.12ms. Allocated memory was 209.7MB in the beginning and 251.7MB in the end (delta: 41.9MB). Free memory was 157.1MB in the beginning and 97.8MB in the end (delta: 59.3MB). Peak memory consumption was 102.2MB. Max. memory is 16.1GB. * Witness Printer took 74.34ms. Allocated memory is still 251.7MB. Free memory was 97.8MB in the beginning and 93.6MB 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: 2.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 899 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 751 mSDsluCounter, 489 SdHoareTripleChecker+Invalid, 0.6s 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, 0.3s 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, 0.6s 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! [2024-11-23 02:02:02,789 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